Recent content by Mahasweta

according to sommerfield quantization rule "for any physical system in which the co ordinates are periodin functions of time,there exist a quantum condition for each coordinate(e.g in bohrs heory angular momentum is quantised)" then why there is no quantization rule in planetary motion but the...

But in case I want some approximate numerical value of the wavelength that can pass without any diffraction effect? What should I do?

[b]1. Two towers built on hills are 50 km apart and the line joining those passes above a hill midway between them. what is the longest wavelength of radio waves which can be sent between the towers without serious diffraction effects caused by the central hill? [b]2. Is the width of the...

[b]1. A sinusoidal progressive pulse is generated on a string. The pulse is moving in positive x-axis. [b]2. What will be motion of the particles on the pulse. [b]3. Points in the front part moving towards positive y-axis and the rear part points will move along negative y axis.

I meant that for a particular potential how do I come to know that among a set of wave functions for that potential which one is non-node bound state?

[b]1. How can I solve the Schrodinger equation for a potential V(x)= A sech^2(αx) ? How do I come to know that whether sech(αx) is a non-node bound state of the particular or not? [b]2. p^2/2m + V(x) = E [b]3. exp(kx)[A tanh(αx) + C]