# Search results

1. ### Tesla's Experiment

How can I increase charge?
2. ### Tesla's Experiment

I am doing a very amateur version of Tesla's experiment of using potential difference between positively charged sky ( due to solar wind) and negatively charged earth. I took a piece of cardboard. Stapled aluminum foil to it to use as antenna. Stapled stripped end of wire to this foil and hung...
3. ### Is there a centre to the universe

A line is 1-dimensional object. You can imagine a line as part of huge 2-dimensional circle of infinite radius. Likewise a 2-D surface (an infinite plane) is a part of surface of a 3-D sphere of infinite radius. Similarly, an 3-D space is a part of surface of 4-D sphere (only for visualization...
4. ### Eigenvalues of a complex symmetric matrix

What I am trying to say is this. All hermitian matrices are symmetric but all symmetric matrices are not hermitian. Eigenvalues of hermitian (real or complex) matrices are always real. But what if the matrix is complex and symmetric but not hermitian. In hermitian the ij element is complex...
5. ### Eigenvalues of a complex symmetric matrix

Do you mean if a complex symmetric matrix is diagonizable, it will have real eigenvalues?
6. ### Eigenvalues of a complex symmetric matrix

Eigen values of a complex symmetric matrix which is NOT a hermitian are not always real. I want to formulate conditions for which eigen values of a complex symmetric matrix (which is not hermitian) are real.
7. ### Path of current functional

It prefers path of least resistance. Or it maximum current follows the path of least resistance upon division at a point.
8. ### Path of current functional

Current follows the path of least resistance or shortest path. I just want to prove this or rather reproduce it using calculus of variations. I just want to show it in a fancy way. I want help to form the FUNCTIONAL for it. Useful equations: I=dq/dt=nqvA R=rho*l/A Where v is drift velocity...
9. ### Russian Roulette and schrodinger's cat

We all the famous schrodinger's cat experiment and its outcomes which sound stupid in classic or macroscopic world. A similar thought came to my mind for Russian roulette game. Suppose you lock 2 game players in a room with a revolver of single shot and they start playing Russian roulette by...
10. ### Ripple equation

I want it in form y(x)
11. ### Ripple equation

I did a silly mistake there, I want 1D solution of it. :-P
12. ### Ripple equation

I want to formulate an approx 2D ripple equation μ(x,y). It should satisfy following: 1) it should have highest amplitude on y axis at x=0. It should be symmetrical about y axis. It should fade away at some x on both positive and negetive x axis symmetrically. Fading in a way of decreasing...
13. ### Linear Algebra for QM

I was going through Linear Algebra which is recommended as a prerequisite to Quantum Mechanics. The topic of LA is vast and deep. So I wanted to know which (specific) topics of LA should be covered as a prerequisite to QM.
14. ### Mathematical tools for quantum mechanics

No. I don't have any problem there. But I have not studied relativity yet. So should I go for relativity before QM?
15. ### Mathematical tools for quantum mechanics

To give reference to my level I would say I am almost done with calculus by Thomas and Finney.
16. ### Mathematical tools for quantum mechanics

Maybe my coursework is elementary.
17. ### Mathematical tools for quantum mechanics

Yes. Done with it.
18. ### Mathematical tools for quantum mechanics

Sure. I have a firm grip on high school mathematics and 2 semesters of engineering mathematics (and 3 sem is going on). It will be better if book/text is meant for I year or II year Undergraduates.
19. ### Mathematical tools for quantum mechanics

I am currently reading the book on quantum mechanics by N.Zettili. It's really a good book but has a lot of mathematical stuff which I am not able to absorb. There's a whole chapter on mathematical tools but it is difficult to.understand. Can anyone suggest me book or text on mathematics as...
20. ### Gravitational lensing due to earth

I am new to general relativity. 1)Can we mathematically calculate the amount of curvature or deviation ? 2) Can we calculate the angle at which sun light strikes the surface of earth (at a particular place) considering this bending (even if its is small) 3) Are you really sure, light...
21. ### Gravitational lensing due to earth

It is known that light from stars bend near surface of sun due to its mass. Similarly light will bend near earth's surface (may be insignificant due to less mass). My question is that sunlight that strikes earth's surface travels a straight path from sun or a curves near earth's surface ?
22. ### Physics Investment for Physics Degree from a foreign country

Plus I dont want to stop at MS, I want to continue at least till PHD.
23. ### Physics Investment for Physics Degree from a foreign country

Thanks for your advice. I can adapt easily to any lifestyle and I am also ready to have a shared room or dorm. And if in your opinion, Vienna is not that expensive and has a good faculty then why are you suggesting me to finish degree here in India, Can you please elaborate ?
24. ### Physics Investment for Physics Degree from a foreign country

I m not much tempted to study abroad, I mean its OK here but if given an opportunity it will be great. I am aware of the fact that I wont get a job after three years. Whatever I may go for (engineering of science), it is 100% sure that I will choose a teaching job. I am not at all interested in...
25. ### Physics Investment for Physics Degree from a foreign country

I am from India and I am currently studying Electrical Engineering from a good private college( with a considerable CGPA of 8.5). But I was never interested in Engineering. All I wanted to go for was Pure,Basic and theoretical Physics. Many "experienced" people advised me to do engineering and...

Thanks
27. ### Impact Parameter

Ok. I got the first part. But can you please elaborate "effective potential" stuff a little more.
28. ### Impact Parameter

Any problem of collision can be solved using four equations: Conservation of momentum and energy, impulsive forces and impact parameter (distance between center of masses of the particle taken perpendicular to velocity). I can solve problems using first three cases. But how to analyse a problem...

Thanks.

Thanks.