- #1
astru025
- 163
- 0
1. Homework Statement
You are coating a glass lens of index of refraction 1.6 with a film of material of index of refraction 1.7. You start with the thinnest film possible that creates a strong reflection for 610 nm light. You gradually increase the film thickness until you again get strong reflection. What is the thickness of the film now?
2. Homework Equations
Wavelength in film = wavelength in a vacuum / index of refraction of film
610 nm / 1.6 = my answer? Not sure if this is correct.
3. The Attempt at a Solution
Just need to be pointed in the right direction! Really am not sure where to start for this problem. Any help would be really nice!
You are coating a glass lens of index of refraction 1.6 with a film of material of index of refraction 1.7. You start with the thinnest film possible that creates a strong reflection for 610 nm light. You gradually increase the film thickness until you again get strong reflection. What is the thickness of the film now?
2. Homework Equations
Wavelength in film = wavelength in a vacuum / index of refraction of film
610 nm / 1.6 = my answer? Not sure if this is correct.
3. The Attempt at a Solution
Just need to be pointed in the right direction! Really am not sure where to start for this problem. Any help would be really nice!