Why do we need collimated light on a diffraction grating?

kasibug1v 2022-09-29 Answered
Why do we need collimated light on a diffraction grating?
You can still ask an expert for help

Expert Community at Your Service

  • Live experts 24/7
  • Questions are typically answered in as fast as 30 minutes
  • Personalized clear answers
Learn more

Solve your problem for the price of one coffee

  • Available 24/7
  • Math expert for every subject
  • Pay only if we can solve it
Ask Question

Answers (1)

Iademarco11
Answered 2022-09-30 Author has 10 answers
If the beam wasn't collimated then light with different wavelengths but from different parts of the source, arriving at different incidence angles, would be diffracted in the same direction.
This would spoil your wavelength discrimination, contradicting the whole purpose of a diffraction grating.
Did you like this example?
Subscribe for all access

Expert Community at Your Service

  • Live experts 24/7
  • Questions are typically answered in as fast as 30 minutes
  • Personalized clear answers
Learn more