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Physics · L3 · The Doppler Effect: Why a Passing Siren Changes Pitch · flowchart

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by @openstemUpdated Physics
⭐ Star or galaxy emits light at a known frequencyMoving toward or away from Earth?Light waves compress, shorter wavelengthLight waves stretch, longer wavelength🔵 Blueshift observed🔴 Redshift observedToward EarthAway from Earth

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