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Thread: Ultraviolet Light

  1. #1 Ultraviolet Light 
    Forum Freshman
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    Hello. I realise that I may not be helped as I am not a regular here, but here I go.

    I am having trouble finding some good information about Ultraviolet light. I need to know at least the following for my project:
    • Speed of travel
    • Frequency range
    • Wavelength range
    • Uses
    • Properties
    • Dangers
    • Safety precautions
    • Interesting facts or information

    I am not asking anyone to list these things out (but I would appreciate that ), but I would really be happy if someone could point out a few good sites that have this information. Thanks a lot in advance.


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  3. #2  
    Forum Junior Twaaannnggg's Avatar
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    Leeeet's seeeee:
    -Speed of travel.....hmmmmmm what might that be. Oh yeah, it's c (at least with a good apporximation) and that is.....look it up in some encyclopedia
    -Wavelength range: depends on the definition but starting below the visible range and goes down to extreme UV so let's say 280nm to 10 nm
    -Frequency range: have a look at the correlation between wavelength and frequency. SHould be easy to find in Wiki or some such
    -Uses: Depends on who you ask: Paris Hilton or a physicist
    Medical: treatment of skin conditions like Psoriasis, desinfection
    Physics: IC-production (think: small scale patterns have to be photographically transferred to some substrate. Can you do that with visible??)
    Others: water treatment
    And there are many more. Wiki is your friend
    -Properties: ??? Think about the correlation between wavelength and energy. What is light in the first place? Look up wave-particle dualism.
    -Safety precautions: What do you do to prevent sunburn? See....


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  4. #3  
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    Thanks a lot for that, really appreciated.
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  5. #4  
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    Quote Originally Posted by Twaaannnggg
    Leeeet's seeeee:
    -Speed of travel.....hmmmmmm what might that be. Oh yeah, it's c (at least with a good apporximation) and that is.....look it up in some encyclopedia
    -Wavelength range: depends on the definition but starting below the visible range and goes down to extreme UV so let's say 280nm to 10 nm
    -Frequency range: have a look at the correlation between wavelength and frequency. SHould be easy to find in Wiki or some such
    -Uses: Depends on who you ask: Paris Hilton or a physicist
    Medical: treatment of skin conditions like Psoriasis, desinfection
    Physics: IC-production (think: small scale patterns have to be photographically transferred to some substrate. Can you do that with visible??)
    Others: water treatment
    And there are many more. Wiki is your friend
    -Properties: ??? Think about the correlation between wavelength and energy. What is light in the first place? Look up wave-particle dualism.
    -Safety precautions: What do you do to prevent sunburn? See....
    The speed of light is a constant, c, or 186,282.4mps (in a vacuum). The correlation of wavelength/frequency is proportional. UV waves has a frequency of 14 millionths/inch. The best uses I can think of is for a tan, cooking ants with a magnifying glass, and creating polarized lenses (UV light does not travel through windshields)! UV rays are characterized best in a wave format. To sum up, if your going out side, and its sunny as all hell, then wear sunscreen, or stand behind some glass!
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