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Jul
18
comment How do the Einstein's differential equation of the curvature of spacetime come out of Einstein's field equation?
@Dimension10 I don't think it's deserving of a downvote either but a and b could just as easily be subscript and g R and T have not been declared so they could also be anything at all, really. It is better to write things out explicitly so that equations have meaning and the answer is more complete.
May
9
comment Why isn't temperature measured in units of energy?
I saw ;-) I do also see what you mean now about the degrees of freedom bit now. I think I misused the word depend there. I'll change it.
May
9
comment Why isn't temperature measured in units of energy?
@Dilaton I don't think energy and temperature are the same thing. This is what I am saying with the derivation. It is a bit of an aside but essentially it should just to show that temperature has a dimension of its own.
May
5
comment In the Lennard-Jones potential, why does the attractive part (dispersion) have an $r^{-6}$ dependence?
Good effort but I noticed you've introduced some notations and not really made a full statement about what they are. Could you fix it? Also why is you arrow like that over both the $\vec{O_1 O_2}$ expressions?
May
5
comment Why isn't temperature measured in units of energy?
Downvoter care to explain?
May
5
comment What is Convective acceleration of flow velocity?
How about making an attempt and showing people where you are stuck? It is much easier to help you if you do this. :-)
Apr
28
comment Limit of Fermi-Dirac distribution as $T$ goes to zero
Why the wikipedia link?
Apr
24
comment The notion of an adiabatic process in thermodynamics -vs- quantum mechanics
I see what you did there ;)
Apr
24
comment The notion of an adiabatic process in thermodynamics -vs- quantum mechanics
This sentence made me quite scared of life for a moment: "Adiabatic means quasi-static and isoentropic"
Apr
24
comment Why can't Humans run any faster?
free body diagram will get a +1
Apr
10
comment How to teach myself physics needed at undergraduate electrical engineer level?
@TerryMcCarthy glad I could help. Good luck with it.
Apr
8
comment How to teach myself physics needed at undergraduate electrical engineer level?
@Siva I agree ;-) but +1 because I don't think you should have got a downvote for yours.
Apr
8
comment How to teach myself physics needed at undergraduate electrical engineer level?
@DarenW rome wasn't built in a day. Siva is right and I hope I made this clear in my own answer. Getting your hands dirty is part of the process. Just as you don't get good at physics without practicing lots of problems, you also need to experiment with building speakers to get a practical sense of how it works.
Apr
8
comment Proof of quantum mechanical position uncertainty
@Fabian feel free to change it or elaborate.
Apr
8
comment How to teach myself physics needed at undergraduate electrical engineer level?
@BenCrowell that's his business, is it not? It would help to have some more information about what you have done so far. How much differential equations have you covered, for example?
Apr
8
comment Finding $\psi(x,t)$ for a free particle starting from a Gaussian wave profile $\psi(x)$
Can you put what you ran through maple 16?
Apr
8
comment Operators explaination and momentum operator in QM
What is $\langle x|\hat Om\rangle$ ? Is that a typo?
Mar
16
comment experimental technique for measuring temperature of an ant
The key word in the question is "measure".
Mar
6
comment I need help with the following Physics' questions
If you are stuck on a question it is best to start it and explain exactly which bit confuses you. If you can't be bothered to start the question yourself, what makes you think other people will be bothered to help you?
Mar
4
comment Material strain from spacetime curvature
How the hell has this not got a load of upvotes?