Hi Don,

After a very long time, I felt that I would again entered in to my class room in my
college and my respected lecturers appeared in my mind after a long time.

But, though your narration touched about Doppler effect and analysis of electromagnetic
spectrum in deep, I do not understand what is the outcome of your narration to my question
that "what happened to sun light when it enters into earth's atmosphere during normal time,
devastating quake period and after that on earth which is having great magnetic field, with
proof."

Hope you (or any one) will teach this poor student again to understand better.

Shan