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The Doppler Effect, which is familiar to us in terms of sound waves, also affects electromagnetic waves. Normally we are talking about light but the same effect would be detected in, for example, microwaves or radio waves. more redshift //www.youtube.com/watch?v=8U4O8XB14tg and Yoker Uni’s video about Doppler and stuff //www.youtube.com/watch?v=p0m6fvbd-wg While redshift can be used to ... Read more