2026-07-22T11:35:42Z https://nostr.ae j_bertolotti https://nostr.ae/npub1up9tsuaz59knsxg3al42xglqv0q89p4dlpgdwegj95nj8277qy3qr35w5m https://media.mathstodon.xyz/accounts/avatars/109/246/464/168/164/998/original/fd737a375bd6a2dd.jpg https://media.mathstodon.xyz/accounts/avatars/109/246/464/168/164/998/original/fd737a375bd6a2dd.jpg https://nostr.ae/nevent1qqsw2z8utkf94uja82aq4y8n3jhafc7c0thqkx5af9t7zre08xthmwgzyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjy50tecs In reply to <a href='/nevent1qqsgfn8g0xdfun3vh4luj9y2zr5l925gmthhzhkffadpzgkpvu5qdjql42622'>nevent1q…2622</a><br/>_________________________<br/><br/>You can do Parmigiano too, if you know how. You can&#39;t call it with the name for legal reasons, but nothing prevents you to learn how to make it.<br/><br/>My question is more about why. Gondolas make sense in Venice for historical reasons, but make very little sense anywhere else.<br/>People from different places came up with different ways of doing things and different styles, which is why travelling around is interesting. 2026-05-26T08:26:32Z https://nostr.ae/nevent1qqs8mqu98fjk4jhjpgma7hs204addlanqvtzt35dkq8mc7wp64r5dhgzyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjywew3el In reply to <a href='/nevent1qqs9wun92l4d87a2a5zkrjrswt3h8rchtytfy6aqjrl0lf6dcq3tmfg53hh8d'>nevent1q…hh8d</a><br/>_________________________<br/><br/>Why is there a gondola? 🤔 2026-05-26T08:10:07Z https://nostr.ae/nevent1qqsvddwwlf5r425u8jhhxgc3x9x3935r7txuph938et6kum2dnnvwpgzyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjy84m9zq In reply to <a href='/nevent1qqsdq458ndhvmqranrz6mjs8tn3aa978ljfr2fvucgnkkaw0d9mgz3ckayu4f'>nevent1q…yu4f</a><br/>_________________________<br/><br/>Regular reminder to self that all those scary for-loops are just iterated operators 😜 2026-05-06T08:33:49Z https://nostr.ae/nevent1qqsdj84nztkkupct8ewzzfdtl89uztw6w4ymec6hmw6089jtrkm7zcgzyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjyvhq2kg In reply to <a href='/nevent1qqsxwsyuk679wznu0ttd0pn008r7zn5cen2s30f52kj37aa06emu9dqfnuhqm'>nevent1q…uhqm</a><br/>_________________________<br/><br/>Just think about all the implied knowledge in any cookbook. Recipes can be compressed to a page or two only because they assume you already know how to do a lot of the stuff they are talking about. If you have no idea how to cook, no amount of cookbooks will ever help you.<br/><span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/npub1zcg29w5t9t0302g7qqdk609pyjxaqyfdykh86se0nuwp6a87xatqex4xdu" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>Syntaxxor 🏳️‍⚧️ :neobot:</span> (<span class="italic">npub1zcg…4xdu</span>)</a></span> <span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/npub1fdrpydz4n2dpgpy5xhsa6rjg8ytggn82mt0addw6sf93272nhhnqsjlvhs" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>Cory Doctorow</span> (<span class="italic">npub1fdr…lvhs</span>)</a></span> 2026-04-09T10:55:24Z https://nostr.ae/nevent1qqsteucv80lznkg3qm2elsld3cvqgu83ahjr8qa20dtm6jvchlpa86czyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjy7kvn6x They convinced me to make a LinkedIn account.<br/>Now I feel a bit dirty. 2026-03-26T13:18:37Z https://nostr.ae/nevent1qqsydjcse24fxas4cfmapt82dm7449l7ql0v62cq56p2kj5h2pdvgvqzyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjyasutq8 In reply to <a href='/nevent1qqs9x796pxgyklnsdu0lyxwjz6wrxfrk6v6z7khdqfnq2s6hr9fk8dsy6ahxj'>nevent1q…ahxj</a><br/>_________________________<br/><br/>I hadn&#39;t read anything from SCP in years. Probably I should start again 🙂 2026-02-28T09:01:51Z https://nostr.ae/nevent1qqsp78hx337rwcpxs634pk785gjsr3hwmw83tn9d8k9666ukwsnvm2qzyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjyc7atsa In reply to <a href='/nevent1qqsvqvnhj7h3gdyukz6z0vwrdd6yfw70rafwhe5ygremad7qzr0gr4gv0lh83'>nevent1q…lh83</a><br/>_________________________<br/><br/>Do they still produce/sell CRTs? 2026-02-25T09:41:42Z https://nostr.ae/nevent1qqsfejc04natwgxm74e4w4mdwsm4ap0zaf2kzn4hha97fzaf26ts4aczyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjyl2fgep In reply to <a href='/nevent1qqsgjqe03muf4usxqnxkuptqnfav2apl5yna5lhu9dleeunjghj936gjcsmtz'>nevent1q…smtz</a><br/>_________________________<br/><br/>I feel for the developers, but making a free-to-play life service hero shooter is equivalent to jumping in a tank full of sharks shouting &#34;I&#39;m tasty!&#34; 2026-02-13T20:13:52Z https://nostr.ae/nevent1qqswlnwvah5kg094jw29kewgv0r2k2nkgykna37u0nhadzkk0wc9wnqzyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjye3jy28 Random reminder that, despite what you read in &#34;Lord of the Flies&#34;, when a real group of teenagers happened to get stranded on a inhabited island, they didn&#39;t start killing each other. On the contrary they worked together, built a commune, and survived in good health for 15 months (when they were saved by a passing ship).<br/><br/>Most people are good people. Even teenagers 😉<br/><br/><a href="https://en.wikipedia.org/wiki/Tongan_castaways">https://en.wikipedia.org/wiki/Tongan_castaways</a> 2026-02-13T10:12:20Z https://nostr.ae/nevent1qqsdzz5nx6twulyvt3ssc3sqzmaqlpjm6q0sc70elq3phqq2ldsq0ugzyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjysdn5m0 In reply to <a href='/nevent1qqsvw2shny5gat2qs9mdkndjh8luqa7kmjznqdd659m0kxtsadmenugp6pdms'>nevent1q…pdms</a><br/>_________________________<br/><br/>Counterpoint: noting in the game is photorealistic, so you might want to make the mountains less &#34;realistic&#34; to better fit with the general vibe. 2026-02-02T16:15:24Z https://nostr.ae/nevent1qqst5wyj0ywrjacecd88nwmqa3z8uashdrphc592j6keld6ul8hcl0czyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjyfkrtj3 In reply to <a href='/nevent1qqsylkgunvlyr5fedr4yfv5keacy77s76205mpzlmcfycld7mxt5wcs3whg93'>nevent1q…hg93</a><br/>_________________________<br/><br/>De gustibus non est disputandum 🙂 <br/><br/> <span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/npub1dxfpptm696ejdjun36sl8tpac20hs6z4jv92qp4jp5w7666mmq0ss2v5xz" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>RobJLow</span> (<span class="italic">npub1dxf…v5xz</span>)</a></span> 2026-01-07T15:27:45Z https://nostr.ae/nevent1qqsf7g840c5mpc57d7gkfmx964vqm3gpe0rgs65evmlyp035tazueuszyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjydaw9wx In reply to <a href='/nevent1qqsxdr4wnyhvemls9l0lddv6c4cx5vg5v2a0vjmugu6gy22lwve5qecugw2mq'>nevent1q…w2mq</a><br/>_________________________<br/><br/>I know I am part of a minority, but I like to derive Lagrangian mechanics from newton&#39;s laws instead of postulating that the action is minimised. Which means that to me all Newton&#39;s laws are built into the fabric of Lagrangian mechanics by construction 😉 <br/><span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/npub1nf4p4rh06z6n6lsvje4txk7eqs23y3hs8vd7nraq6tgwady5qvsqy3nqe4" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>John Carlos Baez</span> (<span class="italic">npub1nf4…nqe4</span>)</a></span> 2026-01-07T13:47:28Z https://nostr.ae/nevent1qqsd3xrmqnjz3quq5r3q9mtwz8f9y5htqjzz3htc4c08f39syv9mvvczyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjy9ptnft In reply to <a href='/nevent1qqsfp6v208paw6chh0hx0zwsyszsmqequwp5j7gt8hhj828vt7uneuqa3q35j'>nevent1q…q35j</a><br/>_________________________<br/><br/>Exactly! And Purgatory has the same shape, but reversed to form a mountain. 2026-01-02T14:37:07Z https://nostr.ae/nevent1qqsqu6r65e7s266g649vvlxf7nqlsx3507s7cp4sxuy0r7d89ck0xtczyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjyt4869r In reply to <a href='/nevent1qqsg6y9l7gkuypzk3kry05w24kt6ujw4598625aygnacz9zznpu34ec4sspva'>nevent1q…spva</a><br/>_________________________<br/><br/>Funnily, hell is not described as spheres, but as concentric rings (&#34;cerchi&#34;), with the smallest one being also the deepest. 2026-01-02T14:30:56Z https://nostr.ae/nevent1qqs8pnt3vmxacsllv98phdvklm2qaeete2k869ru0kh6pn3f49h2htgzyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjy8xrqnn In reply to <a href='/nevent1qqsfm2d8v9lke0lzdlgfp7esuf960td4t4e8yultn92xkd8md7wt89qapcvv6'>nevent1q…cvv6</a><br/>_________________________<br/><br/>Reminds me a lot of how Wikipedia was discussed in the media 20 years ago.<br/><span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/npub1yq0pke6fp87vzyhetqewq0jxvnqsv0sal4atza5l7qkkum8qxjfq0rhfrz" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>Deb Nam-Krane</span> (<span class="italic">npub1yq0…hfrz</span>)</a></span> 2025-12-26T19:45:26Z https://nostr.ae/nevent1qqszq6qxe2ltunhnye7weuj5a0ykv9h7c3g7dra4skklzt73r7y0wgszyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjymrtzms In reply to <a href='/nevent1qqszh209unqfuvn3e9mw5dphfztswe3dwezd7s2nc44fjksfy9syv0srkemxs'>nevent1q…emxs</a><br/>_________________________<br/><br/>There are infinite cool things to learn and a finite time to learn them. You have to prioritise 😉 2025-12-26T18:36:04Z https://nostr.ae/nevent1qqs8v8ts0tnaxet3fckcxe6sp2hvmvvqpnkwrq5cupsnyply3ufy4wszyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjyq0j3ux In reply to <a href='/nevent1qqsv94j0upw0e7aye2kcx3lceaa39tak449d5cj4mrpr9t6yz204l8szl88yq'>nevent1q…88yq</a><br/>_________________________<br/><br/>I didn&#39;t mean to offend you. If I did, I apologize.<br/>I understand this stuff on an intellectual level, but I never devoted nearly enough time to music to make this stuff less confusing at an intuitive level. There is just too much historical baggage. 2025-12-26T12:31:18Z https://nostr.ae/nevent1qqspnd638g4spwytsx3ex3vmm9txfjt0pmjykzdkns9vjmqtkhmthuczyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjyq3vd30 In reply to <a href='/nevent1qqs8wz8wzzlqqpldyuc2ctp69j8swrm6uauqfcl4pc6uazgu660hvxgwr3y72'>nevent1q…3y72</a><br/>_________________________<br/><br/>The very fact that people decided to divide notes into &#34;white&#34; and &#34;black&#34; instead of simply say that they are ultimately the same thing is also something that will confuse me forever 🤣 2025-12-26T12:16:53Z https://nostr.ae/nevent1qqst8z5ak4q7su6dnf6dghrqctkl3fcgkmnlav2g8hxu3rj4wh87e7szyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjyc4z4rf RE: <a href="https://mathstodon.xyz/@johncarlosbaez/115779744672820818">https://mathstodon.xyz/@johncarlosbaez/115779744672820818</a><br/><br/>The fact that going up 7 notes is called a fifth will never cease to confuse the hell out of me.<br/>#IAmBadAtMusic<blockquote class="border-l-05rem border-l-strongpink border-solid"><div class="-ml-4 bg-gradient-to-r from-gray-100 dark:from-zinc-800 to-transparent mr-0 mt-0 mb-4 pl-4 pr-2 py-2">quoting <br/><span itemprop="mentions" itemscope itemtype="https://schema.org/Article"><a itemprop="url" href="/note1vm3mvre5lj67m05x89jm46qd6gu8l53wnvtfvv4uxu0wdxymnyfq6l7hh3" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1">note1vm3…7hh3</a></span><br/> </div> Merry Xmas! My dream of the internet includes a lot of people giving each other gifts. Mastodon comes close to that. I'd like to thank everyone on Mastodon for all the you've gifts you've given each other over the year. Here are some presents in return.... <br/><br/>Yesterday I talked about 12-tone equal temperament: the tuning system where we chop the octave into 12 equal parts. <br/><br/>This has been the most popular tuning system since maybe 1810, or definitely by 1850. But it's mathematically the most boring of the tuning systems that have dominated Western music since the Middle Ages. Now let's go back much earlier, to Pythagorean tuning.<br/><br/>When you chop the octave into 12 equal parts, the frequency ratios of all your notes are irrational numbers... *except* when you go up or down some number of octaves. <br/><br/>The Pythagoreans disliked irrational numbers. People even say they drowned Hippasus at sea after he proved that the square root of 2 is irrational! That's just a myth, but it illustrates how people connected Pythagoras to a love of rational numbers. In Pythagorean tuning, people wanted a lot of frequency ratios of 3/2.<br/><br/>In equal temperament, where we chop the octave into 12 equal parts, when we start at any note and go up 7 of these parts (a so-called "fifth"), we reach a note that vibrates about 1.4981 times as fast. That's close enough to 3/2 for most ears. But it's not the Pythagorean ideal!<br/><br/>As we'll see, seeking the Pythagorean ideal causes trouble. It will unleash the devil in music.<br/><br/>(15/n)<br/> <img src="https://media.mathstodon.xyz/media_attachments/files/115/779/726/117/449/396/original/f58d00861a314be5.jpg"> <br/> </blockquote> 2025-12-26T12:02:31Z https://nostr.ae/nevent1qqs9gulm7yjhsrx7qlnkdckk4c4yayx5vqlmw4l8hh0v7367s4ckvnqzyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjygk9zmz In reply to <a href='/nevent1qqs8fqtwu9fvh80edmnq94qlue9kgzay4n77gru9fl5zya2y9jaxecctpd9w8'>nevent1q…d9w8</a><br/>_________________________<br/><br/>After not touching it for &gt;1y, I used this occasion to deactivate it (it will take 30 days before it is deleted). 2025-12-18T11:36:55Z https://nostr.ae/nevent1qqs2sy5ds77vqfnar0txrkt4mu3ft3ad8v3due4hgq3nukkudakx4aqzyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjy7va9y5 In reply to <a href='/nevent1qqsqn0skn3y3hgk4yrjd43fnvmm8klxku2ht8gj32lq4yn2dj3l4rdg838nwc'>nevent1q…8nwc</a><br/>_________________________<br/><br/><a href="https://www.unicodeit.net/">https://www.unicodeit.net/</a> has saved me so many times.<br/><br/> <span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/npub1whrara5n38jvwcnkhwz346nl2sn969zu0guk0pvfeltzecn2axesdzqc2t" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>julesh</span> (<span class="italic">npub1whr…qc2t</span>)</a></span> 2025-12-15T12:44:32Z https://nostr.ae/nevent1qqsy2fn2fetc405qpe67c6mfsdd2nfsknp465gsj0lcwzg4sw8c2xeqzyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjyz8re8d RE: <a href="https://mas.to/@kityates/115695305011695598">https://mas.to/@kityates/115695305011695598</a><br/><br/>My new business plan:<br/>* Code a thinly disguised random number generator.<br/>* Name it something like &#34;The Eye of Sauron&#34;<br/>* Advertise it as the most cutting edge quantum AI technology to scrape someone&#39;s social media history and extract their political inclinations.<br/>* Sell it to the US government for a huge sum.<br/><br/>(Sometimes I wish I was sociopathic.)<blockquote class="border-l-05rem border-l-strongpink border-solid"><div class="-ml-4 bg-gradient-to-r from-gray-100 dark:from-zinc-800 to-transparent mr-0 mt-0 mb-4 pl-4 pr-2 py-2">quoting <br/><span itemprop="mentions" itemscope itemtype="https://schema.org/Article"><a itemprop="url" href="/note1mk84qtxxwtapq564y2u4y25evw9d7tq5jk5mtrkmn7czsfxh8fmqgxkjte" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1">note1mk8…kjte</a></span><br/> </div> It’s sad to think, but maybe I’ve gone to the US for the last time.<br/><a href="https://www.bbc.co.uk/news/articles/c1dz0g2ykpeo">https://www.bbc.co.uk/news/articles/c1dz0g2ykpeo</a> </blockquote> 2025-12-10T15:00:29Z https://nostr.ae/nevent1qqstqlmwx2n2m9ympn67dr3wxzp7ajkuhercqt9ru09tfuvhlw7pckqzyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjyqduel8 Stuff like this is why I hate generative AI with a passion.<br/><a href="https://www.theguardian.com/technology/ng-interactive/2025/dec/02/jared-kaplan-artificial-intelligence-train-itself">https://www.theguardian.com/technology/ng-interactive/2025/dec/02/jared-kaplan-artificial-intelligence-train-itself</a><br/>We know for a fact that feeding a generative AI model with the output of generative AI lead to the model collapse and nothing more ( <a href="https://www.nature.com/articles/s41586-024-07566-y">https://www.nature.com/articles/s41586-024-07566-y</a> ), but the claim is not just factually incorrect, it is maliciously incorrect. Because they know it is false, but they will pretend otherwise to try to keep the speculative bubble afloat and the money flowing in.<br/><br/>And the whole article is nothing else but the &#34;journalist&#34; repeating the claims of someone with a very clear vested interest without ever fact-checking or even questioning them.<br/><br/>It is rage-inducing.<br/><br/>#AI #GenerativeAI #Anthropic #rant 2025-12-02T14:40:17Z https://nostr.ae/nevent1qqs87uwj39365a3svr94eedu3ljq8q7p783fawlsflfpnu74dkjr3kczyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjydw2krc In reply to <a href='/nevent1qqsyrw4vhl34kc0h9nadzwgrpwx6nplyantshuu5tf0x9zednzzxj6cel6jv9'>nevent1q…6jv9</a><br/>_________________________<br/><br/>If I split it into 3 parts, can I then recombine them to obtain 2 spheres identical to the original? 2025-11-27T07:57:27Z https://nostr.ae/nevent1qqsw0r8e55ywpa7u07lxzuhtmrwdvmpltjmxhkxr0geuwy6cz82xq6czyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjy9y0uyg In reply to <a href='/nevent1qqsz0vmvqzl7kvnpdhgfs2fsfcpsfl7069p26yeekrfe7r4nta4flfggnnd5u'>nevent1q…nd5u</a><br/>_________________________<br/><br/>Either would be correct, and which one is preferred depends on the particular teacher (I expect most would want a student to write 185/43, but I haven&#39;t been in primary school for a long time).<br/><br/> <span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/npub1s4hqf67dr73p05v6nmff3c0yws920attdwjzyqjglyvcprzyu5rsp2qs84" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>Colin the Mathmo</span> (<span class="italic">npub1s4h…qs84</span>)</a></span> 2025-11-10T11:53:07Z https://nostr.ae/nevent1qqsv5cpjsjy6fzpcac4v70g2w3aexkx7hn4lhqukgkq952j4wzuzw5gzyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjyvdh850 In reply to <a href='/nevent1qqsdphc2jphwr4mhp2c7hf8j3rwt6uaw7xl58wmpk5yrfge0tvd7rdshht3dl'>nevent1q…t3dl</a><br/>_________________________<br/><br/>As the Italian native allow me to fight back: &#34;two and a half&#34; translates to 2+½=2.5. The plus there is very explicit.<br/>The Fellini movie is universally called &#34;Otto e mezzo&#34; which translates to 8+½=8.5 and the way it is written in the movie posters is a complete anomaly in Italian (and likely done for artistic reasons).<br/>Mixed numbers DO NOT exist in Italian. They are not taught in school, and they keep confusing me every time I see one.<br/><br/>Then obviously we are not stupid, and given some context we understand what they mean, and I am sure a few people have used them here and there because they felt it makes them look cosmopolitan.<br/><br/><span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/npub1s4hqf67dr73p05v6nmff3c0yws920attdwjzyqjglyvcprzyu5rsp2qs84" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>Colin the Mathmo</span> (<span class="italic">npub1s4h…qs84</span>)</a></span> 2025-11-10T11:26:02Z https://nostr.ae/nevent1qqsf94d9f7fnkrp2ywmk7nucc93jy6a3qd5v3utuys3e6ujhf6cqjlqzyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjy0v3qp5 In reply to <a href='/nevent1qqs9aczre5u36l85p034gmrumqd2js6xhz2lw2rph6jnzuu9yh8e7acuanvq4'>nevent1q…nvq4</a><br/>_________________________<br/><br/>Minor correction: mixed numbers do not exist in MOST countries.<br/>They are also an abomination that should be burnt with fire. 2025-11-10T10:53:53Z https://nostr.ae/nevent1qqsye6usry6euytyagrlp74eye3wn4ldsys0ctpq92ma05wn0ap60rgzyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjykvjnqq In reply to <a href='/nevent1qqsqsrevwakyldugsxmyjnplz6gv278laa6me5thzyguphye3tec5msnvkx2p'>nevent1q…kx2p</a><br/>_________________________<br/><br/>I wonder if Meitner ever crossed paths with Noether. Both Jews women in Germany struggling to have their genius recognized by a close-minded University system. Both having to flee Germany. Roughly the same age.<br/><br/>They were interested in very different problems, but I can only imagine what they could have achieved if they ever worked together! 2025-11-04T10:35:16Z https://nostr.ae/nevent1qqsp3mz8k02997y2jdya4stga674jsjlzk37zg5j5njlwgm3m0t6ufqzyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjy5wml87 There is a girl who started brining her knitting to my class, and now I wish I could spend a few lectures on knot theory and (some of) the beautiful Maths behind knitting 🧶 2025-10-18T07:40:14Z https://nostr.ae/nevent1qqsvyga7z42yehqr5lmmz4856nlygxesprdcz8mcn8jycn3zzulpd0czyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjyf02avv #PhysicsFactlet <br/>Sometimes you need to forgo the intuitive way to define stuff for the sake of actually being able to do anything useful with those definitions.<br/>An example of this I always found funny is in knot theory, where a simple loop is considered to be a knot, while anything where the two extremes are dangling are not, including the common overhand knot.<br/>This looks weird the first time you see it, but there is a very good reason to go with such a definition: you want to study what you can and can&#39;t do by manipulating the knot, and if you have the two extremes dangling, you can always untie any knot, making them all equivalent to a piece of string. In order to be able to say anything interesting about them you need to remove this trivial option, and thus accept the simple loop as a knot.<br/>#knots<br/> <img src="https://media.mathstodon.xyz/media_attachments/files/115/366/428/534/174/821/original/0c89383034a0cc2c.png"> <br/> 2025-10-13T10:49:52Z https://nostr.ae/nevent1qqsfqru43k2v67all2hplwqj42jp7g5lf9agf45y9kwpxz5r0uwrv2gzyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjya9atsc In reply to <a href='/nevent1qqsvq9e6zvrxmrywrl9z22t77saep7sqlz0z6x0emgsf83rvuydctkgd7wu3g'>nevent1q…wu3g</a><br/>_________________________<br/><br/>A &#34;Clifford algebra for dummies&#34; would be nice.<br/>(I am the dummy.) 2025-10-07T16:50:50Z https://nostr.ae/nevent1qqsfpkqknrzgzrd8thl2v8ff7q2cxz6vtsdj2zae656kaa2j6ktwycczyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjyck3p2s In reply to <a href='/nevent1qqsw7vu8y969pw4u02rzhhglnfyxhfvs433peuchtm4hqc2fex0sfxq5p4dgr'>nevent1q…4dgr</a><br/>_________________________<br/><br/>The number of markers we can put on a ruler is limited by the fact that atoms have a finite size, so I guess in your higher-cardinality universe atoms would have a hard time existing, which would prevent us from existing and thus from doing any logic at all 🙃 <br/><span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/npub1p7uy38gmmfgap7wr9hqq3njg0zc5p4s5vykthq7k9sezfp2w220s3fkglz" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>ma𝕏pool</span> (<span class="italic">npub1p7u…kglz</span>)</a></span> <span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/npub1d60hhaertjrlmhefe54s00hfyga38wangrqthcu3zdnnnfm3myase5mhwm" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>theHigherGeometer</span> (<span class="italic">npub1d60…mhwm</span>)</a></span> 2025-09-22T15:41:26Z https://nostr.ae/nevent1qqstzntnlu70fcm9d7l5c77k6233mam8eqcmc0848d52d993hv2hhvczyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjy274rq6 In reply to <a href='/nevent1qqsr3eka5fyyxe6ag3eul224v23z3clpg9sdl893c3wlc9g05n5y5wgqel0g0'>nevent1q…l0g0</a><br/>_________________________<br/><br/>I used it for a while. It is a good client for mastodon (now I use the vanilla browser version of mastodon)<br/>That said, not all mastodon servers have the latex plugin installed.<br/>[@victor_tokarev](<a href="https://twiukraine.com/@victor_tokarev">https://twiukraine.com/@victor_tokarev</a> ) 2025-09-11T09:21:19Z https://nostr.ae/nevent1qqs207j4wc0nfuyu67e6vm4nz8h343y3lhpkcygedz8cf8p6q2v8qpszyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjy35ygjp In reply to <a href='/nevent1qqsyp6rgu09zntztccf2pt9rvkz2wxhc2yktzamms4fk3yulrqdkuqsf6rtse'>nevent1q…rtse</a><br/>_________________________<br/><br/>I vote for &#34;This holds everywhere, except in a set of measure zero, which happens to contain every single point where this result would be interesting and/or useful&#34; 🙃 2025-09-10T12:58:45Z https://nostr.ae/nevent1qqszvk7crn3d0c7q6082vrwh2d49hr9hs6xkf09zfygxv9f4r47e95czyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjyfaav0s Pet peeve number 10²³: People who say Japanese is difficult because it has 3 different sets of characters.<br/><br/>It might surprise some, but every language using the Latin alphabet has 4 sets of characters: lowercase block, uppercase block, lowercase cursive, uppercase cursive.<br/><br/>(To be clear: Japanese IS difficult. But not for that reason!) 2025-08-22T15:09:06Z https://nostr.ae/nevent1qqsyvkmfe7t2prkgjn83avz3af8xzcheus62uasnj44y837u283um8czyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjy06qma9 Incoming conference!<br/><br/><span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/npub1xwn6k96e3742rlkcfqpn4tkel2tm53k74df8ps7yeq69346kte0q5gdqus" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>Sylvain Gigan</span> (<span class="italic">npub1xwn…dqus</span>)</a></span> put together an amazing list of people. Then made a mistake and added my name too 😁 <br/><a href="https://www.grc.org/image-science-conference/2026/">https://www.grc.org/image-science-conference/2026/</a><br/><br/>If you are interested in #Optics and #Imaging, you probably want to come. 2025-08-18T13:30:24Z https://nostr.ae/nevent1qqsx4m97anj9hvqs0ztzdnwrmpfutfxjmkrxls9gf6v08tqppckaruczyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjyddg2g6 &#34;This is why AI users often sound like they&#39;re using totally different technologies. Workers who get to decide whether and how to incorporate AI into their jobs are doubtless finding lots of utility and delight from the new tool. These workers are &#34;centaurs&#34; – people assisted by machines.<br/><br/>The workers who describe their on-the-job AI as a hellish monstrosity are being ordered to use AI, in workplaces where mass firings have terrified the survivors, who are told they must use the AI to make up for their jobless former colleagues. They are reverse-centaurs: machines assisted by human workers.&#34;<br/>( <span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/npub1fdrpydz4n2dpgpy5xhsa6rjg8ytggn82mt0addw6sf93272nhhnqsjlvhs" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>Cory Doctorow</span> (<span class="italic">npub1fdr…lvhs</span>)</a></span> )<br/><br/><a href="https://pluralistic.net/2025/08/13/then-they-came-for-me/">https://pluralistic.net/2025/08/13/then-they-came-for-me/</a> 2025-08-14T09:00:35Z https://nostr.ae/nevent1qqs08v7r8sd6nh87s46sn7q2w2afwpzp90646883gfx5r439amcwyhqzyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjyfrn0fu In reply to <a href='/nevent1qqs2duludelq6eva683gz82xjvvqk0ezz4286fr5qj3lj4jzrzgtklq6wc8mz'>nevent1q…c8mz</a><br/>_________________________<br/><br/>The lesson from Italian history is not one with a happy ending. When Berlusconi collapsed under the weight of his age and scandals, things didn&#39;t get &#34;back to normal&#34;. What happened was that the bar of &#34;normality&#34; have been moved forever, the opposition was essentially cancelled, and the power vacuum was filled by populists. 2025-07-18T14:27:41Z https://nostr.ae/nevent1qqsx3g57ghtetqu0a639es72we9f9c2phhqpw3ph8qpn8tq5hyt7xgszyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjy99euq4 It is interesting/horrifying how Trump seems to be following exactly Berlusconi parabola (including a scandal involving underage girls and having people he didn&#39;t like fired from TV), but cranked up to eleven. 2025-07-18T14:22:56Z https://nostr.ae/nevent1qqs2fjvdyjh8wqjvta6tsyuxtjeup4yewk8d4rln7szqaezvjzd6nqszyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjyl6z437 In reply to <a href='/nevent1qqsr4a4fzmp0vxphq0l4s4qv0fdwlwfmyetd6gfgv6j9djfgqhtkp5cwdr2ml'>nevent1q…r2ml</a><br/>_________________________<br/><br/>#PhysicsFactlet <br/>An improvement over the bisection method is the so-called &#34;false position&#34; method, where instead of dividing the bracket region in two, you cut at the point where the line through the two bracket extremes crosses zero.<br/><br/>#Physics #Computing #Algorithm<br/><video controls width="100%" class="max-h-[90vh] bg-neutral-300 dark:bg-zinc-700"><source src="https://media.mathstodon.xyz/media_attachments/files/114/852/544/088/999/242/original/6963e9fe05b290ad.mp4"></video><br/> 2025-07-14T16:36:10Z https://nostr.ae/nevent1qqsr4a4fzmp0vxphq0l4s4qv0fdwlwfmyetd6gfgv6j9djfgqhtkp5czyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjyzu2z7a #PhysicsFactlet <br/>Finding the roots of a function is a very common problem in computational Physics, and the bisection method is a simple and effective (albeit far from optimal) way to do that.<br/>The idea is that you start by &#34;bracketing&#34; your root between a value of x where the function is negative and one where it is positive. You then take the midpoint between them, check if your function there is positive or negative and update the bracket.<br/><br/>#Physics #Computing #Algorithm<br/><video controls width="100%" class="max-h-[90vh] bg-neutral-300 dark:bg-zinc-700"><source src="https://media.mathstodon.xyz/media_attachments/files/114/834/690/273/158/644/original/184ee8de52e881a8.mp4"></video><br/> 2025-07-11T12:57:26Z https://nostr.ae/nevent1qqsxfgd2zfr3jc9s9kazfv4paghxee4c9yxymh889kytedkjxynlf2szyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjyhppxw3 In reply to <a href='/nevent1qqs0x0d2n3vku07h72qc9ewsnttju3g0td8f6ll4g2rz9x63vrfzq8ggggj0a'>nevent1q…gj0a</a><br/>_________________________<br/><br/>The humanities are a foreign country to me 🙃 <br/><span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/npub1gt03edzjnnr03gp2nng83g8wftv8s836f2mls5334e4kkaspr5tq3ckeck" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>Heidi Seibold</span> (<span class="italic">npub1gt0…keck</span>)</a></span> 2025-07-10T08:43:53Z https://nostr.ae/nevent1qqsxnlwkpvkjx2crfshzww8z9zmhult55sgj4qudv0h9xx43fyt2seczyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjysz6xmz In reply to <a href='/nevent1qqs9vhwk2sc49rdtcc2l7u9kngeh0pvur355j8rd4t8hexyvq2kp0rg0v9gzq'>nevent1q…9gzq</a><br/>_________________________<br/><br/>Preprints are also a way to make your research accessible to academics in poorer countries (and/or people doing research but without an academic affiliation, e.g. in industry) without having to pay the enormous open-access fees many journals have.<br/><br/><span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/npub1gt03edzjnnr03gp2nng83g8wftv8s836f2mls5334e4kkaspr5tq3ckeck" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>Heidi Seibold</span> (<span class="italic">npub1gt0…keck</span>)</a></span> A good starting point when looking at preprint archives in one&#39;s field is <a href="https://en.wikipedia.org/wiki/List_of_preprint_repositories">https://en.wikipedia.org/wiki/List_of_preprint_repositories</a> 2025-07-10T08:27:44Z https://nostr.ae/nevent1qqsx7h67cgqvm5a87j3tx333huejhg3uvy32za2s58tp9m6xhkhln2gzyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjya5nj6y In reply to <a href='/nevent1qqs9cu6nxt0m9rfae62rq2eqkjrnepqarx6pdgl5u6f6a5f5mpdfwlsg7xr2r'>nevent1q…xr2r</a><br/>_________________________<br/><br/>These are all great, but they all aim to simulate the optical system. My idea was something simple that would allow you to make 3d diagram of your setup (e.g. to use as a figure in a paper) without all the overheads of a real simulation. 2025-07-05T12:26:59Z https://nostr.ae/nevent1qqsrcrtedmqf9aq8pcfsnv3q2f0nhr59pesk2gvueny69mqk93r3wkczyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjy6psfxr Hobby project I started, never finished, but I would like one day to pick up again:<br/>* A statistics and probability manual that uses #DnD rules as both motivations and examples.<br/>*A simple managerial videogame where you are a newly appointed academic and need to run your group, juggle teaching, admin etc<br/>* A #GURPS-inspired ttrpg set in a world where magic is so common that everybody can use it.<br/>* An app that allows you to make 3D diagrams for experimental setups just by drag and drop (without having to learn all the intricacies if Blender&amp;co).<br/>* An app that shows you the probability distribution to get a given result when rolling dice (e.g. roll 4d12 and keep the lowest 2). 2025-07-05T09:11:11Z https://nostr.ae/nevent1qqsdfns4u4ffyuus7q7naxqckd6kff2su2eadjwkh96p4q5dq45ea4czyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjymkyyuc In reply to <a href='/nevent1qqspshy3n4chylq3y7pyhcnp6h2jna4gxmpv3k56tmrqm9yl022lkrqfehkr9'>nevent1q…hkr9</a><br/>_________________________<br/><br/>Look mom, I got a semi-viral post on Mastodon!<br/><br/>I don&#39;t have a soundcloud (or whatever people who regularly go viral tend to advertise), so just be nice to each other! 2025-06-06T13:39:30Z https://nostr.ae/nevent1qqspshy3n4chylq3y7pyhcnp6h2jna4gxmpv3k56tmrqm9yl022lkrqzyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjymap879 &#34;AI companies claim their tools couldn&#39;t exist without training on copyrighted material. It turns out, they could — it&#39;s just really hard. To prove it, AI researchers trained a new model that&#39;s less powerful but much more ethical. That&#39;s because the LLM&#39;s dataset uses only public domain and openly licensed material.&#34;<br/><br/>tl;dr: If you use public domain data (i.e. you don&#39;t steal from authors and creators) you can train a LLM just as good as what was cutting edge a couple of years ago. What makes it difficult is curating the data, but once the data has been curated once, in principle everyone can use it without having to go through the painful part.<br/>So the whole &#34;we have to violate copyright and steal intellectual property&#34; is (as everybody already knew) total BS.<br/><br/><a href="https://www.engadget.com/ai/it-turns-out-you-can-train-ai-models-without-copyrighted-material-174016619.html?src=rss">https://www.engadget.com/ai/it-turns-out-you-can-train-ai-models-without-copyrighted-material-174016619.html?src=rss</a> 2025-06-06T08:50:06Z https://nostr.ae/nevent1qqsggsc4lw8lhazwcdlq9q2h0utzqsessulru5u02s4hfmtn8pfaj6szyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjykxwr0g In reply to <a href='/nevent1qqsq36hf59m98hvt34j6004knn2pq3myved466sxau2huctjuefkl3slxte7s'>nevent1q…te7s</a><br/>_________________________<br/><br/>Addendum: if you are writing something longer than 2-3 pages and you have more than a couple of acronyms defined in your text, seriously consider a table of symbols and acronyms somewhere so that people don&#39;t have to hunt where did you defined it to understand what you are talking about. 🙂 <br/><span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/npub1qhqrprnl0f34velwn3hyhhssh37dyx9tmh0vqpspe45m9ftcme7qhevwcf" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>Steve Dodge</span> (<span class="italic">npub1qhq…vwcf</span>)</a></span> 2025-06-04T08:45:03Z https://nostr.ae/nevent1qqsgvj9kvmwkrxsf0s50pat0v947yjqn8xynjuz22mgy6xrz3wsrhlqzyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjyg0pdjl Acronyms are the worst form of jargon, as their meaning can be completely different in different fields.<br/>(I just saw a post talking about FLT as in &#34;Fermat Last Theorem&#34; where my brain keeps reading it as &#34;Faster than Light Travel&#34;, and this is one of the most benign cases.) 2025-06-03T12:31:33Z https://nostr.ae/nevent1qqs83gsz8m9uf5pw55xe9kn6efrmhwcj2vxv68yrk6ruag0t4cenjgszyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjy8zqudm #PhysicsJournalClub <br/>&#34;Model-free estimation of the Cramér–Rao bound for deep learning microscopy in complex media&#34;<br/>by I. Starshynov et al.<br/><br/>Nat. Photon. (2025)<br/><a href="https://doi.org/10.1038/s41566-025-01657-6">https://doi.org/10.1038/s41566-025-01657-6</a><br/><br/>As everybody who ever tried to orient themselves while immersed in thick fog knows, scattering scrambles information. The question &#34;how much information is still there?&#34; is not particularly interesting as the answer is &#34;essentially all of it&#34;, as elastic scattering can&#39;t destroy information. A much more interesting question is &#34;how much information can we retrieve?&#34; In order to even try to give an answer we need to be a bit more specific, so the authors placed a small reflective surface behind a scattering layer and asked how much information about its transverse position could be retrieved. This is a well-posed question, and the answer takes the form of a &#34;Cramér–Rao bound&#34; (<a href="https://en.wikipedia.org/wiki/Cram%C3%A9r%E2%80%93Rao_bound">https://en.wikipedia.org/wiki/Cram%C3%A9r%E2%80%93Rao_bound</a>).<br/>After estimating this upper bound, the authors investigate how well a trained neural network can do at this task, and show that a specifically built convolutional neural network can almost reach the theoretical bound.<br/><br/>[Conflict of interest: Ilya Starshynov (the first author) did his PhD in my group.]<br/><br/>#Physics #InformationTheory #Optics #MachineLearning 2025-06-02T15:16:17Z https://nostr.ae/nevent1qqsgqckqxxm879xcxly078lcjyfug77l8d7f99ca0tydlk3aqnj0zcczyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjyn3q2sc #PhysicsFactlet <br/>A Shack-Hartmann sensor is made my an array of small lenses and a camera. If the light hitting the lenses is collimated, we will get a number of equispaced foci on the camera. But if the light is not collimated, the position of the foci will change in a predictable way, so we can reconstruct where the ray were coming from.<br/>#Optics #Physics<br/><video controls width="100%" class="max-h-[90vh] bg-neutral-300 dark:bg-zinc-700"><source src="https://media.mathstodon.xyz/media_attachments/files/114/557/948/986/672/808/original/f79c4870825557b5.mp4"></video><br/> 2025-05-23T15:54:49Z https://nostr.ae/nevent1qqs2xwl9g3snahj8y5kxfktun3a5zgcc68tmfrqmjmpgnfl3ydfj97gzyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjyr6snju In reply to <a href='/nevent1qqsrtjepgvc2jqeug8wl5vtgjdhgzglgmhpr5c36kk73gz6e0u96rnsn72zhn'>nevent1q…2zhn</a><br/>_________________________<br/><br/>That is plenty, thank you 🙂 2025-05-20T17:09:27Z https://nostr.ae/nevent1qqs2tkx44skmxcnedwgex65uu2d0gg3kun77ntnc05hy5r7hnteyl5szyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjygxyk0e In reply to <a href='/nevent1qqspn6zzvuffxxfc7whf4dhzs62fc9w2cn4rfj0z8hr47qc7zd2988gwzhxlf'>nevent1q…hxlf</a><br/>_________________________<br/><br/>Nice article! (As always) 🙂<br/>Just a super-naive question from a low-energy experimentalist who never properly stidied GR: givel that energy is not (globally) conserved in GR, aren&#39;t arguments like &#34;this violates energy conservation so it can&#39;t work&#34; a bit self-contradictory? What (likely trivial) piece did I miss?<br/><br/><span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/npub1nf4p4rh06z6n6lsvje4txk7eqs23y3hs8vd7nraq6tgwady5qvsqy3nqe4" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>John Carlos Baez</span> (<span class="italic">npub1nf4…nqe4</span>)</a></span> 2025-05-20T16:53:36Z https://nostr.ae/nevent1qqsvhmjxxedh77nwtq0ruxddnw88wyxzsm5k4k0t3hxgg33avh0efqgzyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjyevc0mc In reply to <a href='/nevent1qqsdd252a8amha0rhqv4dwx245k4vv5qe8ccx25yu8ugtghrl2ng0asue9px5'>nevent1q…9px5</a><br/>_________________________<br/><br/>Already added ;-)<br/>(A bit small, but that page already has way too many images for the small amount of text) 2025-05-19T09:40:19Z https://nostr.ae/nevent1qqsrujp6w03cn5ctftlsgurxnzax5cevkdfff8vg4hd9v63vtv9gqqczyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjylyly5a In reply to <a href='/nevent1qqsg33c7v7sau3h3euc5pr8djjfvn7uvgy4686tqrrv3w0p7av2843s276xz4'>nevent1q…6xz4</a><br/>_________________________<br/><br/>Finally managed to upload it! <img src="https://commons.wikimedia.org/wiki/File:Stone-Wales_defect_in_Fullerene.gif"> 2025-05-19T08:41:58Z https://nostr.ae/nevent1qqs0848set9ewcr25ac6376v2q3qv6rdru58v9y5anqp6ju5x3p2rlszyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjygz8987 In reply to <a href='/nevent1qqs93pht4dk3ay3nazu5w5tz447zuhea7lun5z0ez2574q9e695fppcpe0n6h'>nevent1q…0n6h</a><br/>_________________________<br/><br/>Imho video and text have very complementary advantages and disadvantages. Video is more immediate, but when you are dealing with complex stuff nothing beats having it spelled down in writing. 2025-05-15T13:18:18Z https://nostr.ae/nevent1qqspzacfdcs44rqfwhjczmt356zqdhfzwm2f3x4wqnjuhsxcylkgf0czyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjys09yg2 Why is everybody doing science explainers in the form of youtube videos, instead of just writing stuff down (which is much more accessible and long-term stable)? 😫<br/>#AcademicChatter #SciComm 2025-05-15T10:20:55Z https://nostr.ae/nevent1qqsg33c7v7sau3h3euc5pr8djjfvn7uvgy4686tqrrv3w0p7av2843szyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjy0ltevf In reply to <a href='/nevent1qqsw8ym70yw47jslzkjrakjqg4m4sfvmvd38r88aag3a3rdzmwatpus4pumaq'>nevent1q…umaq</a><br/>_________________________<br/><br/>Travelling tomorrow, but will upload it and link it as soon as I find a bit of time 🙂 2025-05-12T16:31:58Z https://nostr.ae/nevent1qqsqxuhec439uj59s5zjnpw59h59xjufa0hc49dy8sl6ff6njf4mjdgzyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjy8fnujm In reply to <a href='/nevent1qqsxjw0y48ryapjre9964afhjs8xpxwlm7nlausn4fljnxs5pxkfgsgnu94he'>nevent1q…94he</a><br/>_________________________<br/><br/>Third time&#39;s a charm? 🙂 <br/><span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/npub1xuvzpdcjqy2weakneszg7vh26a7adccgpkfh9t0arjdu584vdrlsh0h8pl" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>Walter Tross</span> (<span class="italic">npub1xuv…h8pl</span>)</a></span><br/><video controls width="100%" class="max-h-[90vh] bg-neutral-300 dark:bg-zinc-700"><source src="https://media.mathstodon.xyz/media_attachments/files/114/495/420/743/377/392/original/98a410848799a586.mp4"></video><br/> 2025-05-12T14:51:50Z https://nostr.ae/nevent1qqsd0240jwm8ms6mgge0ah84v2sunrqxhca6wxgdvspluen8cawg5dqzyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjyracagh In reply to <a href='/nevent1qqspksu6y5nltmeuqe8ltmapzrzwdfgtcp30f0fq8r8zse7ws2gdp0sgua5y9'>nevent1q…a5y9</a><br/>_________________________<br/><br/>Would it make sense to always keep the red part in front and make it rotate only 180 degrees forth and back? 2025-05-12T12:42:36Z https://nostr.ae/nevent1qqszk8wpr7wedpevhfut5gll2rv6ff6hgnzekp8je57n920jtf4s0fgzyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjyqj47cx In reply to <a href='/nevent1qqsv7qzks958qng2k47kxvgpxdm7fy4p7jrrrz4jkrekyufz6ay8y8c5ftnvf'>nevent1q…tnvf</a><br/>_________________________<br/><br/>Any better?<br/><video controls width="100%" class="max-h-[90vh] bg-neutral-300 dark:bg-zinc-700"><source src="https://media.mathstodon.xyz/media_attachments/files/114/494/429/577/960/394/original/7f06130c5bef197c.mp4"></video><br/> 2025-05-12T10:40:00Z https://nostr.ae/nevent1qqswr5y3qnq3d7dnxff0ur649a3qh8n5gjfx8q3kphwjrf57a6awh7szyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjyqsxrs3 In reply to <a href='/nevent1qqsgl8ew9dmq4gcpz83xrvr42lqyryx8wmspp37cleegy6389z7s5rs0xuzhd'>nevent1q…uzhd</a><br/>_________________________<br/><br/>Shared on bsky with my &#34;active particles&#34; expert (Giovanni Volpe) to see if he has an understandable explanation. 2025-05-11T11:07:56Z https://nostr.ae/nevent1qqsg0ygndvcsgwmastm2hge7677nwmquw8tr7skahxh62qdh6xzsvtczyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjynnt2tl In reply to <a href='/nevent1qqspaja6xddc9vnnn73vru0sz7z2thk5xm70hes44k00h94qkuqga3qvmu4t2'>nevent1q…u4t2</a><br/>_________________________<br/><br/>draft number 1. Feedback is welcome 🙂 <br/>(I know the animation will benefit from being smoother, but I won&#39;t generate a ton of frames for a draft)<br/><video controls width="100%" class="max-h-[90vh] bg-neutral-300 dark:bg-zinc-700"><source src="https://media.mathstodon.xyz/media_attachments/files/114/477/201/989/778/967/original/032bbb7157376e68.mp4"></video><br/> 2025-05-09T09:40:19Z https://nostr.ae/nevent1qqsrfckcaafcjqv9ypn8upqxyfl9fynqphzkfu6qc636qgc4hpv7lgqzyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjyhszcy2 In reply to <a href='/nevent1qqsfqa6vrvrkjky4c3z6l6cny97azqwhyrdmmt5mmgp25qrzxme7zfsgldp8y'>nevent1q…dp8y</a><br/>_________________________<br/><br/>I am truly happy you had plenty of positive interactions with them. I didn&#39;t. I&#39;ve never seen them before and this was not the best first impression. 2025-05-08T13:20:47Z https://nostr.ae/nevent1qqsyf3f5x50jnmt0kjv5dvpmhlghjyk3jrpdhq49tey4j407w6maxjqzyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjy9xlphp In reply to <a href='/nevent1qqsftl9xttl0pvm0280s54zlf8gmv08dp885p07a7eus5xpxgtf4rzgs8j5cj'>nevent1q…j5cj</a><br/>_________________________<br/><br/>Have you considered asking me &#34;why do you think blue noise is hyperuniform?&#34; instead of presenting me with an annoyingly ill-formulated puzzles like I was a middle-schooler? 2025-05-08T09:38:02Z https://nostr.ae/nevent1qqsdpze9qx2au2hha9zseakuehgarhhv029atqnvjam4dzw23g88kaszyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjyatayzd In reply to <a href='/nevent1qqsqk69xfx3rpzslgtaeccr0y8clrxdaw495vqrxve4lzkr0uujmu7qkq3mfn'>nevent1q…3mfn</a><br/>_________________________<br/><br/>Counter-question: what are you hoping to achieve by jumping in my mentions asking badly formulated questions?<br/><br/>Yes, our brain is wired for pattern-recognition and doesn&#39;t like white noise very much. That is extremely well-known.<br/><br/>Also: estimating the underlying distribution from just a couple hundred samples is bound to have an enormous uncertainty even if you can run a full statistical analysis. 2025-05-08T09:21:25Z https://nostr.ae/nevent1qqsfwwfds87zw77zm9hswjw3ujrq0vhu8j5rxc7lurj3v02cwn2kurqzyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjysmarrj In reply to <a href='/nevent1qqswf0l84ldx7d0k7raxzchdnacvyn7tzyqd22g4h3awewrp4uvn9egngnjry'>nevent1q…njry</a><br/>_________________________<br/><br/>They are all random. They are just (randomly) sampled from different distributions.<br/>Not all randomness is white noise.<br/><br/><span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/npub1hkl73lt3zwsr7pystdsfwytxhetawyzuvaq7ra55t3rdzrgs974sww9agh" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>demofox</span> (<span class="italic">npub1hkl…9agh</span>)</a></span> <span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/npub1nf4p4rh06z6n6lsvje4txk7eqs23y3hs8vd7nraq6tgwady5qvsqy3nqe4" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>John Carlos Baez</span> (<span class="italic">npub1nf4…nqe4</span>)</a></span> 2025-05-08T09:08:32Z https://nostr.ae/nevent1qqsddd2grzp004y4syulqplsm2tvyjwzp68dwa45gpvrnktve0fy62gzyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjyde5ctn In reply to <a href='/nevent1qqswpcmf2yv9sejsv8ldweyrgps3393md03nf6tqwvm4k5gncgfgwusdg7veg'>nevent1q…7veg</a><br/>_________________________<br/><br/>: is blue noise hyperuniform? (I think it is, but you are the expert)<br/><br/><span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/npub1nf4p4rh06z6n6lsvje4txk7eqs23y3hs8vd7nraq6tgwady5qvsqy3nqe4" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>John Carlos Baez</span> (<span class="italic">npub1nf4…nqe4</span>)</a></span> 2025-05-08T08:53:35Z https://nostr.ae/nevent1qqsgnydnu6ly35hm44a4xwy5yzklsv6jgmvfjchj6xrck90h7l0qhqgzyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjy5lalax In reply to <a href='/nevent1qqs2655hl23wc6ujun7kjfy8s55c9043pakfa96w7jsesxwqgkleewsvjjz3l'>nevent1q…jz3l</a><br/>_________________________<br/><br/>&#34;but whenever I try to explain it online, a bunch of men get offended&#34; which is not independent from the reason why it is predominantly men 😉 <br/><br/><span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/npub1nglm6cxzun8cxs7nh88j8lxnyuqx8jtwrs9s4964mufkwstqydaqad2ylu" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>virgilpierce</span> (<span class="italic">npub1ngl…2ylu</span>)</a></span> 2025-05-06T13:35:42Z https://nostr.ae/nevent1qqs9n5xdls5rxjltheeww2r4he5tmt0ljm6sqdfhq64ph6auhrwwv2szyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjyqu03pj In reply to <a href='/nevent1qqsx2969k063fu5nmkz649zvycwhczs3g5yk6mypatpqqq6pu072cfgm082zq'>nevent1q…82zq</a><br/>_________________________<br/><br/>No. It was a VERY stupid mistake on my part. 2025-05-06T08:08:08Z https://nostr.ae/nevent1qqst0f95aq48yjntltq4ncn9jzql5r9ndm0v8lp5f49k72lhggmuzmgzyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjylyxk8l In reply to <a href='/nevent1qqspaja6xddc9vnnn73vru0sz7z2thk5xm70hes44k00h94qkuqga3qvmu4t2'>nevent1q…u4t2</a><br/>_________________________<br/><br/>Pity I am now locked out of my Wikipedia account (due to a stupid mistake during a password update). Will have to create a new one. 2025-05-06T07:59:50Z https://nostr.ae/nevent1qqsf28kqwyefw27w2dyprsc8cavrp7hhyfs5hk8n97fe3yas93hslfszyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjy885uc7 In reply to <a href='/nevent1qqs2773j8de5nqusfk0kzjaejnlcpe9upkhhdkn2l8gwqah092dmkhq4grnje'>nevent1q…rnje</a><br/>_________________________<br/><br/>If I find a bit of time I might take up the challenge 😁 2025-05-06T07:55:54Z https://nostr.ae/nevent1qqsz9rrfv3dq8cnre2q0kgqdp04d97h2d7slde74pcehx82y9gdnzkszyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjyn03js4 In reply to <a href='/nevent1qqsztjsxu3dwvmn087hv8akaqvms62cq3npv8e5pnw5qlslumt3wnjs2cwrxf'>nevent1q…wrxf</a><br/>_________________________<br/><br/>Depressing but not surprising.<br/>(Deleting anything that smells of crackpottery on sight is a strategy that has served me well through the years) 2025-05-05T10:39:43Z https://nostr.ae/nevent1qqsynetsh0d27y5u9c2x3ldxk68a5zm6smgj6xxmyx35m57qumugreczyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjy29xr4j In reply to <a href='/nevent1qqstghjvdhpgwf587wmyzcpxy5nvnnqf85w8sn6mckwa4ez98zmp3ucgt36u6'>nevent1q…36u6</a><br/>_________________________<br/><br/>They should make him a honorary retired engineer 🤭 2025-05-04T09:05:54Z https://nostr.ae/nevent1qqsxwmk9axs7557jcrhfg6czqff30xfu664h3z7005gjrkg6wxnzldszyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjy7lrns2 In reply to <a href='/nevent1qqsd3hp3snahj7gyuyy2fcpmgclhp2h3dvpvv2sfpd2tykfh4p9cjmgwpgqpd'>nevent1q…gqpd</a><br/>_________________________<br/><br/><span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/npub1wspt7d66rkz4ekxqjp7ndssvzlxqz2ehaz6f8mjv3krr2ew5ujnq93rhgk" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>Thony Christie</span> (<span class="italic">npub1wsp…rhgk</span>)</a></span> might have an opinion 2025-04-23T21:01:10Z https://nostr.ae/nevent1qqs8j5u0mwg3fwru8e3lhetys9qnnm200ljwd7anpvpzesaucarc25szyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjym2kxna In reply to <a href='/nevent1qqsrnxurkfpw3qrjxed73ert7jjhc35ulru8u387l0nyj2zhmurcj6cnwntw4'>nevent1q…ntw4</a><br/>_________________________<br/><br/>All those NDAs expiring on April 1st! 😃 2025-04-01T15:49:14Z https://nostr.ae/nevent1qqsx69s6wxj44yh4vgjgp2lwnh9kth8ynuqssy9aslhxsefyx8se00gzyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjyg940ah In reply to <a href='/nevent1qqsxa7vl2r0hysx7ek4k4amkznzzat35cf4u0rraxesh2pmxwkz4dtctwvdyt'>nevent1q…vdyt</a><br/>_________________________<br/><br/>One more reason to move ALL scientific conferences out of the US. 2025-03-20T07:50:57Z https://nostr.ae/nevent1qqs8r3c0f5z00dg8cgp28rgz3y6ewdz2e6g49plhlq7vp9v9e6s63qqzyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjyk5z7cz In reply to <a href='/nevent1qqs894egxn3p944etzjagvrtjr8yy36tapyl4y8mth84sfvrnnnn3lguxje33'>nevent1q…je33</a><br/>_________________________<br/><br/>The curse of double negatives in English. I genuinely don&#39;t know which way is the correct one 🤷‍♂️ 2025-03-12T16:15:57Z https://nostr.ae/nevent1qqswhrc8ks0q2ewavx5q3tptlfl5s0wv292ultx6edkp79sy7s6hk8gzyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjyfdv944 It truly drives me mad hearing US people claiming that, since their system clearly didn&#39;t protect them from a rich guy taking over, it is impossible to design a system that is resilient to rich guys attempting to take over.<br/>Like similar take-overs weren&#39;t attempted in other countries before, and they didn&#39;t fail because the system in those countries was indeed resilient to such things. 2025-03-12T16:09:15Z https://nostr.ae/nevent1qqsdkws2ev8r8jvuyeqvjrdfjck9t8ssw253tnt8r2sy6e3uvnxlmrgzyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjyg9l52c In reply to <a href='/nevent1qqst3prdket5ejwqknlc3f7kajx6st8scl4pg4d9045lkdfj9ejj70gtt8aj8'>nevent1q…8aj8</a><br/>_________________________<br/><br/>Anything bigger than a standard Russel&#39;s teapot is a moon 🙃 2025-03-12T07:39:43Z https://nostr.ae/nevent1qqsdp9jw3cpta6dnnhzw37sjk43a84tz8rw0gvwlnx7uu0xfypm9ftgzyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjyaestt8 In reply to <a href='/nevent1qqsd7fep20sql7vxurtdxt7arcc4maya7lkt4fwtcuc9n8mjsdy49qs3eh44n'>nevent1q…h44n</a><br/>_________________________<br/><br/>Is The Asylum a sort of modern day Troma? 2025-03-12T07:33:48Z https://nostr.ae/nevent1qqsqnahyf6wqaaj3gy40cswev7vlu38cx3yfddkmwl93wchf7qa3hjgzyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjycn80gm In reply to <a href='/nevent1qqs2p3av3etw630lldjadj2479kxapuj68czuv7n2xx93tlkd7kac6snpd7vx'>nevent1q…d7vx</a><br/>_________________________<br/><br/>She definitively knows more general relativity than most scientific journalists, and she has done a lot of good videos through the year. But (and I speak as someone that until a week ago ised to watch essentially all her videos) the frequency at which she is publishing videos that are 90% techbro apology is growing way too fast for a ton of alarm bells not to start ringing in my head.<br/> <span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/npub1pkcue49c92gjkl6g5klsfsxzcejjlm7ck0f6fyk2us6svmythhwqhzqy0t" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>Dima Pasechnik 🇺🇦 🇳🇱</span> (<span class="italic">npub1pkc…qy0t</span>)</a></span> <span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/npub1x78ms56a50yyrl0t6ztxuksk70fp6n5c3wf9u3cl9k8a7g696t5s9nxn0m" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>Dan Piponi</span> (<span class="italic">npub1x78…xn0m</span>)</a></span> <span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/npub17lwktvf6fa9mlehaafftx3a78ge47js4pxd25qvm0wdl80dqtn7sde5ctv" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>npub17lwktvf6fa9mlehaafftx3a78ge47js4pxd25qvm0wdl80dqtn7sde5ctv</span> (<span class="italic">npub17lw…5ctv</span>)</a></span> <span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/npub1nf4p4rh06z6n6lsvje4txk7eqs23y3hs8vd7nraq6tgwady5qvsqy3nqe4" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>John Carlos Baez</span> (<span class="italic">npub1nf4…nqe4</span>)</a></span> <span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/npub1glgxnwfzwxpvj3l6d96vxttum7rkfav3dmcwdkyqz9eqkt83mdfsaxtqzy" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>Bartosz Milewski</span> (<span class="italic">npub1glg…tqzy</span>)</a></span> 2025-03-05T19:09:40Z https://nostr.ae/nevent1qqsyzj03ajjrl7a32370rhsc4f8lpxr8zwkngqn7axaqghz0cmdh9lczyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjynm05m4 In reply to <a href='/nevent1qqspx7fv8k55wu0s52j8hy9yp8lg3chmgrxwg3aldcadtc6ywt49qjswcgzxj'>nevent1q…gzxj</a><br/>_________________________<br/><br/>The video is MUCH worse then it looks from the tiny piece you are quoting. <span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/npub1nf4p4rh06z6n6lsvje4txk7eqs23y3hs8vd7nraq6tgwady5qvsqy3nqe4" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>John Carlos Baez</span> (<span class="italic">npub1nf4…nqe4</span>)</a></span> <span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/npub1glgxnwfzwxpvj3l6d96vxttum7rkfav3dmcwdkyqz9eqkt83mdfsaxtqzy" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>Bartosz Milewski</span> (<span class="italic">npub1glg…tqzy</span>)</a></span> 2025-03-02T18:42:38Z https://nostr.ae/nevent1qqsdudzhg4f58r6nmvvghkgncualgcthzkngzwa0t3try8r5ry2nq9czyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjyn2sep5 In reply to <a href='/nevent1qqsglj5fawlt0pm8lxrldrlrzwgc6yslzue9vwlyc89rpfvjgsmtcxq2d8ae8'>nevent1q…8ae8</a><br/>_________________________<br/><br/>The sad part is that she used to be very reasonable (although I never appreciated her use of &#34;Physics&#34; to mean &#34;the tiny sub-sub-fieldnI used to work in&#34;) 2025-03-02T17:14:12Z https://nostr.ae/nevent1qqsqhrm72u2kn4l548dugnpmytvsedz0tfyv2hzyjsrqyew79jtn6mczyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjylycl5t In reply to <a href='/nevent1qqswqyyvjgnydsycvpr7pfmk6vwq0wqatm594t5gqldejj2n7vhvq6sq26g2q'>nevent1q…6g2q</a><br/>_________________________<br/><br/>Isn&#39;t the very fact that 20k games were released part of the problem? Even if you are a good-willing game journalist you are unlikely to be able to try but a tiny fraction of those 20k games, and you have to decide if to devote your limited time to try a game nobody is talking about, or a game you were told by many that is a GOOD indie game. 2025-02-28T11:05:47Z https://nostr.ae/nevent1qqstf26kpjj5tgj3pkau93r2ppd9l6g7zvraqxzg2aw44zemeupfnvgzyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjyd2ssd6 In reply to <a href='/nevent1qqsqlkt2tymgy9f0xg65wmrmzg6lxlkdg3wucm0fs5er5t2vfska4zgw08sff'>nevent1q…8sff</a><br/>_________________________<br/><br/>But at least category theory to design better software for epidemiology is a new and exciting topic! Anderson localization is fascinating, but people have banged their head on it for decades 🙂 <br/>Anyway, I can think of 3-4 people who probably work on it most of their time, but I am sure that there is a lot of people like me who have it in the back of their mind but don&#39;t do anything with it. 2025-02-03T17:10:37Z https://nostr.ae/nevent1qqs0dwlc4rmd80guyh7u8nk6w9dflcmx7gg39funvf586p2fm2d3swszyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjyhw5mq3 In reply to <a href='/nevent1qqsy697n2a3ftc4t67jyexg3ekc58589g0je5njj3wnd02uxjmy75mcy7nntm'>nevent1q…nntm</a><br/>_________________________<br/><br/>I mean that nowadays there isn&#39;t a lot of people working on it. It was a very popular topic at a certain point, but it got out of fashion and people moved to other problems 🙂 2025-02-03T16:57:54Z https://nostr.ae/nevent1qqs85rm89373f7s2n0kdm260gypqx4u058wjy2ghx0v38fz4sy0d6mgzyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjyxwlyuh In reply to <a href='/nevent1qqszh58axtumjgx4wamzvck57fcge7au9ag5jznue6j8h8npfhdtcwslfg8an'>nevent1q…g8an</a><br/>_________________________<br/><br/>Can this be circumvented? Possibly yes. Having correlated disorder seems to be a way. Working with systems where no longitudinal component of the electric field is present is another.<br/><br/>This paper is the latest in this very long story, and show simulations suggesting the a systems made by conductive (non absorbing) spheres might do the trick.<br/>Not sure how easy it is to do this experimentally (spoiler: not at all!) but interesting 🙂<br/><br/>3/3<br/><br/><a href="https://doi.org/10.1103/PhysRevLett.134.046302">https://doi.org/10.1103/PhysRevLett.134.046302</a> 2025-02-03T16:40:46Z https://nostr.ae/nevent1qqszh58axtumjgx4wamzvck57fcge7au9ag5jznue6j8h8npfhdtcwszyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjyj07g9p In reply to <a href='/nevent1qqsz02zxq29e4pc7teq3tuhmvxwd53zja7yvcntkej4hgwgsq3auxxsfe95f3'>nevent1q…95f3</a><br/>_________________________<br/><br/>What about 3D? 3D turned out to be more complicated, as the theory tells us that Anderson localization in 3D is not guaranteed, but can only happen if the system is disorder &#34;enough&#34; (without a well specified definition of &#34;enough&#34;). For (ultra)sound it took until 2008 to get an unequivocal proof that Anderson localization was happening, but nobody had any problem with it once it was published. [<a href="https://www.nature.com/articles/nphys1101">https://www.nature.com/articles/nphys1101</a>]<br/>For light the story is a LOT more complex. To the best of my knowledge the first claim of Anderson localization of light in 3D is from a 1997 Nature paper, that was received with some scepticism by the community. [<a href="https://www.nature.com/articles/37757">https://www.nature.com/articles/37757</a>, <a href="https://www.nature.com/articles/18347">https://www.nature.com/articles/18347</a>]<br/>In 2012 the very group that put the first result into question published their own &#34;proof&#34; of Anderson localization of light in 3D. This was also received with scepticism. [<a href="https://www.nature.com/articles/nphoton.2012.313">https://www.nature.com/articles/nphoton.2012.313</a>, <a href="https://www.nature.com/articles/nphoton.2013.210">https://www.nature.com/articles/nphoton.2013.210</a>]<br/>So, by the mid &#39;10s the situation was that there were a few competing claims from well regarded groups but nobody in the community believed in either of them.<br/>(Notice that nobody ever claimed the data in the papers were falsified. It has always been an argument about how to interpret those data).<br/><br/>Then, in 2014, Skipetrov published a theoretical paper suggesting that, under normal condition Anderson localization for light can&#39;t happen in 3D.<br/>The problem is that at the levels of disorder necessary, the scatterers are in the near field of each other. This breaks some of the underlying necessary assumptions for Anderson localization to exist. [<a href="https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.112.023905">https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.112.023905</a>]<br/><br/>2/ 2025-02-03T16:40:36Z https://nostr.ae/nevent1qqsz02zxq29e4pc7teq3tuhmvxwd53zja7yvcntkej4hgwgsq3auxxszyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjyzd4qns #PhysicsJournalClub<br/>&#34;Anderson Transition for Light in a Three-Dimensional Random Medium&#34;<br/>by A. Yamilov, H. Cao, and S. Skipetrov<br/>Phys. Rev. Lett. 134, 046302 (2025)<br/><br/>Anderson localization is a phenomenon where wave interference in a disordered scattering medium results in the wave being unable to propagate. It is a fascinating, complex, and VERY niche topic.<br/>It is also the centre of never-ending arguments.<br/><br/>Anderson localization was originally proposed as a mechanism to explain why certain spin states in metals full of impurities would take longer to relax than expected (the answer was: their quantum state could not propagate due to the disorder). [<a href="https://www.nobelprize.org/uploads/2018/06/anderson-lecture-1.pdf">https://www.nobelprize.org/uploads/2018/06/anderson-lecture-1.pdf</a>]<br/>It was soon realized that electron-electron interaction would dominate over a pure &#34;Anderson localization&#34; in most solid state systems, where a similar effect (&#34;Mott insulation&#34;) would dominate.<br/><br/>The topic had a resurgence when it became clear that Anderson localization was a general wave phenomenon, and it wasn&#39;t restricted to electrons, but could in principle happen to any wave, e.g. sound or light. [<a href="https://doi.org/10.1103/PhysRevLett.58.2486">https://doi.org/10.1103/PhysRevLett.58.2486</a>]<br/>Due to its nature, Anderson localization is easier to achieve the lower the dimensionality of the system is. Anderson localization of (ultra)sound in 1D and 2D were quickly discovered, with light coming a few years later.<br/><br/>1/ 2025-02-03T16:40:00Z https://nostr.ae/nevent1qqsf8trwp2zmncpryv82ewy6d8rx4h2wdpzqkalzjcd05vm7fpktqsszyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjypfndv2 In reply to <a href='/nevent1qqsd29ex403xgckcqmndgha4wfkhg95h967g9wt74lq6s04hpv3qy8gny4459'>nevent1q…4459</a><br/>_________________________<br/><br/>Most people I know struggled with even the move from Twitter to Bsky, despite the fact that they are very similar. Moving to Mastidon requires a lot of extra learning, and moving to any other Fedi service is largely impossible if you are not already in the know, as there is no easily accessible explanation on how they work from a user standpoint. 2025-01-28T18:40:21Z https://nostr.ae/nevent1qqspue7dc8w7k0snnllxmdsc8nmshv9mcqv8tz9vlq2ynthzvms2lwczyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjylyk8ch In reply to <a href='/nevent1qqsxxafx8jmjnq6fj00rhg04099ywax8l3q7050suwscwsjzq6rr7pcjw6fwn'>nevent1q…6fwn</a><br/>_________________________<br/><br/>Do you know of any &#34;for experimentalists/ for dummies&#34; kind of introduction on how renormalization/ effective field theory work? 🙂 <br/><br/> <span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/npub1vlchukd4yknuculh52a5xzq98k4fcndnp4ptnl9jx7gr6j5nqsls06mzqq" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>DougMerritt (log😅 = 💧log😄)</span> (<span class="italic">npub1vlc…mzqq</span>)</a></span> <span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/npub1nf4p4rh06z6n6lsvje4txk7eqs23y3hs8vd7nraq6tgwady5qvsqy3nqe4" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>John Carlos Baez</span> (<span class="italic">npub1nf4…nqe4</span>)</a></span> <span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/npub1s4upsyxlf4pjhfwqusek8xkz344m7m6h0t60ssq29znn5durr55skt7vpz" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>Stijn De Baerdemacker</span> (<span class="italic">npub1s4u…7vpz</span>)</a></span> <span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/npub12cuzzqzv8e8y7na77a9zv47mx2v6pec60qs5h7takzmv5p0mw0fsmgd38p" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>Greg Egan</span> (<span class="italic">npub12cu…d38p</span>)</a></span> 2025-01-28T11:52:41Z https://nostr.ae/nevent1qqsxllfqld3gkryup0jkpt0fn9f4wmtewk5almd32zz0g0397m2aaaqzyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjynz60hr In reply to <a href='/nevent1qqsrhy3hha5e9tjgftqy4smgz6qrqm43rdjwalv996nf9waqg7szh7c7ezv53'>nevent1q…zv53</a><br/>_________________________<br/><br/>This kind of discussions is the reason why it is worth being on social media ♥️ 2025-01-28T07:41:06Z https://nostr.ae/nevent1qqszxf2352pags3qwlsznhnkryw3hu3hj2d9ll5nrka6zlchj003gsgzyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjyv0dvqm In reply to <a href='/nevent1qqs9tlpvx4camyu7lzltse036z3knpr23cqhp2u30vjxv5d8x4zrc5qyh003l'>nevent1q…003l</a><br/>_________________________<br/><br/>In the sub-sub-field &#34;light multiple scattering&#34; we use Feynman diagrams a LOT! We do it for a massless field, but the formulas we get are very similar to the ones in condensed matter.<br/><br/><span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/npub1vlchukd4yknuculh52a5xzq98k4fcndnp4ptnl9jx7gr6j5nqsls06mzqq" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>DougMerritt (log😅 = 💧log😄)</span> (<span class="italic">npub1vlc…mzqq</span>)</a></span> <span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/npub12gnjepalfuzt5zjywxj0vzjf6e3kpjt8hnsqqs8l3fzv2sxvwxps6qd572" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>Matt McIrvin</span> (<span class="italic">npub12gn…d572</span>)</a></span> <span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/npub1s4upsyxlf4pjhfwqusek8xkz344m7m6h0t60ssq29znn5durr55skt7vpz" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>Stijn De Baerdemacker</span> (<span class="italic">npub1s4u…7vpz</span>)</a></span> <span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/npub12cuzzqzv8e8y7na77a9zv47mx2v6pec60qs5h7takzmv5p0mw0fsmgd38p" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>Greg Egan</span> (<span class="italic">npub12cu…d38p</span>)</a></span> 2025-01-26T19:37:05Z https://nostr.ae/nevent1qqswcfk59qlnschj236qzl52a8gpu2flnxrzdxhsefr7k0nwl00tnggzyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjyafhtff In reply to <a href='/nevent1qqsfk7qgs7atgpphxqlgq7tna8ff0esvrf6uvn08nt5ctnq73x58m2qhcsmff'>nevent1q…smff</a><br/>_________________________<br/><br/>After working with it for 15 years I reached the conclusion that classical electrodynamics is cursed.<br/><span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/npub1s4upsyxlf4pjhfwqusek8xkz344m7m6h0t60ssq29znn5durr55skt7vpz" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>Stijn De Baerdemacker</span> (<span class="italic">npub1s4u…7vpz</span>)</a></span> <span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/npub1nf4p4rh06z6n6lsvje4txk7eqs23y3hs8vd7nraq6tgwady5qvsqy3nqe4" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>John Carlos Baez</span> (<span class="italic">npub1nf4…nqe4</span>)</a></span> <span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/npub12cuzzqzv8e8y7na77a9zv47mx2v6pec60qs5h7takzmv5p0mw0fsmgd38p" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>Greg Egan</span> (<span class="italic">npub12cu…d38p</span>)</a></span> 2025-01-26T18:39:24Z https://nostr.ae/nevent1qqszxcd32f2hap0f7fvl7u2qn6j2fruwqhwhlwgw3q4w50j0yjygw7gzyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjysv772c In reply to <a href='/nevent1qqs8ag3sdraxyrzwecpve3cf74shql8kvjj2p8ttf4cp3epmscr5h8calxh3k'>nevent1q…xh3k</a><br/>_________________________<br/><br/>Classical electrodynamics also has both advanced and retarded Green&#39;s functions. 🤔<br/><span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/npub1s4upsyxlf4pjhfwqusek8xkz344m7m6h0t60ssq29znn5durr55skt7vpz" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>Stijn De Baerdemacker</span> (<span class="italic">npub1s4u…7vpz</span>)</a></span> <span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/npub1nf4p4rh06z6n6lsvje4txk7eqs23y3hs8vd7nraq6tgwady5qvsqy3nqe4" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>John Carlos Baez</span> (<span class="italic">npub1nf4…nqe4</span>)</a></span> <span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/npub12cuzzqzv8e8y7na77a9zv47mx2v6pec60qs5h7takzmv5p0mw0fsmgd38p" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>Greg Egan</span> (<span class="italic">npub12cu…d38p</span>)</a></span> 2025-01-26T17:18:39Z https://nostr.ae/nevent1qqsq6nmr2j97yyq7376psjy820q4cwr50mlzur7ugm40n6a0mft4pdqzyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjyn7n09v In reply to <a href='/nevent1qqs8kj2097lpqr2ef5gpz5mm5ncpr3vsdwyltt97qulssmnz6ye93tg4gyaxw'>nevent1q…yaxw</a><br/>_________________________<br/><br/>The trick is to learn about propagators in classical electrodynamics, where they are just as complicated but look less weird and intimidating 😉 2025-01-25T18:24:07Z https://nostr.ae/nevent1qqsp2hvkeluckmq6fmv6x0fmnrjvfvm8dnkhu7qn94neduhz7s5l7xgzyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjyzkz6uf Feels like the right time to start planning for moving all international scientific conferences to somewhere outside the US. 2025-01-25T18:20:48Z https://nostr.ae/nevent1qqsyl7wu77gjaq7hnchax9el9s2wlyysee8hem6jz20vz7sxfh9h9zqzyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjy0ad5tw In reply to <a href='/nevent1qqsv6kwrjxts4d7vh6mkjcs9mpm4cy8e2e98h5m2ny7rypauwsrdwlcklkwnz'>nevent1q…kwnz</a><br/>_________________________<br/><br/> <img src="https://media.mathstodon.xyz/media_attachments/files/113/883/018/208/883/008/original/80b43cc30b979be6.png"> <br/> 2025-01-24T11:10:38Z https://nostr.ae/nevent1qqsxrjkjlwh834afxd2de9g5nkntzttuauqnhx82wxpphhkxu80hyygzyrsy4wrn52sk6wqez8h74gerup3uqu5x4hu9p4m9zgkjwgatmcqjyxgkkq8 In reply to <a href='/nevent1qqs23nu0spap9lvn6f0c4jwcjd5nyc38gjqy262lhhug9ze0adz4mvs35d0jf'>nevent1q…d0jf</a><br/>_________________________<br/><br/>Reviews of old, obscure games are to me what cat pics are to a lot of people: relaxing palate cleansers from all the negativity 🙂 2025-01-22T09:59:28Z