ultraviolet (UV) radiation

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5 Terms

1
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what is ultraviolet radiation?

produced by the Sun

2
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where is ultraviolet radiation used?

  • fluorescence

    • fluorescent lights

  • security pens

    • under UV light, ink will glow

  • tanning

    • UV lamps

3
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how do fluorescent lights work?

  • generate UV radiation, which is absorbed

  • UV re-emitted as visible light

    • by phosphor inside bulb

4
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what are the advantages of fluorescent lights?

  • energy-efficient

    • good when a light is needed for long periods

5
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what are the disadvantages of UV radiation?

  • overexposure is dangerous

    • can cause skin to age prematurely

    • increase risk of skin cancer