Recent content by jhon

any one can help ?

thanks but in what way? the excitation spectra or the emission spectra or both i'm using emission spectra and i calculate the Eg from wavelength of maximum intensity does my way correct and i found the Eg from urbach edge is begger than the Eg from Fluorescence(emission spectra) and i...

Can we measure the band energy gap from Fluorescence spectra? If yes, in what way? the excitation spectra or the emission spectra or both Is there a good reference on this subject specifically :smile:

does anyone can help me

hi i am study the optical effect of alpha radiation and gamma radiation on cr-39 detector i want good reference for uv/vis spectroscopy ( obsorption and Fluorescence) and any good reference alpha track effect

thnks HallsofIvy but the question doesn't give me the initial value

I can not how define way to solve these equation [SIZE="3"]x(l-x)y''+4y'+2y=o If anyone can help

jdwood983 and gabbagabbahey thanks for help

the second eq II ?? it's equale zero why??

in Schaum's Outline of Theory and Problems of Quantum Mechanics how did they got eq 15.5.7

thanks

In the cylindrical chamber, the voltage is applied to a very thin wire, a few mills of an inch in diameter, stretched axially at the center of the cylinder. The cylinder wall is usually grounded. The electric field is, in this case, E=\frac{V_{0}}{Ln(b/a)r} where a = radius of the central...

I want to do presentation in these subject So i want some reference and lecture note or anything help me to do that.

[SIZE="4"]Hi. I need some information about chirality and Helicity basic information it's application in Dirac equation and quantum field any notes or presentation good reference I'm still Beginner in these subject

these spot from what ?