Definition

Noun: - Invisible radiation with specific wavelengths: "Ultraviolet illumination" refers to electromagnetic radiation that exists in the ultraviolet (UV) range. Its wavelengths are shorter than those of visible light but longer than those of X-rays. It is a form of energy that is not visible to the human eye.

Usage

This term is used in scientific, technical, and industrial contexts to describe the specific type of radiation being emitted or utilized. - The laboratory uses ultraviolet illumination to sterilize the equipment. - Studying the effects of ultraviolet illumination on materials is crucial for developing better sunscreens.

Advanced Usage

• As a controlled source: The term often implies the radiation is being deliberately produced or applied for a specific purpose, such as disinfection, forensic analysis, or causing fluorescence in materials.
  • The counterfeit bill was easily detected under ultraviolet illumination.

Variants and Related Words

• Ultraviolet light (n): A more common synonym for ultraviolet radiation, often used interchangeably.
• UV radiation (n): An abbreviated form.
• Black light (n): A colloquial term for a source of long-wave ultraviolet illumination that causes certain materials to glow.

Synonyms

• UV light
• Ultraviolet radiation

Related Phrases

• Exposed to ultraviolet illumination: Subjected to UV rays.
  • The sample was exposed to ultraviolet illumination for one hour.
• Source of ultraviolet illumination: An object or device that emits UV radiation.
  • The microscope was fitted with a powerful source of ultraviolet illumination.

Noun

1. radiation lying in the ultraviolet range; wave lengths shorter than light but longer than X rays