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## Homework Statement

A sodium light source moves in a horizontal circle at a constant speed of 0.100c while emitting light at the proper wavelength of λ0=589 nm. Wavelength l is measured for that light by a detector fixed at the center of the circle. What is the wavelength shift λ-λ0?

## Homework Equations

Since the light source is always moving tangent to the center of the circle, I figured that I should use the doppler shift for transverse movement

**ƒ**

**= ƒ**

_{0}√1-β^{2}.## The Attempt at a Solution

Using the above and solving for λ, Δλ = 2.95nm. Is this correct?