for scene 15 of the video " Big Bang Blow-Out 1: Entropy versus Anti-entropy" by Rolf Witzsche
here for a larger image
A different principle applies to sound waves
When one throws an apple out of the window of a fast-moving train, the apple doesn't end up being stretched out before it impacts the ground. This is so, because an apple is an entity that remains as it is, regardless of the speed of the train that carries it. However, a different principle applies to sound waves.
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Published by Cygni Communications Ltd.
North Vancouver, BC, Canada - (C) in public domain - producer Rolf A. F.