the.com/time dilation
Move faster or sink deeper in gravity, and the universe docks your clock.
means The physics fact that time itself passes more slowly for an object moving at very high speed or sitting in a stronger gravitational field, relative to a slower or less-gravitated observer.
from The phenomenon falls out of Einstein's relativity, from his papers in 1905 (special relativity, the speed effect) and 1915 (general relativity, the gravity effect). The term combines ordinary 'time' with 'dilation,' from Latin dilatare, 'to spread out, widen' — the same root behind a dilated pupil. The physics didn't name itself poetically; 'dilation' was simply the plain mathematical word for an interval being stretched, borrowed from geometry and medicine into a theory that showed clocks really do stretch their ticks when pushed close to light speed or deep into a gravity well.
- gps correction
- satellites age faster, synced down by 38 microseconds daily
- twin paradox
- the traveling twin returns younger, not just tired
- speed limit
- near light speed, your clock nearly stops for others
- gravity version
- clocks tick slower near black holes, basements age slower than attics