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bio website manishearth.github.io
location Mumbai, India
age 21
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I am an engineering student who loves the sciences, especially physics.

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Apr
21
comment Infinitely charged wire and Differential form of Gauss' Law
@Pygmalion: Potential $\neq$ self-energy. That's all, in my opinion. Yes, both are infinite in this case :)
Apr
21
comment Infinitely charged wire and Differential form of Gauss' Law
@adam both the potential and the self energy are infinite. The integral in the OP is for self energy, not potential. The potential is $\int E\rm dr=\infty$ in this case.
Apr
21
revised Infinitely charged wire and Differential form of Gauss' Law
added 233 characters in body
Apr
21
comment Infinitely charged wire and Differential form of Gauss' Law
@Adam oh whoops. Alright, the wire is equipotential(though its potential taking infinity as a datum is infinite). For a general object, this does not hold though.
Apr
21
comment Infinitely charged wire and Differential form of Gauss' Law
@Pygmalion Potential=energy to get a test charge from infinity to specified point. Self energy=energy reqd to create system. Potential is for a point, self energy is for a system. this gets even morcomplicated when we have multiple objects, it can be split into self energy, interaction energy, and you will still have potentials at every point, independant of the other two
Apr
21
revised What is the return probability for Brownian motion in three dimensions?
added 2 characters in body; edited tags; edited title
Apr
21
revised Infinitely charged wire and Differential form of Gauss' Law
edited title
Apr
21
answered Infinitely charged wire and Differential form of Gauss' Law
Apr
21
reviewed Approve Infinitely charged wire and Differential form of Gauss' Law
Apr
21
comment A person weighing 100 N stands on some bathroom scales in a lift. If the scales show a reading of 110 N, which way is he going
let us continue this discussion in chat
Apr
21
comment A person weighing 100 N stands on some bathroom scales in a lift. If the scales show a reading of 110 N, which way is he going
Open a new FF window. Drag the titlebar and bring your mouse to one side of the screen. The window should take up half the screen space. Do the same to the other window (other side). More on this
Apr
21
revised Again about all-win lottery
added 5 characters in body
Apr
21
revised How do we see different colours?
tag light removal
Apr
21
comment A person weighing 100 N stands on some bathroom scales in a lift. If the scales show a reading of 110 N, which way is he going
then open the question in a new window, and tile the pages on your screen so they show up side by side. Are you on Windows 7(cos this is easy from Win7)
Apr
21
comment A person weighing 100 N stands on some bathroom scales in a lift. If the scales show a reading of 110 N, which way is he going
No, they appear in the "compose answer" box. Try it, start writing an answer for a random question. Wait a while (draft saving is every 30 seconds IIRC), close the page. Come back whenever you want, your half-written answer will still be there, at the bottom of the page in the answerbox. The same applies for questions, but you can have only one question draft at a time (since there's only one "ask question" page, but there are many pages with an answerbox)
Apr
21
comment solution of schrodinger equation - infinite solutions?
@DavidZaslavsky: For some reason I didn't get pinged for that. I'm rather shaky in QM, but I tried my best to write an answer that explained it at a different level than the others. Also: I have no clue what a quotient group is :/
Apr
21
comment A person weighing 100 N stands on some bathroom scales in a lift. If the scales show a reading of 110 N, which way is he going
You do know that answers are saved as drafts--you can write half an answer and come back later (to the same question) to improve it without submitting. Also, you can always open the question in another tab.
Apr
21
answered solution of schrodinger equation - infinite solutions?
Apr
21
comment A person weighing 100 N stands on some bathroom scales in a lift. If the scales show a reading of 110 N, which way is he going
Uhh, don't do that, write a complete answer and then submit. Unless you've already written a sizeable chunk which self-sufficiently solves the problem, and leave a note that you will add more later.
Apr
21
answered A person weighing 100 N stands on some bathroom scales in a lift. If the scales show a reading of 110 N, which way is he going