Recent content by nez

Precession cone from xy plane to z axis is spin-spin relaxationT2(exchange of energy b/w nuclie spins) after 90o pulse applied to spin system. This T2relaxation is insuffecient to detect practical useful decaying signal, but when 180o pulse is applied, in which magnetic moment will take...

"it is based on an "unphysical" assumption of reflection" Not like that...There is real reflection, in the sense that the combined scattering of x-rays from crystal planes can be looked upon as reflections from these planes. At certain glancing angles, these reflections are in phase and...

You are right...but that takes you back to Laue refraction equation, a few months before Bragg's equation and its more complicated. It was Bragg's assumption to treat diffraction as reflection from lattice planes which led him to the simpler well known condition.

X-ray diffraction takes place only when a reciprocal lattice point lies on Ewald's sphere of reflection.Hence photographic record of the diffracted x-ray beams is nothing but a photographic record of the reciprocal lattice. Once you learn the graphic representation of Bragg's law in terms of...

X-ray diffraction takes place only when a reciprocal lattice point lies on Ewald's sphere of reflection.Hence photographic record of the diffracted x-ray beams is nothing but a photographic record of the reciprocal lattice. Once you learn the graphic representation of Bragg's law in terms of...

Thank you very much malawi glenn. I was looking for this answer. It was the book's printing mistake.

Sorry for misleading.The expression I know for calculation is t=10^-21×10^7.85E sec, where E=19.0-0.36Z^2/A, but I couldn't get the answer (10^-14)sec!

I will rephrase my question: According to liquid-drop model scientists have calculated the time(10 to the power of -14)sec for the first splitting of U-235 after being bombarded by neutron.How did they do it?

How can the time of binding energy be calculated?If so how long does it take to form deuteron nucleus?