UV light

Definition

UV light is a type of light that is invisible to the human eye. It is part of the electromagnetic spectrum, which is the range of all possible frequencies of light.

UV light is shorter than visible light but longer than X-rays. It is emitted by the sun and by some artificial sources, such as tanning beds.

UV light can cause sunburn, skin cancer, and other health problems. It can also damage plants and materials.

How can the word be used?

UV light can be used to kill bacteria and other microorganisms.

Different forms of the word

Noun:

UV light (ultraviolet light).
UV radiation (ultraviolet radiation).
UV rays (ultraviolet rays).

Adjective:

UV (ultraviolet).

Etymology

The word "UV" is an abbreviation of the Latin word "ultraviolaceus", which means "beyond violet". Ultraviolet light is a form of electromagnetic radiation that has a wavelength shorter than visible light but longer than X-rays.

The word "UV light" was first used in English in the early 20th century. It was used to refer to the light that was emitted by mercury vapor lamps.

Question

What is UV light?