
An example of this is the “Doppler shift.” Doppler shift is what makes a car sound lower-pitched as it moves further outdoor(a). As it turns out, a special version of this everyday life result applies to light as well. If an astronomical object is moving away from the Earth, its light will be shifted to longer (red) wavelengths. This is significant because this theory indicates the speed of recession of galaxies and...If you want to get a honest essay, order it on our website: Orderessay
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