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seen May 9 at 17:48

Maybe


May
5
answered Do these cars rotate on themselves?
May
5
comment Gas vs electric cooking
Not totally 'removing', just hove the pan 2 inches above the stove.
May
5
answered Gas vs electric cooking
May
3
comment High Current at first and then steady from a battery
depends on the exams, the answer could be: 1. cold wire has lower resistance; 2. capacitance of the circuit can not be ignored
May
3
comment How does light bend around my finger tip?
It is indeed diffraction. Just think about you can hear people around a corner with sound bending, the acoustic wave is an exaggerative version of light wave.
May
2
comment Geometry in diagonal matrix and inertia tensor
It's neither better, nor worse. As long as the axis is symmetric, you get diagonalized inertia tensor.
May
2
comment Geometry in diagonal matrix and inertia tensor
The intuition is symmetry. By picking the most symmetric axises, you literally 'rotate' the tensor matrix and make it diagonal.
May
2
comment Mass eigenstate of neutrinos
Mass is not fixed... considering accelerators and E=mc^2. Energy is an eigenvalue, so the same applies to mass.
May
2
comment Probablilites for wave function collapse
How about |Aup>|Bdown> + |Adown>|Bup>
May
2
awarded  Teacher
May
2
answered How does wind speed affect the velocity of light?
May
2
comment Find the exact angle as a function of time for a rod that swings on a frictionless axle
equation θ′2=ksin(θ) suffices and is the 'first integral' of equation θ″=kcos(θ). The equation derivations are correct, but mathematically you just can not solve the differential equations to a simple form.