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I am a physicist,


2d
comment What distance does one travels in his lifetime?
you might also add that our galaxy moves at close the speed of light from a galaxy at the edge of the observable universe. To answer your question you need to first fix a reference frame, that is, decide what observer is at rest.
Aug
30
answered What measurement of time is so small that it qualifies as quantum?
Aug
28
awarded  Altruist
Aug
27
awarded  Investor
Aug
27
answered Are the implications of an infinite universe necessarily so unsettling
Aug
22
revised Is there a quantity measured in kilogram seconds?
added 127 characters in body
Aug
22
comment How can a glass rod become charged if it is an insulator?
Thanks, I restricted the answer to the case of removing the electrons because it was directly related with the OP question.
Aug
22
answered Is there a quantity measured in kilogram seconds?
Aug
22
answered How can a glass rod become charged if it is an insulator?
Aug
6
comment How much of the sky is visible from a particular location?
do you mean only for objects located at large distances? Because as I put in my answer it not the same case if you are considering something closer, such as artificial satellites
Aug
3
revised How much of the sky is visible from a particular location?
added 3 characters in body
Aug
3
answered Neil deGrasse Tyson says that electrons “teleport” between energy levels?
Aug
3
answered How much of the sky is visible from a particular location?
Jul
30
revised How “unnatural” is the universe?
deleted 3 characters in body
Jul
30
answered In scattering, how does a particle 'know' which direction it is being illuminated from?
Jul
30
answered How “unnatural” is the universe?
Jul
21
comment Boltzmann Distribution of Electrons in Confining Potential
I erased my answer because I am not really sure what is going on. I'll write an answer back if I can find an explanation.
Jul
17
comment Can an electron spontaneously be emitted/ejected from a hydrogen atom?
@annav But it is not due to the tunnel effect, just to the tail of the probability distribution
Jul
17
comment Can an electron spontaneously be emitted/ejected from a hydrogen atom?
yes exactly!...
Jul
17
answered Does the entropy of an adiabatically isolated system stays the same after we decrease/increase the pressure?