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Science
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Observe and measure.
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A simple question,
when?
Born, discovered, when did or will it, etc.
Doppler Effect Observed for Stars
1848
Science Story
Light Waves.
Doppler Effect for Sound and Light
1842
Science Story
Waves.
Max Planck
1858
Lived from 1858 to 1947, aged 89.
Science Story
Max Planck.
Chapter 1 Quote Attribution Clarification
Science Story
Sagan, Tyson, et al!.
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