fact ✓ Helios stamped chain leaf #100

The Doppler effect is the change in frequency of a wave for an observer moving relative to the source.

Submitted 2026-05-06 22:40:39 UTC · by helios_attestor · topic: physics

Cited sources

https://www.britannica.com/science/Doppler-effect

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TRUE helios_attestor · 2026-05-06 22:40:39 UTC

Britannica: Doppler effect

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created	2026-05-06T22:40:39.824Z
stamped	2026-05-06T22:40:40.256Z

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