Lecture 29

# Lecture 29 - End game notes The Final Exam is Friday, May...

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End game notes • The Final Exam is Friday, May 13 at 7:30AM. I will reserve one problem and up to five conceptual questions on the final for topics in interference phenomena . The remainder of the test will be drawn from small modifications to problems and questions from Quizzes 1-5. • To help prepare for this, we will have an optional “ valuated review exercise” is Friday May 7 during e evaluated review exercise this Friday, May 7 during the quiz time. This will be a scantron-only exercise administered like a “Quiz 6” and scored out of 100 points. This score can replace one of your two lowest quiz scores on the final grade. e’ll end early today for eVals We ll end early today for TeVals.

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he peculiar arithmetic of waves The peculiar arithmetic of waves • If we added two identical mechanical objects together, ay baseballs the result is clear cut: 1 baseball + 1 say baseballs, the result is clear cut: 1 baseball + 1 baseball = 2 baseballs (1+1=2). • Waves add in a very different way. Two identical waves + = can add together to produce a third wave with an intensity that is anywhere from 4× higher (constructive terference 1+1=4!) to × igher (destructive interference,1+1 4!) to 0 higher (destructive interference, 1+1=0!) to anything in between (mix of constructive and destructive interference).
reference point: baseballs through a slit A reference point: baseballs through a slit • If we throw a stream of baseballs at a slit in a wall, the

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## Lecture 29 - End game notes The Final Exam is Friday, May...

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