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Aug
21
comment Is there an intuitive explanation for the Southward force caused by the Coriolis Effect on rotating spheres?
@aPhysicist, no because even if the Eastward velocity is small, it is nevetheless still an increase in radial velocity and thus will require an increase in radial orbit to sustain. Remember, even when wind is 0, there is still a radial velocity due to Earth's rotation.
Jul
19
comment Radiance equation
@mcb, no in this case $\omega$ refers to angular frequency of the radiation, not solid angle. mcb, also look above at my comment on his question.
Jul
2
awarded  Curious
Jun
21
accepted What is an intuitive explanation using forces for the equatorial bulge?
May
19
comment Quantum Simulation of Schrodinger's equation
the momentum operator is the same as: $\hat{P}= \sum_i p_i|p_i><p_i|$ So clearly if the eigenstate of position is the fourier transform of momentum, you will need a fourier transform and it's complex conjugate on either side of that equation to get position.
May
18
comment solution of pendulum equation
Where do you get 10 degrees from?
May
18
comment Speed of light as a universal speed limit
@Raskolnikov, correct.
May
18
comment Speed of light as a universal speed limit
I don't believe the propagation delay is an assumption in general relativity, but rather it falls out of the equations.
May
18
comment Speed of light as a universal speed limit
No it can be proven that no massive particle can be accelerated beyond than the speed of light using the theory of relativity. As speed increases, the inertia opposing a further increase in speed increases, such that as you approach c, you require more and more force to get faster. You will need infinite force to ever get to c.
May
18
comment Question on Newton's law
It's wrong to say "force of acceleration" but correct to simply say "force". I imagine this is what your teacher was getting at.
May
18
revised Why is there no interference pattern at D0 in the delayed erasure experiment?
added 103 characters in body
May
18
comment If everything in the universe doubled in size overnight, would it be noticeable?
@brightmagus, if gravity was just due to expansion, then no planet would ever orbit the sun.
May
15
comment An operator on the other side of the Schrödinger equation
@Matthew, the energy operator extracts energy from the wavefunction. The hamiltonian operator in the Schrodinger equation extracts p^2/2m + potential energy from the wavefunction, which just so happens to equal total energy. Therefore H/psi = E/psi. So both are energy, but just different ways of calculating energy.
May
10
comment Why does a water drop on a hot plate at $150^o C$ evaporate faster than on a plate at $200^o C$?
en.wikipedia.org/wiki/Leidenfrost_effect
May
10
revised A ball is thrown up, and a second ball is dropped- what is the maximum initial velocity of the first ball so that
added 59 characters in body
May
10
answered A ball is thrown up, and a second ball is dropped- what is the maximum initial velocity of the first ball so that
May
9
comment Why is there no interference pattern at D0 in the delayed erasure experiment?
@dmckee, I'm not sure what to say. I've read the entire text, and my question is one that has arisen after reading it. Lubos clearly states in the second point that no interference pattern is observed at D0. But my question is, why not? It looks like the typical double slit experiment, especially if we are able to ignore the rest of the apparatus like Lubos say.
May
8
comment Why is there no interference pattern at D0 in the delayed erasure experiment?
@dmckee, edited to include Lubos' own words and the source.
May
8
revised Why is there no interference pattern at D0 in the delayed erasure experiment?
added 606 characters in body
May
8
asked Why is there no interference pattern at D0 in the delayed erasure experiment?