1,564 reputation
1530
bio website
location
age
visits member for 3 years, 9 months
seen Oct 6 at 12:28

Learning from scratch


Apr
23
accepted About the complex nature of the wave function?
Apr
23
revised How to think physically about basic “fields”
added 67 characters in body
Apr
23
asked How to think physically about basic “fields”
Apr
22
awarded  Nice Question
Apr
20
comment Supergravity calculation using computer algebra system in early days
Also for the record schoonschip developed by Martinus Veltman existed
Apr
20
comment How many bits are needed to simulate the universe?
@lagerbaer basic question: if you wish to encode an m parameter function over n points, why would it be $n^m$?
Apr
20
comment What is wrong with the De Broglie–Bohm theory a.k.a “Causal Interpretation” of quantum theory?
@dmckee I've flaggd your comment as I consider philosopher a not-very appraising term, short of an insult to a physics student, and plainly wrong in the context. Moreover, last question was closed after I had flagged it. After reading the answers, I realized that the topic was not as simplistic as I thought. I also suspect that I was the only one who asked for moderator attention on it. Asking for philosophical discussion is the last thing I would do.
Apr
19
comment Basic question about force and acceleration
Your velocity in reference to the accelerating frames doesn't change in either case
Apr
19
comment Phonons in non-crystalline media
@Anna v im not sure how disordered media is modeled, but to get a correct fit with specific heat at low temperatures, you would need a contiuous spectrum of frequencies bounded above by a threshold frequency. Ref: Debye model
Apr
19
comment Do Sears Physics and Berkeley Physics Series provide intuition?
Sears/Zeemansky and Resnick Halliday are better than Feynman lectures for an absolute beginner. Feynman lectures are best appreciated once you've already mastered the material from other sources, done problems etc.
Apr
19
comment What is wrong with the De Broglie–Bohm theory a.k.a “Causal Interpretation” of quantum theory?
@dmckee Clarification: as OP of earlier question, I had asked a plain question to correct my understanding from a reading. It did not ask for a philosophical discussion, and what happened later was really beyond me.
Apr
19
comment Phonons in non-crystalline media
@anna v it is incorrect that frequency can take Any value.
Apr
19
answered Need some help interpreting a formula inspired from Coulomb's law
Apr
18
revised How do I correctly interpret $\rho = \psi_1^* \psi_2$?
added 87 characters in body
Apr
18
comment If I put a ping pong ball in a vacuum, would it pop?
@NickLarsen I think it will pop. Check edit in my answer.
Apr
18
comment If I put a ping pong ball in a vacuum, would it pop?
@NickLarsen now that will involve quantitative calculations. You must know the tensile strength of the material that makes the shell of ball. If the pressure inside is approximately atmospheric so it doesn't collapse or pop in air, then you would need to know the pressure of the partial vacuum (0 Torr in case of full vacuum, if that's possible), and find if the material can withstand such a pressure difference. In general, you can safely say that normal materials such as plastic wouldn't withstand the pressure gradients between say, a sputter ion vacuum on one side and air.
Apr
18
comment If I put a ping pong ball in a vacuum, would it pop?
if it has air inside, yes.
Apr
18
revised How do I correctly interpret $\rho = \psi_1^* \psi_2$?
added 4 characters in body; added 36 characters in body
Apr
18
awarded  Promoter
Apr
18
comment How do I correctly interpret $\rho = \psi_1^* \psi_2$?
@David actually i corrected that factor after seeing your comment. I was copy pasting my intitial equation's latex to be quicker, and I had left the $i\hbar$ factor sticking to the $\partial_t(\cdots)$ so thanks :-P