the.com/blueshift
When something's rushing toward you, its light lies about how calm it is.
means A shift of light (or any wave) toward shorter, bluer wavelengths because its source is moving closer to the observer.
from Built from 'blue,' the short-wavelength end of the visible spectrum, plus 'shift,' describing displacement — coined in the era of early 20th-century astrophysics alongside its better-known sibling 'redshift,' both terms borrowed from the Doppler effect first worked out for sound and then applied to light by astronomers studying the motion of stars and galaxies.
- opposite of
- redshift, the sound of things leaving
- cause
- source and observer closing the distance
- famous example
- andromeda galaxy, inbound, no brakes
- not about
- color of light bulbs, despite the name