ultraviolet light
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Definition
Noun: * Electromagnetic radiation with a wavelength shorter than that of visible light but longer than X-rays: "Ultraviolet light" refers to a type of invisible radiation from the sun or artificial sources, with wavelengths approximately between 10 and 400 nanometers. It is often abbreviated as UV light.
Usage
- "Ultraviolet light" is a non-count noun. It is used to describe the radiation itself as a general phenomenon or type.
- It is commonly used in scientific, medical, and everyday contexts related to sunlight, health, and technology.
Examples
- Noun:
- The sun emits ultraviolet light, which can cause sunburn.
- Some insects can see ultraviolet light, which is invisible to humans.
- The bank uses a special lamp to check for security marks with ultraviolet light.
Advanced Usage
- "to be exposed to ultraviolet light": to come into contact with UV radiation.
- Prolonged exposure to ultraviolet light can damage the skin.
- "ultraviolet light irradiation": the process or treatment of applying UV light.
- Ultraviolet light irradiation is used to disinfect water in some systems.
Variants and Related Words
- Ultraviolet (UV) radiation (n): A more formal or scientific synonym for "ultraviolet light."
- UV light (n): A common abbreviation.
- Ultraviolet (adj): Used to describe things related to this type of light (e.g., , ).
Synonyms
- UV radiation: Electromagnetic radiation in the ultraviolet range.
- Black light: A common term for ultraviolet light, especially when it causes certain materials to fluoresce.
Related Phrases
- Ultraviolet index (UVI): A standard measurement of the strength of sunburn-producing ultraviolet radiation at a particular place and time.
- The weather report includes the ultraviolet index to help people plan sun protection.
Noun
- radiation lying in the ultraviolet range; wave lengths shorter than light but longer than X rays