Grating spectrometer?

Question

Explain how the 0th order, 1st order, 2nd order spectra are produced from a diffraction grating? (state the determining conditions).

Also, how many wavelengths are contained in the path-length difference between 1st and 4th order?

Answer 1

Ok it takes alot to speak accuartely but you may have look on this

http://www.home.uos.de/kbetzler/notes/gr...

http://www.physics.mun.ca/~cdeacon/labs/...

I prefer the second

I hope that it's what you want