ultraviolet

/ˌʌltrəˈvaɪələt/ /ˌʌltrəˈvaɪəlɪt/

Meanings

noun

Ultraviolet colour.

Examples :

"The blacklight made the fluorescent paint glow with ultraviolet. "

adjective

Of electromagnetic radiation beyond (higher in frequency than) light visible to the human eye; radiation with wavelengths from 380 nanometre - 10 nanometre

Examples :

"The sunscreen protects your skin from harmful ultraviolet rays. "

physics energy science frequency phenomena

Related Words

harmful adjective

/ˈhɑːmfl̩/ /ˈhɑɹmfl̩/

Of a kind likely to be damaging; injurious

"Wear a hat to protect your skin from harmful sunlight."

sunscreen noun

/ˈsʌnskrin/

A cream, to be spread on the skin, containing organic compounds that absorb, and/or titanium dioxide that reflects the sun’s ultraviolet radiation.

"I put on sunscreen before going to the beach to protect my skin from sunburn. "

visible adjective

/ˈvɪzəb(ə)l/

Able to be seen.

"When the sun rises, the world becomes visible."

nanometre noun

/ˈnænoʊˌmiːtər/ /ˈnænəˌmiːtər/

An SI subunit of length equal to 10-9 metres. Symbol: nm

"A virus is often measured in nanometres, making it too small to see with a regular microscope. "

frequency noun

/ˈfɹiːkwənsi/

The rate of occurrence of anything; the relationship between incidence and time period.

"The frequency of bus service has been improved from one every 15 to one every 12 minutes."

wavelengths noun

/ˈweɪvleŋθs/ /ˈweɪvˌlɛŋθs/

The length of a single cycle of a wave, as measured by the distance between one peak or trough of a wave and the next; it is often designated in physics as λ, and corresponds to the velocity of the wave divided by its frequency.

"Different colors of light have different wavelengths, with red light having longer wavelengths than blue light. "

radiation noun

/ɹaɪ.di.ˈaɪ.ʃən/

The shooting forth of anything from a point or surface, like diverging rays of light.

"heat radiation"

colour noun

/ˈkʌlər/ /ˈkʌlə/

The spectral composition of visible light

"Humans and birds can perceive color."

protects verb

/pɹəˈtɛkts/ /pɹoʊˈtɛkts/

To keep safe; to defend; to guard; to prevent harm coming to.

"Condoms are designed to protect against sexually-transmitted diseases."

electromagnetic adjective

/ɪˌlɛktroʊmæɡˈnɛtɪk/ /ɪˌlɛktrəʊmæɡˈnɛtɪk/ /iˌlɛktroʊmæɡˈnɛtɪk/ /iˌlɛktrəʊmæɡˈnɛtɪk/

Relating to electromagnetism

"The cell phone emits electromagnetic waves that allow us to communicate. "

fluorescent noun

/ˌflʊəˈɹɛsənt/ /flɔˈɹɛsɨnt/

A fluorescent light.

"The fluorescents hummed day and night."

blacklight noun

/ˈblækˌlaɪt/

A light bulb that emits ultraviolet light, usually used to create the illusion that anything white is glowing.

"The science classroom used a blacklight to reveal invisible ink messages written on the paper. "