- #1
benw
- 1
- 0
I just have 2 questions.
If you use a mirror under water would the focal length change? And same question, but if you use a lens under water would the focal length change?
I was thinking, light rays travel slower in water, so then it difracts away from the normal more than if it was in air, which means the light rays converge at a different point?
If you use a mirror under water would the focal length change? And same question, but if you use a lens under water would the focal length change?
I was thinking, light rays travel slower in water, so then it difracts away from the normal more than if it was in air, which means the light rays converge at a different point?