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Dec
22
awarded  Popular Question
Nov
12
awarded  Yearling
Oct
3
comment Conservation of momentum in a baseball
Any moment of friction between the bat and the falling ball isn't going to stop the ball's downward motion. At most, since it's only on one side of the ball, it'll torque the ball, adding spin, and slightly decrease the downward momentum.
Mar
30
accepted Nonlinear Dirac's Equation?
Dec
10
awarded  Excavator
Nov
12
awarded  Yearling
Nov
5
answered Yukawa potential, which is correct?
Oct
8
answered What happens when Antimatter interacts with a photon?
Sep
26
awarded  Popular Question
Sep
23
comment How close can you get to lava before burning?
Nice description. I can imagine I am there.
Aug
9
awarded  Enlightened
Aug
9
awarded  Nice Answer
Aug
6
answered Is it true that the Schrödinger equation only applies to spin-1/2 particles?
Aug
6
comment How did they take photos of Jupiter?
The most direct source of information for this image is at ciclops.org/view/97/Io-Transiting-Jupiter CICLOPS is where all Cassini images are released to the public, simultaneous with NASA. You won't get any closer to the horse's mouth than that!
Jul
2
awarded  Curious
Jun
25
comment What is the minimum pressure of a medium for which a sound wave can exist?
Radio astronomers study density waves in the interstellar medium. Is there a lower limit to a sound wave's frequency?
Jun
9
awarded  Good Answer
Apr
9
answered Significant digits of time divided by 10
Apr
8
comment Geometrical interpretation of the Dirac equation
Search for papers by David Hestenes (Arizona State) - he has spent a lot of time on exactly this kind of question.
Mar
18
answered Maxwell's equations of Electromagnetism in 2+1 spacetime dimensions