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 …

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 …

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 …

Jan 1, 2026 · Confused between laser or lazer? Learn the correct spelling, origin, meaning, and examples in this simple grammar and usage guide.

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 …

Jan 6, 2026 · A laser is an intense beam of light. In surgery, lasers can be used to create heat energy or to cut or sculpt. Ophthalmologists use lasers to treat certain eye problems, including glaucoma, diabetic

Frequently Asked Questions about Lasers. What are lasers used for? Lasers are used for a variety of purposes including pointing out objects during a presentation, aligning materials at ...

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 …

A laser is created when electrons in the atoms in optical materials like glass, crystal, or gas absorb the energy from an electrical current or a light. That extra energy “excites” the electrons enough to move …