Lie groups are crucial to some of the most fundamental theories in physics
https://www.quantamagazine.org/what-are-lie-groups-20251203/
#HackerNews #LieGroups #Physics #Theories #Mathematics #QuantumMechanics #FundamentalScience
Debby ⁂📎🐧:disability_flag:
boosted
Physicists Take the Imaginary Numbers Out of Quantum Mechanics
#quantum #quantumphysics #physics #science #quantummechanics #astrophysics
Physicists Take the Imaginary Numbers Out of Quantum Mechanics
#quantum #quantumphysics #physics #science #quantummechanics #astrophysics
I like watching popular science type videos. Everybody who tries to explain quantum mechanics always uses the word "collapse" and they always pull it out of nowhere and make no effort to describe what the hell they're talking about. Why is this? Are they being paid off by the dictionary people to use specifically that word or something? Do I have to actually learn physics if I want to know what's going on here?
@MegaMichelle Einstein's opposition to quantum mechanics included a paper complaining that the equations for alpha particle emission described an expanding probability sphere, but in a cloud chamber, the alpha particle makes a linear track. He wasn't thinking about all the other atoms in the cloud chamber. The probability sphere "collapses" into a line when the alpha particle starts affecting the behavior of other atoms. Physicists call that "a measurement" or "an observation" that reduces (collapses) the area of probability from being a cloud (or other shape) into a point or line. It could be said that the wave of probability collapses into a particle of actuality.
https://youtu.be/gY6Jr7tB2fU?si=N7YP-GZjVS7bKDst
We see light behaving as a wave most of the time and behaving as photon only when it hits matter.
100 years of #quantummechanics this year! Werner Heisenberg introduced fundamental uncertainty into physics and demolished Newtons clockwork.
Few people know that Werner Heisenberg's youngest son Martin spent his career introducing uncertainty into #neuroscience studying #drosophila fruit flies.
His experiments can tell us a lot about how human brains work. I think we ought to embrace the uncertainty!