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Interference/Diffraction Shadows

  • Thread starter Aeighme
  • Start date
  • #1
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Homework Statement


At 11:00hrs a vertical stick in air, 1.8 m long, casts a shadow 1.2 m long. If the same stick is placed at 11:00hrs in air in a flat bottomed pool of salt water half the height of the stick, how long is the shadow on the floor of the pool? (For this pool, n = 1.56.)


Homework Equations


Not sure...=/


The Attempt at a Solution


Don't know were to start >.<
 

Answers and Replies

  • #2
tiny-tim
Science Advisor
Homework Helper
25,832
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Don't know were to start >.<
Hi Aeighme! :smile:

Start by calculating the angle of the sun above the horizon. :smile:
 

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