Hacker News with Generative AI: Physics

Show HN: Real-time nonlinear optics simulation (JS/GLSL) (github.com/westoncb)
An interactive study of controlled nonlinear dynamics, implemented through the concrete example of coupled optical fields.
Science, Physics, Simulation, Javascript, Web Development
37 points by westoncb 1 day ago | 12 comments
Physicists have shown that an idealized form of magnetism is heatproof (quantamagazine.org)
Sunlight melts snowflakes. Fire turns logs into soot and smoke. A hot oven will make a magnet lose its pull. Physicists know from countless examples that if you crank the temperature high enough, structures and patterns break down.
Physics, Magnetism, Heat, Materials Science
3 points by headalgorithm 1 day ago | 0 comments
Astronomers discover neutron star with an incredibly slow six-hour spin (abc.net.au)
In our galaxy, about 13,000 light-years away, a dead star called ASKAP J1839-075 is breaking all the rules … extremely slowly.
Astronomy, Neutron Stars, Space, Physics
16 points by Brajeshwar 1 day ago | 1 comments
Physicists who want to ditch dark energy (nautil.us)
The idea that mysterious stuff speeds up the acceleration of the universe could be a big mistake
Physics, Cosmology, Dark Energy
106 points by dnetesn 6 days ago | 147 comments
We need to 'gravitise' quantum mechanics, not quantise gravity [video] (youtube.com)
Quantum Mechanics, Physics, Theoretical Physics, Science
6 points by gone35 6 days ago | 1 comments
Why the weak nuclear force is short range (profmattstrassler.com)
The “range” of a force is a measure of the distance across which it can easily be effective.
Physics, Nuclear Physics, Science
373 points by sohkamyung 6 days ago | 194 comments
Time Dilation Formula / Calculator (timedilationformula.com)
Time dilation is like a magic trick that happens when you travel really fast. The faster you go, the slower time moves for you compared to people standing still on Earth!
Physics, Time, Relativity
50 points by mpclarkson 8 days ago | 52 comments
Physicists Magnetize a Material with Light (news.mit.edu)
MIT physicists have created a new and long-lasting magnetic state in a material, using only light.
Physics, Magnetism, Light
156 points by thunderbong 10 days ago | 70 comments
All clocks are 30 seconds late (victorpoughon.fr)
OK, this is going to sound crazy: I believe all clocks are 30 seconds late.
Time, Physics, Opinion
370 points by fouronnes3 11 days ago | 357 comments
Relax while watching bouncing particles making connections when they get closer (tiki.li)
Particles - Code More samples
Visualizations, Physics, Programming, Creative Projects
225 points by tikili 11 days ago | 79 comments
A video tour of the Standard Model (2021) (quantamagazine.org)
The Standard Model is a sweeping equation that has correctly predicted the results of virtually every experiment ever conducted, as Quanta explores in a new video.
Science, Physics, Video, Quantum Mechanics
119 points by goodway 12 days ago | 14 comments
The sham legacy of Richard Feynman [video] (youtube.com)
Physics, Legacy, Biography, Science, Video
7 points by chrismatic 13 days ago | 4 comments
Origami Black Hole (xkcd.com)
Origami, Physics, Humor
7 points by tobr 14 days ago | 0 comments
Dark Energy May Not Exist: Something Stranger Might Explain the Universe (sciencealert.com)
There might not be a mysterious 'dark' force accelerating the expansion of the Universe after all. The truth could be much stranger – bubbles of space where time passes at drastically different rates.
Cosmology, Physics, Universe, Time
74 points by NelsonMinar 14 days ago | 76 comments
SpaceSim (pavelsevecek.github.io)
OpenSPH is a library and graphical application used primarily for scientific simulations.
Simulation Software, Open Source, Physics
366 points by Luc 14 days ago | 46 comments
The Dome (2005) (sites.pitt.edu)
While exotic theories like quantum mechanics and general relativity violate our common expectations of causation and determinism, one routinely assumes that ordinary Newtonian mechanics will violate these expectations only in extreme circumstances if at all. That is not so. Even quite simple Newtonian systems can harbor uncaused events and ones for which the theory cannot even supply probabilities.
Physics, Science, Causality, Newtonian Mechanics
45 points by Tomte 15 days ago | 38 comments
The Maxwell-Heaviside Equations Explained by the Theory of Informatons (researchgate.net)
Physics, Mathematics, Information Theory
22 points by keepamovin 16 days ago | 7 comments
Experimental evidence photon can spend negative amount of time in an atom cloud (arxiv.org)
Physics, Quantum Mechanics, Time, Experiments, Atomic Physics
4 points by belter 16 days ago | 0 comments
Billionaires want you to know they could have done physics [video] (youtube.com)
Billionaires, Physics, Humor, Social Commentary, Video
6 points by NN88 16 days ago | 0 comments
Elektročas HH3 – the most accurate pendulum clock on the planet (cern.ch)
Can a pendulum clock be good to one second in 158 million years? A piece of cake...
Timekeeping, Physics, Clocks, Accuracy
109 points by tverbeure 18 days ago | 42 comments
Proved my physics professor wrong with help from my 3D printer (reddit.com)
Vindicated after 25 years! Proved my physics professor wrong with help from my P1S! (v.redd.it)
Physics, 3D Printing, Education, Proof, Vindication
7 points by niceice 18 days ago | 1 comments
Frequency shifts do not imply quantum entanglement (2022) (benbrubaker.com)
I’ve somehow become the go-to twitter critic (jointly with Douglas Natelson, a Rice University physics professor with an excellent blog) of a recent unpublished manuscript that has generated a lot of premature press coverage. The authors of this paper claim to have demonstrated quantum entanglement between a superconducting qubit — a special kind of electrical circuit that exhibits quantum behavior — and a remarkably hardy little creature called a tardigrade.
Quantum Physics, Science, Physics, Twitter
10 points by c1ccccc1 19 days ago | 0 comments
Elektročas HH3: the most accurate pendulum clock on the planet (cern.ch)
Can a pendulum clock be good to one second in 158 million years? A piece of cake...
Timekeeping, Physics, Clocks, Accuracy
7 points by fanf2 19 days ago | 1 comments
Plasma heating efficiency in fusion devices boosted by metal screens (phys.org)
Heating plasma to the ultra-high temperatures needed for fusion reactions requires more than turning the dial on a thermostat.
Fusion, Physics, Science, Energy
5 points by PaulHoule 20 days ago | 3 comments
Mathematician Reveals New Enigmas for Time Travelers (discovermagazine.com)
First, the good news for time travelers. Physicists have long recognized that nothing in the laws of physics specifically forbids time travel.
Time Travel, Physics, Science, Mathematics
15 points by austinallegro 21 days ago | 1 comments
What would happen if you made a planet out of fish? (james-simon.github.io)
In the fall of 2019, Ryan Roberts and I gave a talk to high schoolers at Berkeley Splash on analyzing absurd scenarios with real physics.
Physics, Science, Hypothetical Scenarios, Creative Projects
22 points by jxmorris12 22 days ago | 2 comments
Neutron Stars with Less Mass Than a White Dwarf Might Exist (universetoday.com)
Most of the neutron stars we know of have a mass between 1.4 and 2.0 Suns. The upper limit makes sense, since, beyond about two solar masses, a neutron star would collapse to become a black hole. The lower limit also makes sense given the mass of white dwarfs. While neutron stars defy gravitational collapse thanks to the pressure between neutrons, white dwarfs defy gravity thanks to electron pressure.
Astronomy, Neutron Stars, White Dwarfs, Physics
28 points by rbanffy 22 days ago | 3 comments
The Dome Paradox: A Loophole in Newton's Laws (youtube.com)
Physics, Science, Paradoxes
10 points by ta8645 23 days ago | 4 comments
Billionaires want you to know they could have done physics [video] (youtube.com)
Billionaires, Physics, Satire, Video
7 points by indigodaddy 23 days ago | 0 comments
Phugoid (wikipedia.org)
In aviation, a phugoid or fugoid (/ˈfjuːɡɔɪd/ ⓘ) is an aircraft motion in which the vehicle pitches up and climbs, and then pitches down and descends, accompanied by speeding up and slowing down as it goes "downhill" and "uphill".
Aviation, Flight Dynamics, Physics, Aerodynamics
43 points by thunderbong 24 days ago | 22 comments