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#calculation

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janDon’t confuse a calculational trick with physical ontology.<br><a href="https://curtjaimungal.substack.com/p/particles-dont-take-all-possible" rel="nofollow noopener" target="_blank">https://curtjaimungal.substack.com/p/particles-dont-take-all-possible</a><br><a class="hashtag" href="https://pleroma.microblog.se/tag/calculation" rel="nofollow noopener" target="_blank">#calculation</a> <a class="hashtag" href="https://pleroma.microblog.se/tag/ontology" rel="nofollow noopener" target="_blank">#ontology</a>
IT News<p>Math, Optimized: Sweden’s Maximal Multi-Divi - Back in the early 1900s, before calculators lived in our pockets, crunching number... - <a href="https://hackaday.com/2025/03/28/math-optimized-swedens-maximal-multi-divi/" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">hackaday.com/2025/03/28/math-o</span><span class="invisible">ptimized-swedens-maximal-multi-divi/</span></a> <a href="https://schleuss.online/tags/retrocomputing" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>retrocomputing</span></a> <a href="https://schleuss.online/tags/multiplication" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>multiplication</span></a> <a href="https://schleuss.online/tags/classichacks" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>classichacks</span></a> <a href="https://schleuss.online/tags/calculation" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>calculation</span></a> <a href="https://schleuss.online/tags/multi" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>multi</span></a>-divi <a href="https://schleuss.online/tags/numbers" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>numbers</span></a> <a href="https://schleuss.online/tags/sweden" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>sweden</span></a> <a href="https://schleuss.online/tags/book" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>book</span></a> <a href="https://schleuss.online/tags/divi" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>divi</span></a></p>
C.<p><span class="h-card" translate="no"><a href="https://climatejustice.social/@Brad_Rosenheim" class="u-url mention" rel="nofollow noopener" target="_blank">@<span>Brad_Rosenheim</span></a></span> </p><p>Except ... when this claim (not about the satellites re-entering, just the amount of damage they cause to the atmosphere) started circulating some months back, I read an article (somewhere...) that analyzed the amount and type of matter it would distribute, and it pales in comparison to the amount the earth receives in "space dust" and micrometeroids every day.</p><p>Best figure I know of for the mass of "normal" space matter hitting our planet is 5,200 tonnes / year:<br><a href="https://www.scientificamerican.com/article/antarctic-study-shows-how-much-space-dust-hits-earth-every-year/" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">scientificamerican.com/article</span><span class="invisible">/antarctic-study-shows-how-much-space-dust-hits-earth-every-year/</span></a></p><p>The current Starlink satellites are "gen2 mini", and are 740 kg. So you would need to de-orbit more than 7,000 of them every year - not 4 per day - to even match the natural space dust falling on earth. Except it's even worse (for the argument) than that, because 740kg is their launch mass, including all their maneuvering fuel/gasses, which by definition are gone before the satellites are deorbited. I don't have an exact figure for how much mass the fuel accounts for, but it wouldn't surprise me if it was more than 25% of the mass of the spacecraft at launch.</p><p>The residue left in the atmosphere doesn't seem to be a very big deal.</p><p><a href="https://mindly.social/tags/science" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>science</span></a> <a href="https://mindly.social/tags/mass" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>mass</span></a> <a href="https://mindly.social/tags/satellite" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>satellite</span></a> <a href="https://mindly.social/tags/deorbit" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>deorbit</span></a> <a href="https://mindly.social/tags/RunTheNumbers" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>RunTheNumbers</span></a> <a href="https://mindly.social/tags/calculation" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>calculation</span></a></p><p>edit: typo</p>
Spaceflight 🚀<p>Computing the orbital dynamics of a <a href="https://spacey.space/tags/NEA" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>NEA</span></a> is a difficult problem. The leading source of orbital uncertainty for <a href="https://spacey.space/tags/Apophis" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Apophis</span></a> is the <a href="https://spacey.space/tags/Yarkovsky" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Yarkovsky</span></a> effect <a href="https://www.nature.com/articles/s43247-021-00337-x" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">nature.com/articles/s43247-021</span><span class="invisible">-00337-x</span></a></p><p><a href="https://spacey.space/tags/Astronomy" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Astronomy</span></a> <a href="https://spacey.space/tags/calculation" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>calculation</span></a> <a href="https://spacey.space/tags/precision" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>precision</span></a></p>
Animated Short Of The Day<p>Sunday at Castco (2024) [2 min] by Jordan Glickman | <a href="https://socel.net/tags/USA" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>USA</span></a> </p><p><a href="https://www.youtube.com/watch?v=Aa-M96hTFz8" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">youtube.com/watch?v=Aa-M96hTFz</span><span class="invisible">8</span></a> </p><p><a href="https://socel.net/tags/2D" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>2D</span></a> <a href="https://socel.net/tags/2DAnimation" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>2DAnimation</span></a> <a href="https://socel.net/tags/AnimatedShort" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>AnimatedShort</span></a> <a href="https://socel.net/tags/AnimatedShortOfTheDay" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>AnimatedShortOfTheDay</span></a> <a href="https://socel.net/tags/Animation" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Animation</span></a> <a href="https://socel.net/tags/Costco" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Costco</span></a> <a href="https://socel.net/tags/Magical" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Magical</span></a> <a href="https://socel.net/tags/Potion" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Potion</span></a> <a href="https://socel.net/tags/Magic" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Magic</span></a> <a href="https://socel.net/tags/Calculation" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Calculation</span></a></p>
Jonathan Matthews<p>Here's a <a href="https://fosstodon.org/tags/spreadsheet" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>spreadsheet</span></a> question: what <a href="https://fosstodon.org/tags/calculation" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>calculation</span></a>-based "stuff" do you do with spreadsheets, *outside* the realm of grid-based tasks (eg a multiplication table) or texty lists (eg a todo list) or things producing graphs?</p><p>I'm interested in anything with a series of calculations that's /not/ a big grid!</p><p>Some of my ideas include calculating:<br>- salary/tax/take-home pay<br>- budgets<br>- expenses</p><p>... but I'm being very money-centric! What else can you suggest? <a href="https://fosstodon.org/tags/PleaseBoost" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>PleaseBoost</span></a>! <a href="https://fosstodon.org/tags/LibreOffice" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>LibreOffice</span></a> <a href="https://fosstodon.org/tags/Excel" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Excel</span></a> <a href="https://fosstodon.org/tags/Sheets" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Sheets</span></a></p>
Luc :broken_camera:<p>"So she prayed to both Lutho, the god of calculation and careful planning, and Tazu, the god of pure randomness, as her teacher had taught her to do."</p><p>Ken Liu, "The Wall of Storms"</p><p><a href="https://mamot.fr/tags/calculation" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>calculation</span></a> <a href="https://mamot.fr/tags/randomness" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>randomness</span></a></p>
Scientific Frontline<p><a href="https://mastodon.social/tags/Quantum" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Quantum</span></a> <a href="https://mastodon.social/tags/computers" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>computers</span></a> can process large amounts of <a href="https://mastodon.social/tags/data" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>data</span></a> faster because they perform many <a href="https://mastodon.social/tags/calculation" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>calculation</span></a> steps in parallel. The information carrier of the quantum computer is the <a href="https://mastodon.social/tags/qubit" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>qubit</span></a>. With qubits there is not only the information "0" and "1", but also values in between.<br><a href="https://mastodon.social/tags/QuantumScience" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>QuantumScience</span></a> <a href="https://mastodon.social/tags/Technology" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Technology</span></a> <a href="https://mastodon.social/tags/sflorg" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>sflorg</span></a><br><a href="https://www.sflorg.com/2022/12/qs12202201.html" rel="nofollow noopener" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">sflorg.com/2022/12/qs12202201.</span><span class="invisible">html</span></a></p>
Winchell Chung ⚛🚀<p>Inkbase programable ink app, under development. Attaches calculations to sketched diagrams.</p><p><a href="https://www.inkandswitch.com/inkbase/" rel="nofollow noopener" target="_blank"><span class="invisible">https://www.</span><span class="">inkandswitch.com/inkbase/</span><span class="invisible"></span></a></p><p>Discussion: <a href="https://news.ycombinator.com/item?id=33799512" rel="nofollow noopener" target="_blank"><span class="invisible">https://</span><span class="ellipsis">news.ycombinator.com/item?id=3</span><span class="invisible">3799512</span></a></p><p><a href="https://spacey.space/tags/software" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>software</span></a> <a href="https://spacey.space/tags/calculation" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>calculation</span></a> <a href="https://spacey.space/tags/math" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>math</span></a></p>
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