Calculate the minimum thickness of an oil slick on water that appears blue when illuminated by white light perpendicular to its surface. Take the blue wavelength to be |470 nm and the index of refraction of oil to be 1.40.
Calculate the minimum thickness of an oil slick on water that appears blue when illuminated by white light perpendicular to its surface. Take the blue wavelength to be |470 nm and the index of refraction of oil to be 1.40.
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Hint 1: Since water has a
lower index of refraction
then oil, the reflection off
the back surface does not
get inverted.
Hint 2: What is the
minimum thickness that
allows an inverted reflection
from the top surface to
interfere constructively with
a non-inverted reflection
from the back surface?
The picture must be included
Answer must include
correct units
Transcribed Image Text:Calculate the minimum thickness of an oil slick on
water that appears blue when illuminated by white light
perpendicular to its surface. Take the blue wavelength to be
|470 nm and the index of refraction of oil to be 1.40.
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