Solving Diffraction Grating Angle: Can it be 90°?

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SUMMARY

The discussion centers on the diffraction grating equation, d sin θ = nλ, and the possibility of the diffraction angle θ being 90°. Participants confirm that while the equation allows for θ to be 90°, it raises questions about the location of the maximum intensity. The consensus indicates that if θ were 90°, the maximum would theoretically occur at infinity, which is not practically observable.

PREREQUISITES
  • Understanding of the diffraction grating equation (d sin θ = nλ)
  • Basic knowledge of wave optics and interference patterns
  • Familiarity with the concept of maxima in diffraction
  • Knowledge of the implications of angles in physical optics
NEXT STEPS
  • Research the implications of maximum intensity in diffraction patterns
  • Explore practical applications of diffraction gratings in optics
  • Learn about the limits of angle measurements in wave phenomena
  • Study the behavior of light at critical angles in optics
USEFUL FOR

Students and professionals in physics, particularly those studying optics, wave phenomena, and diffraction patterns, will benefit from this discussion.

tenzinlhazey
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You know when you have diffraction gratings, you have to measure the angle between center and first order/maxima right? My question is: can the angle be 90°? Or is it always less than that?
d sin θ = nλ

Thank you!
 
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Hi tenzinlhazey and welcome to PF

:welcome:

According to the equation, the angle can be 90o. If that were the case, where would the maximum appear?
 
kuruman said:
Hi tenzinlhazey and welcome to PF

:welcome:

According to the equation, the angle can be 90o. If that were the case, where would the maximum appear?

Aww thank you :) yes, I m not sure where would the maximum appear. :/
 

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