Question: A loop of wire is dipped in soapy water and held so that the soap film is vertical. (a) Viewed by reflection with white light,

A loop of wire is dipped in soapy water and held so that the soap film is vertical.

(a) Viewed by reflection with white light, the top of the film appears black. Explain why.

(b) Below the black region are colored bands. Is the first band red or violet?

(c) Describe the appearance of the film when it is viewed by transmitted light.


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