Wëssenschaft am Alldag
Why is the sky blue?
If wave speed is fixed, doubling frequency halves wavelength because v = fλ.
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Déi kuerz Äntwert
If wave speed is fixed, doubling frequency halves wavelength because v = fλ.
Wat geschitt wierklech?
Wëssenschaft bleift am Kapp, wann eng Definitioun mat eppes Moossbarem oder Beobachtbarem verbonne gëtt.
Hydrogen emits discrete spectral lines because electrons change between quantized energy states.
Wëssenschaft bleift am Kapp, wann eng Definitioun mat eppes Moossbarem oder Beobachtbarem verbonne gëtt.
E nëtzlecht Gedankebild
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Visible light interacts with molecules in the atmosphere. Shorter visible wavelengths are scattered more strongly, which is why the daytime sky usually looks blue.