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OUR FINAL ( EXAM III ) Wednesday May 7 at 10:30 AM. Wave effects of light. Wave effects of light. Wave effects of light. Sharp spot. Screen view. Wave effects of light. Fuzzy spot. Screen view. Wave effects of light. bizarre spot. Can analyze wave effects using Huygens’ Principle.
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OUR FINAL (EXAM III) Wednesday May 7 at 10:30 AM
Wave effects of light Sharp spot Screen view
Wave effects of light Fuzzy spot Screen view
Wave effects of light bizarre spot
Can analyze wave effects using Huygens’ Principle Huygens' construction Each point on the line (wave front) acts like a little oscillator making spherical waves Add up the contributions from all these little waves at the point of interest
Two Slits – simplest case Huygens says
Freeze time: crests and troughs
Freeze time: crests and troughs +1 +1 -1 Wave sim http://phet.colorado.edu/en/simulation/wave-interference
Constructive interference: in general Equilateral triangle
Condition for constructive interference: Condition for destructive interference:
Example: Red light (630 nm) illuminates two slits 0.006 mm apart. At what angles will we see bright spots?
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