El efecto Doppler: descubrimiento y experimentos del siglo XIX

The video explains the Doppler effect, a phenomenon where the pitch of a sound changes as the source moves relative to an observer. Named after Christian Doppler, the effect was first demonstrated in 1845 using a steam train and trumpeters. The BBC recreated this experiment in 1978, showing how the pitch changes for observers on the ground and on the train. The video also explains how sound waves behave when the source approaches or moves away, affecting frequency and wavelength. The Doppler effect applies to all wave types, including light, making it a fundamental concept in physics.

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