Problem: As a soap bubble with n = 1.333 evaporates and thins, reflected colors gradually disappear. What are(a) the bubble thickness just as the last vestige of color vanishes and(b) the last color seen?

FREE Expert Solution

The condition for constructive interference for the given condition is:

2ηd=(m+12)λ

m = 0

This implies that:

2ηd = (1/2)λ

d = λ/4η

The minimum bubble thickness that will produce interference color is:

dmin=λmin4η

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Problem Details

As a soap bubble with n = 1.333 evaporates and thins, reflected colors gradually disappear. What are

(a) the bubble thickness just as the last vestige of color vanishes and

(b) the last color seen?

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