Alexander Bryzgalov

6 Questions 12 Answers 0 Followers

Questions related from Alexander Bryzgalov

What are the books to study General Physics at university in English?

I would like to know, which books are internationally recognized for studying Mechanics, Molecular Physics, Waves, Electricity and Magnetism, Optics and Atomic Physics. Russian favorite authors...

15 August 2017 6,794 7 View

What the analytical formula for the integral which is consisted of two Bessel functions product? The argument of BesselJ contains Cosh function

For the validation purporses I need to know any analitical formula of the integral (see the picture) I have tried to find something in different Tables of integrals like Gradshteyn and Ryzhik......

04 August 2017 6,654 0 View

Is the order of coordinates important in the calculus of tensors?

For example, if I use spherical coordinates, r is X1, theta is X2 and phi is X3. But could I use, for example, phi as X1, theta as X2 and r as X3 in the calculus of tensors?

23 March 2015 7,094 5 View

What is the best way to approximate mixed derivative?

I try to solve numerically the differential equation with mixed derivative. I found one possibility for the mixed derivative like y(i+1,j-1)-y(i,j-1)-y(i-1,j+1)+y(i-1,j). But may be there are...

06 September 2014 9,212 7 View

Is scalar product is equivalent in different coordinates?

For example, I have two vectors A and B in 2D rectangular coordinates (x,y). I can calculate the scalar (dot) product as (A,B)=Ax Bx + Ay By. In polar coordinates (r,phi), it will be (A,B) = Ar Br...

01 January 1970 5,032 2 View

Do we have restrictions for the second spatial derivative of the wave function since it directly affected by potential?

As example let's consider very simple task: the solution of one-dimensional stationary Schrodinger equation with step-function potential: $V(x) = 0$ if $x0$ (see...

01 January 1970 5,657 8 View