laser

Thân thiện

A scientist uses a laser to point at a star chart.

Definition

Noun: 1. A device that generates an intense, narrow beam of coherent light: A laser is an optical device that produces a very strong, focused, and single-colored beam of light where all the light waves are aligned. This is achieved through a process called "light amplification by stimulated emission of radiation," which forms the acronym LASER.

Usage

The word "laser" is used to refer to the physical device or technology itself. It is a countable noun. - The surgeon used a laser for the precise medical procedure. - Lasers are common in manufacturing, communication, and entertainment. - The pointer emitted a bright red laser beam.

Examples

• Scientific: "The laboratory's new laser can cut through diamond."
• Medical: "Laser eye surgery has become a very common operation."
• Everyday: "The cat chased the red dot from the laser pointer."

Advanced Usage

• As a modifier (attributive noun): "Laser" is frequently used before another noun to describe a related technology, tool, or process.
  • laser printer, laser surgery, laser guidance system, laser show
• Verb (informal, often "laser in on"): To focus very intently on something. This is a metaphorical extension of the word's precision.
  • The detective lasered in on the key piece of evidence.
  • She can laser her focus when studying.

Variants and Related Words

• Lase (verb): To function as a laser; to emit coherent light.
  • The crystal began to lase when pumped with energy.
• Laserlike (adjective): Extremely precise and focused, like a laser beam.
  • He has a laserlike concentration.

Synonyms

• Optical maser (technical, historical term)
• Coherent light source (descriptive)

Related Phrases and Idioms

• Laser-focused: Extremely concentrated and attentive.
  • You need to be laser-focused to solve this complex problem.
• Laser beam: The narrow beam of light produced by a laser. Often used metaphorically for intense focus.
  • He stared at the document with laser-beam intensity.

Học thuật

Noun

1. an acronym for light amplification by stimulated emission of radiation; an optical device that produces an intense monochromatic beam of coherent light

Từ đồng nghĩa

• optical maser