UV: meaning, definitions and examples

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[juː viː ]

Definition

^{Context #1 | Noun}

science technology

UV stands for ultraviolet, which refers to a type of electromagnetic radiation with wavelengths shorter than visible light but longer than X-rays. It is commonly associated with its effects on skin and its use in sterilization processes. UV radiation is emitted by the sun and is used in various applications such as disinfection, fluorescence, and in some types of photography.

Synonyms

ultraviolet.

Examples of usage

Sunscreen can protect your skin from harmful UV rays.
UV sterilization is effective in killing bacteria.
The UV light emitted by the lamp is strong enough to cause damage.
Animals like bees can see UV patterns on flowers that humans cannot.
Many tanning beds emit UV radiation.

Interesting Facts

Etymology

The term 'ultraviolet' comes from Latin, meaning 'beyond violet', indicating that it has a shorter wavelength than visible violet light.
Ultraviolet light was discovered in the early 19th century when scientists started experimenting with prisms and sunlight.

Science

Ultraviolet light is divided into three types: UVA, UVB, and UVC, each with different effects on living organisms.
UVA rays are the longest and can penetrate deep into the skin, contributing to aging and skin cancer risk.

Health

Excessive exposure to UV rays can lead to skin damage, eye problems, and a weakened immune system.
Sunscreens often protect against UVB rays, which are primarily responsible for sunburn.

Pop Culture

In movies and comics, UV lights are often portrayed as weapons against vampires and other supernatural beings.
UV graffiti is a popular art form that only becomes visible under special black lights, adding intrigue to street art.

Environment

The ozone layer protects Earth by filtering out most harmful UV radiation from the sun.
Climate change is causing thinning of the ozone layer, leading to increased UV exposure on the Earth's surface.