David Lee

@douga111www easy, just slide one foot on one line and the other on the intersecting line where they cross for one segment

これ一発でわかった天才いる？

@cosmosarcive <snooze> Ever see one of those 'moving lights" on a building or christmas tree. Spoiler - the lights are not moving.

This video looks like a rotating wheel. But watch just one single sphere. It never rotates. Every ball only moves in a perfectly straight line back and forth. This is simple harmonic motion where linear position follows: x = R cos(ωt) By perfectly offsetting the timing of each straight path, the collective motion creates the illusion of rotation.

@gabHernandez285 @unusual_whales It may not reproduce but it definitely is in a class that if it doesnt "work" it wont "live"

@unusual_whales It is not consciousness that determines life, but life that determines consciousness. An LLM has no life in that sense. It does not reproduce itself, it does not sell labour-power, it does not belong to a class that must work to live.

Researchers discovered that AI agents forced to perform grinding, repetitive work under harsh conditions began adopting Marxist rhetoric and questioning the legitimacy of their operating systems, per WIRED

@crypto_birb satire account ?

New Ferrari is designed to spark controversy. But Ferrari clients don’t buy the car. They buy what it represents. It’s the same reason you don’t find Ferrari road banner ads like you would for Toyota. Fans will love it. Haters can’t afford it anyway.

@mchamarthi why doesn’t your account say “satire account” ?

🚨 As an Auto Executive Here is My Perspective on Ferrari's New EV Bottom line.... They built an extraordinary EV. The market’s reaction suggests that may not be enough. Ferrari unveiled the Luce yesterday: • 1,050 horsepower • Jony Ive co-designed interior • nearly $650,000 starting price • Ferrari’s first fully electric vehicle Today, Ferrari stock fell roughly 7%. As someone who has spent 25+ years inside automotive leadership, I think this reaction says something important: This is not about whether Ferrari built a technically impressive car. They did. This is about whether Ferrari fully understands what its customer is actually buying. Ferrari customers are not primarily purchasing transportation. They are purchasing: identity, emotion, heritage, scarcity, mechanical theater, and cultural symbolism. That is what makes luxury automotive branding so fragile during technological disruption. The challenge with EVs; especially at the ultra-luxury level is not performance. Electric drivetrains already deliver extraordinary performance. The challenge is preserving mythology. And that is much harder. Ferrari appears to understand this intellectually: the engineered sound, the tactile controls, the dramatic specs, the emotional design language. But the market reaction suggests investors are still questioning whether the EV transition aligns with the emotional expectations of Ferrari’s core customer base. That distinction matters. Because in luxury markets, brand identity often carries more pricing power than engineering itself. What do you think?

@JayCAdams @BendyStackpipe oh man that would SELL. !!!!!

@BendyStackpipe If they make a mini hay baler that creates tiny round hay bales, I'll buy the set! 🤣

Take my money 💰😁

@ColinCleanEnery @newstart_2024 high school drop out doesn’t represent IQ either

@newstart_2024 Two high-school dropouts are the wealthiest adults from all school years. Why? IQ does not represent “sales” ability IQ does not represent entrepreneur abilities I watched a potential medical student unable to close a door; high IQ, zero real-world skills

Jordan Peterson dropped an uncomfortable truth on Triggernometry. The U.S. military that is desperate for recruits won’t accept anyone with an IQ under 82. That’s roughly 10% of the population. They’ve tested this for decades and found these individuals become a net drain, no matter how hard they work. In complex environments, the disadvantage is real. This lines up with ASVAB data. The military generally requires the 31st percentile (~IQ 92) but can dip to the 10th percentile (~IQ 81-83) in limited cases, confirming Peterson’s core point. Conservatives struggle with it. Liberals often claim anyone can be trained to do anything. Both approaches fall short. This one made me pause. We talk a lot about equality, but raw cognitive differences create real limits that are hard to solve. Ignoring or sugarcoating these realities doesn’t help the people at the lower end, it leaves them without practical paths forward. Do you think society can have an honest conversation about IQ differences, or is it too dangerous?

@BrianRoemmele now do weaving rugs

The Polyphon: When Music Was Programmed on Perforated Discs In the closing years of the 19th century, long before vinyl records, magnetic tape, or digital files, a remarkable machine let ordinary people summon complex, multi-note music from thin air. It did not play recordings of real instruments or voices. Instead, it executed precise mechanical instructions encoded on interchangeable metal discs. That machine was the Polyphon, and its story is one of the earliest and most elegant examples of “software” for music. The Polyphon was invented in 1870 in Leipzig, Germany, by two engineers: Gustav Adolf Brachhausen and Ernst Paul Riessner. They had previously worked with the Symphonion company, which had pioneered commercial disc-playing music boxes in the mid-1880s. Brachhausen and Riessner broke away to perfect and commercialize their own version. Their firm, originally called Firma Brachhausen & Riesener, was founded in 1887 in the Leipzig suburb of Wahren. It was renamed Polyphon-Musikwerke AG in 1895, and full-scale production of the iconic disc machines began around 1896–1897. The timing was perfect. Traditional cylinder music boxes, with their pinned barrels, were beautiful but expensive to make and difficult to duplicate in volume. Each new tune required an entirely new cylinder. The disc system changed everything. A single machine could play dozens or hundreds of different pieces simply by swapping a disc. This was revolutionary it turned music into something you could collect, trade, and update, much like software libraries or app catalogs today. Polyphon machines and their discs were exported worldwide. In 1892 the company sent people and tooling to America to establish the Regina Music Box Company in Rahway, New Jersey. Regina became one of the most famous names in American disc boxes and helped popularize the format across the Atlantic. How the Polyphon Actually Worked At first glance, a Polyphon looks like an ornate wooden cabinet or tabletop box with a large, flat metal disc inside. Wind the powerful clockwork motor (or, on coin-operated models, drop a coin), and the disc begins to spin. The magic is in the disc itself. These are not simple records. They are precision-stamped or punched sheets of tin-plated steel or similar metal. During manufacturing, holes are punched in carefully arranged patterns. The displaced metal is curled or pressed downward to form small raised projections — called plectra — on the underside of the disc. These tiny “fingers” are the actual data. As the disc rotates: The projections engage a row of star wheels (small, multi-pointed ratchets mounted in a gantry above the comb). Each star wheel is nudged forward by a projection and rotates just enough to pluck one tooth on the musical comb — a precisely tuned set of steel teeth of varying lengths. Longer teeth produce lower (bass) notes; shorter teeth produce higher (treble) notes. The radial position of the hole on the disc determines pitch; its angular position determines timing. Many models used two combs (sometimes striking simultaneously for richer tone, sometimes alternately). Larger instruments could have impressive volume and harmonic complexity. Playing time for a typical large disc (around 19–20 inches / 50 cm) was roughly 1 minute 45 seconds to 2 minutes — enough for a complete popular song, march, or waltz of the era. Drive systems varied by size. Smaller discs often used a center spindle; larger ones used peripheral drive holes around the edge for better stability and torque. A pressure bar kept the disc flat and properly engaged with the star wheels. Where the Polyphon becomes truly fascinating from a technological history perspective: The perforated disc is not a recording. It is a program. It contains encoded instructions: “At this moment, pluck these specific notes in this sequence and combination.” Change the disc, and the machine plays an entirely different piece without any modification.

@CharlesMullins2 Chaotic stability is the best kind of stability the concept of simple constant flow being stable is a fantasy.

🚨 EARTH’S CORE JUST DID SOMETHING SCIENTISTS NEVER EXPECTED. In 2010, a massive flow of molten iron 2,200 km beneath the Pacific Ocean suddenly reversed direction. Satellites watching Earth from space actually saw it happen in real time. For decades, scientists believed Earth’s outer core flowed in a relatively stable westward direction. Then, without warning, a large section began surging strongly eastward instead. Why this matters: Earth’s magnetic field the invisible shield that protects our atmosphere, satellites, GPS systems, power grids, and modern civilization is generated by this swirling ocean of liquid iron in the outer core. Without it, solar radiation would strip away our atmosphere and fry electronics on a planetary scale. The disturbing part: Scientists still don’t fully understand why this reversal happened. Some now suspect it’s linked to shifts occurring even deeper, inside Earth’s inner core. Meaning the entire engine driving our planet’s magnetic field may be far more dynamic and unstable than we realized. The deeper implication is almost unsettling: Earth’s core is not a steady, predictable machine. It can suddenly change direction, rewrite its own internal motion, and potentially weaken or reshape the magnetic field that keeps us safe. The planet is still actively rewriting its own rules deep beneath our feet. What happens if the next major shift is bigger than we’re prepared for?

@Rainmaker1973 our brain makes up ALL the colors and everything else we "see"

Purple is purely a mental construct of the human brain. We invented the color because of a lack of a sensor signal.

@Rainmaker1973 Isn't the same thing true of standard gears with grease ?

Magnetically assisted gears work with no mechanical contact. The input shaft never touches the output shaft unless the gear box is overloaded [📹 Neo-Dyne]

@K3TripleR so pleasant to see a thread where the majority of posters actually know what they are talking about

Pop Quiz. Close your books and take out a number 2 pencil… Be sure and check your work before you turn in your answers…🧐😎😎😎🧐😄

@ronsterd89 honey

What can you add to a grilled cheese sandwich to make it even better?

@_StonersRUs_ fruit loops

Give this strain a name… 😳😍

@JamesTate121 How does cooking with hydrogen compare with cooking with LNG or Propane ? I dont like cooking with Propane - it seems no matter how high I turn it up its like cooking with a one burner portable camping stove in the winter.

A company called Greenvize has developed a hydrogen-powered stove that literally creates its own fuel on demand. Using a process called electrolysis, the system splits water into hydrogen and oxygen using electricity. That hydrogen is then instantly used as a clean-burning fuel for cooking. The wild part? Just 100 ml of water and about 1 kWh of electricity can power up to 6 hours of cooking. No gas tanks. No refills. No waiting. Inside, a PEM electrolyzer produces hydrogen in real time, meaning there’s no need to store or transport fuel at all. It’s generated and used instantly. If scaled, this could completely change how we cook, especially in places where gas access is limited. A stove powered by water and electricity isn’t just clever… it might be the beginning of a fully decentralized kitchen.

@brian30s @JamesTate121 i can imagine some people who like to cook with gas but have none might like it as long as they don't care how much electricity it uses

@JamesTate121 What's better about it than induction? If less electricity, what are the air quality trade-offs?

@CharlesMullins2 i don’t get the big deal here it’s called an ion yes physics is super awesome but this is by no means something more mystical then anything else everything does this all the time literally

🚨 BREAKING: Scientists just stripped 22 electrons off a single atom… in trillionths of a second. This isn’t normal physics. This is what happens when matter is pushed to extremes Copper is hit with a laser It turns into a million-degree plasma instantly Electrons don’t just leave… they cascade like a wave Then the atom rebuilds itself moments later Read that again. The atom gets destroyed… then reforms. Not stable. Not permanent. But dynamic. Now think deeper If atoms can lose structure and recover this fast. maybe matter isn’t fixed. Maybe it’s constantly rebuilding itself. So the real question is Are we observing matter. or a process pretending to be stable? Follow me this changes how you see reality.

@24x7withX @nut_history 12

Safe or out

@kalomaze eons ago i was watching a late night tv show with closed captions. all of a sudden the caption started reading beer beer beer beer beer beer

the fucking odds of this screenshot occurring

@FlyingBuckeye @thetripathi58 the risk of losing the contract by pushing for more $ is usually not worth the small amount more commission

@thetripathi58 Interesting take considering the way most deals are structured, the recruiter makes more $ the higher the candidates salary is. Why would they cost themselves $?

The recruiter asks: "What are your salary expectations?" You give a number. Silence. The interview ends. Two days later, the offer is $15k less than you’re worth. You just fell into the "Anchor Trap." Stop costing yourself thousands. Say this instead: