A laser is a device that emits light through a process of optical amplification based on the stimulated emission of electromagnetic radiation.

Dec 25, 2025 · Laser, a device that stimulates atoms or molecules to emit light at particular wavelengths and amplifies that light, typically producing a very narrow beam of radiation. The emission generally …

Lasers produce coherent light through a process called stimulated emission. The laser contains a chamber in which atoms of a medium such as a synthetic ruby rod or a gas are excited to a high …

May 24, 2025 · When you think of lasers, the mind might leap to sci-fi weapons, barcode scanners at supermarkets, or the pointer used during a professor’s lecture. But lasers are far more than just …

Mar 24, 2024 · At its core, a laser utilizes atoms of a chosen gas, liquid, crystal or semiconductor that can be stimulated to release uniform packets of light called photons. The emitted particles travel …

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Jan 25, 2024 · Although both words may sound identical when spoken, only laser is the correct spelling in standard English. In this article, we will explore the origin and meaning of the word laser, explain …

Sep 25, 2025 · Lasers are used for recording and retrieving information. They are used in communications and in carrying TV and internet signals. We also find them in laser printers, bar code …

Nov 28, 2024 · Lasers are amazing light beams powerful enough to zoom miles into the sky or cut through lumps of metal. Although they seem pretty recent inventions, they've actually been with us …

Apr 27, 2025 · “Laser” or “lazer”? We break down the most common spelling errors and explain why only one spelling is correct.