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Lecture 17: Chapter 35 (Diffraction)

Thin film interference

Consider two identical microscopic slides in air illuminated with light from a laser. The bottom slide is rotated upward so that the wedge angle gets a bit smaller. What happens to the interference fringes?

spaced farther apart
spaced closer together
no change

Thin film interference

Two identical microscope slides in air illuminated with light from a laser are creating an interference pattern. The space between the slides is now filled with water (n = 1.33). What happens to the interference fringes?

spaced farther apart
spaced closer together
no change

-  ⇤ ← Revision 4 as of 10:28AM, Mar 06, 2014 → 
  Size: 426
  Editor: Sam
  Comment:
+   ← Revision 6 as of 10:34AM, Mar 06, 2014 → ⇥
  Size: 823
  Editor: Sam
  Comment:
-Deletions are marked like this.
+Additions are marked like this.
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-<<c>> <<lia(slides_1.png, align = center, width = 40%)>> <<c(1)>>
+<<c>> <<lia(slides_1.png, align = center, width = 33%)>> <<c(1)>>
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+== Thin film interference ==

Two identical microscope slides in air illuminated with light from a
laser are creating an interference pattern. The space between the slides is now filled with water (n = 1.33). What happens to the interference fringes?

<<c>> <<lia(slides_2.png, align = center, width = 33%)>> <<c(1)>>

 A. spaced farther apart
 A. spaced closer together
 A. no change