the.com/precession
a spinning top's slow, dizzy confession that even gravity can't make it fall gracefully.
means the gradual wobble of a spinning object's axis, traced out in a cone instead of staying fixed.
from from latin praecedere, to go before — astronomers first clocked it in the slow drift of equinoxes, noticed by hipparchus around 130 BCE, long before anyone understood torque.
earth wobbles tooaxis traces a full circle every 26,000 years
pole star driftspolaris wasn't always, won't stay, the north star
gyroscopes exploit itphones and missiles use precession to sense orientation
counterintuitive physicspush a spinning wheel, it turns sideways, not down