Doppler effect — soundwaves emitted by a stationary source, a moving source, a source moving at the speed of sound (mach 1), and a supersonic source.
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Doppler effect — soundwaves emitted by a stationary source, a moving source, a source moving at the speed of sound (mach 1), and a supersonic source.
It’s Always Sunny in Philadelphia | Dayman
(Source: paw--mccatney)
SEE YOU GUYS AT THE ELECTRIC CHAIR
(Source: unendingtragedy)