Question

I am in need of help with my lab which is on diffraction and interference.

I set up a diffraction grating in the following fashion:

Replace the laser with an incandescent light. You should be able to see the visible spectrum appearing in the first order (the second order will most likely be too dim to see).

Calculate and report the shortest wavelength (?_s) and the longest wavelength (?_L) for the incandescent light. What is the physical significance of this range of wavelengths?

My data was as written:

L)- which is the distance between the flashlight and the grating : 24 cm

First order of the violet: 9.0 cm

First order of the red: 17.5 cm

(D) which is the distance between the grating and the wall: 42.0 cm

The incandescent light showed a spectra in the experiement. Ignore the rest of the spectrum when solving for red and then ignore the rest of the spectrum when solving for violet.

I would love a step by step process of how to do this with equations if possible.

I will rate the best and clearest answer! I appreciate the help and effort in this.

Answer 1