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You are observing light interference from the top of a soap bubble that is resting on a countertop. The index of refraction of the soap bubble is n = 1.28. At this
moment, the reflection in the soap bubble has a wavelength of 4.91e-07 meters.
Soap Bubble
Your eye
White
Light
One
Color
d
What is the THINNEST film that can produce this color? d =
meters.

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