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hft's user avatar
hft
  • Member for 9 years, 2 months
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33 votes

What shape the Earth would have to be for an object in free fall to follow a straight line trajectory?

27 votes
Accepted

Is there a more "physically mature" way to think about the right hand rule with electromagnetism?

25 votes
Accepted

Zero velocity, zero acceleration?

13 votes

Apart from the sine wave, are there any other waveshapes that could be thought of as commonly appearing "in nature"?

12 votes

What makes energy "the" conserved quantity associated with temporal translation symmetry?

12 votes

What if the resulted error is so large?

11 votes

Does special relativity imply that I can reach a star 100 light years away in less than 100 years?

11 votes
Accepted

How can both of these equations for pressure be correct?

11 votes

What is the relationship between linear momentum and kinetic energy?

11 votes
Accepted

Dirac's definition of probability in quantum mechanics

10 votes

What is the mathematical relationship between the wave functions of QM and the fields in QFT?

10 votes

Bar magnet dropped through coil

10 votes

Are matter waves (de Broglie) classified as transverse or longitudinal?

9 votes

Binomial expansion of non-commutative operators

9 votes

Cross products/avoiding using your hand for the right hand rule in E and M

9 votes

Basics of photoelectric effect

9 votes

Derivation of Newton's Second Law of Motion

9 votes

Meaning of annihilate

8 votes

Is it possible to make the electrons position stationary at a fixed position?

8 votes
Accepted

How does $[H,H] = 0$ imply $dH/dt = 0$?

8 votes
Accepted

Why does a stream of falling water get narrower at the bottom?

8 votes
Accepted

A particular solution for the wave equation in 1+1D

8 votes
Accepted

Explanation on this Molecular hamiltonian

8 votes

Change of variable in Schrödinger's first paper

7 votes

Lagrangian for a free antimatter particle

7 votes
Accepted

Integration of Laplacian by parts

7 votes

Deriving cross product from angular momentum algebra

7 votes
Accepted

Is this symmetry factor in Peskin wrong?

7 votes
Accepted

How is $ \frac{dv}{ dt} = a $?

7 votes
Accepted

How to prove that sum converges to integral using density of states?

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