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Big Bang - Coggle Diagram
Big Bang
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Red Shift
the displacement of spectral lines toward longer wavelengths in radiation from distant galaxies and celestial objects. This is interpreted as a Doppler shift that is proportional to the velocity of recession and thus to distance.
Droppler effect
Quick Recap
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When a source is moving (let’s say to the right), the waves bunch up closer in the direction of travel (again, to the right). The waves spread out on the opposite side (the left)
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Bunched light waves have a tighter wavelength (closer to blue/purple). Stretched lightwaves have a looser wavelength (closer to red)
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