Episode 702: Red Shift

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Produced by the Institute of Physics, these activities demonstrate the Doppler effect.

Using sound and microwaves, the activities illustrate how changes in wavelength of spectral lines allow us to determine the motion of astronomical objects relative to ourselves.

The activities include:
* explaining the red shift
* the Doppler effect
* Doppler effect with sound and microwaves
* wave speed and frequency
* binary stars

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