the.com/laser beam
Light that got disciplined, marched in a straight line, and never looked back.
means A narrow, high-intensity beam of light in which all the waves move in lockstep, letting it travel far without spreading out or losing focus.
from "Laser" started life as an acronym — Light Amplification by Stimulated Emission of Radiation — coined in the late 1950s when physicists worked out how to make light waves march in perfect unison instead of scattering every which way. The term "beam" is much older, from Old English 'beam' meaning tree or ray of light, a word that once named timber before it named light, since both suggested something long, straight, and solid. The acronym stuck so well that most people now say 'laser' without ever knowing it once stood for a sentence.
- name origin
- acronym for light amplification by stimulated emission of radiation
- first build
- 1960, Theodore Maiman, a ruby crystal rod
- secret weapon
- every photon moves in identical lockstep, called coherence
- humble job
- reads barcodes before it ever cut steel