- #1
Zomboy
- 6
- 0
1. Homework Statement
"A thin piece of metal foil of thickness 0.0700mm separates one end of two pieces of optically flat glass. The top sheet is 12.0cm long. Light of wavelength 529nm is normally incident on the glass. How many interference fringes are observed per cm in the reflected light?"
I don't really understand this question. I'm amusing that the 12cm glass pane is placed (possibly end on) on top of the second (infinitely large) pane, separated by an infinitely large sheet of (opaque/reflective) thin metal foil...
If someone could decode this question for me it would be much appreciated :)
"A thin piece of metal foil of thickness 0.0700mm separates one end of two pieces of optically flat glass. The top sheet is 12.0cm long. Light of wavelength 529nm is normally incident on the glass. How many interference fringes are observed per cm in the reflected light?"
I don't really understand this question. I'm amusing that the 12cm glass pane is placed (possibly end on) on top of the second (infinitely large) pane, separated by an infinitely large sheet of (opaque/reflective) thin metal foil...
If someone could decode this question for me it would be much appreciated :)