the.com/light switch
the unsung dictator of every room, flipping reality with a fingertip.
means A small mechanical control mounted on a wall (or device) that opens or closes an electrical circuit to turn lighting on or off.
from A transparent compound of two old workhorses. "Light" descends from Old English lēoht, kin to German Licht and ultimately a deep Indo-European root for brightness and burning. "Switch" is the surprise: it first meant a thin, flexible riding-whip or twig (the kind you'd switch a horse with), origin uncertain but possibly borrowed from a Low German or Dutch word for a swishing rod. When railways needed a lever to flick trains from one track to another, that whippy "switch" lent its name to the motion — and from track-switching the word leapt to electricity, where flicking a contact one way or the other made the modern sense. "Light switch" simply married the two once homes got wired.
- flip count
- average switch survives over 10,000 flicks
- up means on
- convention reversed in the UK and beyond
- first one
- toggle switch patented in 1916 by William Newton
- satisfying click
- that snap is a spring-loaded quick-make mechanism
the mercury switch — invented by william staite in 1884, used mercury in a glass tube to complete circuits
the toggle switch — popularized by leviton in the 1950s, became the standard wall switch in north american homes