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Physics

Stellar Question

 Stellar Question
Question saved by 100 users. This badge can be awarded multiple times.
Awarded 56 times.
What does it mean for a Hamiltonian or system to be gapped or gapless?
Awarded Oct 9, 2024 at 22:11
Are Newton's "laws" of motion laws or definitions of force and mass?
Awarded Sep 11, 2024 at 9:45
About the complex nature of the wave function?
Awarded Jun 2, 2024 at 20:35
Given Newton's third law, why are things capable of moving?
Awarded May 6, 2024 at 16:26
Why can't $ i\hbar\frac{\partial}{\partial t}$ be considered the Hamiltonian operator?
Awarded Jan 31, 2024 at 13:37
Why don't electrons crash into the nuclei they "orbit"?
Awarded Dec 25, 2023 at 6:35
Why is the application of probability in Quantum Mechanics fundamentally different from application of probability in other areas?
Awarded Nov 22, 2023 at 13:32
How is a quantum superposition different from a mixed state?
Awarded Jul 19, 2023 at 10:04
Physical meaning of Legendre transformation
Awarded Jan 8, 2023 at 2:07
Why the Principle of Least Action?
Awarded Nov 22, 2022 at 7:56
Does someone falling into a black hole see the end of the universe?
Awarded Sep 3, 2022 at 3:17
Classical and quantum anomalies
Awarded Jun 29, 2022 at 5:28
Can Maxwell's equations be derived from Coulomb's Law and Special Relativity?
Awarded Apr 24, 2022 at 5:36
Why is the $S_{z} =0$ state forbidden for photons?
Awarded Apr 15, 2022 at 12:40
How do I construct the $SU(2)$ representation of the Lorentz Group using $SU(2)\times SU(2)\sim SO(3,1)$?
Awarded Mar 17, 2022 at 1:46
What is the physical meaning of commutators in quantum mechanics?
Awarded Jan 21, 2022 at 6:47
Why exactly do sometimes universal covers, and sometimes central extensions feature in the application of a symmetry group to quantum physics?
Awarded Jan 20, 2022 at 4:42
Calculus of variations -- how does it make sense to vary the position and the velocity independently?
Awarded Jan 12, 2022 at 7:05
What is a good introductory book on quantum mechanics?
Awarded Jul 10, 2021 at 22:47
A list of inconveniences between quantum mechanics and (general) relativity?
Awarded May 19, 2021 at 12:05
What is a field, really?
Awarded Apr 5, 2021 at 11:11
What, in simplest terms, is gauge invariance?
Awarded Jan 31, 2021 at 3:26
What makes a theory "Quantum"?
Awarded Dec 9, 2020 at 18:40
What's the point of Hamiltonian mechanics?
Awarded Nov 22, 2020 at 4:07
QM without complex numbers
Awarded Nov 21, 2020 at 12:41
What is a complete book for introductory quantum field theory?
Awarded Nov 18, 2020 at 1:25
Reading the Feynman lectures in 2012
Awarded Nov 17, 2020 at 3:21
Intuitively, why are bundles so important in Physics?
Awarded May 12, 2020 at 16:41
Quantum Field Theory from a mathematical point of view
Awarded May 3, 2020 at 17:33
If photons have no mass, how can they have momentum?
Awarded Apr 22, 2020 at 19:26
Why quantum mechanics?
Awarded Apr 4, 2020 at 14:10
Why are there only derivatives to the first order in the Lagrangian?
Awarded Jan 18, 2020 at 12:35
What is spontaneous symmetry breaking in quantum systems?
Awarded Oct 17, 2019 at 19:20
Differentiating Propagator, Green's function, Correlation function, etc
Awarded Apr 30, 2019 at 21:45
Don't heavier objects actually fall faster because they exert their own gravity?
Awarded Apr 22, 2019 at 7:35
Books that every physicist should read
Awarded Dec 1, 2018 at 5:55
Why do people categorically dismiss some simple quantum models?
Awarded Nov 21, 2018 at 20:20
Why are mirror images flipped horizontally but not vertically?
Awarded Oct 26, 2018 at 6:50
How do moving charges produce magnetic fields?
Awarded Apr 30, 2018 at 20:50
What exactly is a photon?
Awarded Apr 15, 2018 at 12:18
How does gravity escape a black hole?
Awarded Oct 31, 2017 at 0:40
Best books for mathematical background?
Awarded Sep 13, 2017 at 21:58
Books for general relativity
Awarded Aug 5, 2017 at 7:08
Why do we not have spin greater than 2?
Awarded Jun 8, 2017 at 7:29
Did the Big Bang happen at a point?
Awarded May 29, 2017 at 13:17
What really allows airplanes to fly?
Awarded Mar 16, 2017 at 19:19
Gauge symmetry is not a symmetry?
Awarded Feb 27, 2017 at 11:56
Do we know why there is a speed limit in our universe?
Awarded Nov 15, 2016 at 1:14
Why does kinetic energy increase quadratically, not linearly, with speed?
Awarded Nov 13, 2016 at 15:48
How does light bend around my finger tip?
Awarded Mar 16, 2016 at 23:59
What software programs are used to draw physics diagrams, and what are their relative merits?
Awarded Jan 20, 2016 at 16:30
What experiment would disprove string theory?
Awarded Jun 14, 2015 at 2:32
Can I compute the mass of a coin based on the sound of its fall?
Awarded Jul 7, 2014 at 14:21
Resource recommendations [closed]
Awarded Feb 12, 2014 at 22:38
Cooling a cup of coffee with help of a spoon
Awarded Dec 13, 2013 at 23:08
List of freely available physics books
Awarded Dec 30, 2012 at 22:34