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Electromagnetic Spectrum

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Messages: 1 - 2 of 2
  • Message 1. 

    Posted by BitesizePhysicsTeacher (U15165682) on Thursday, 8th March 2012

    There are lots of bits of the physics courses that need you to know about the electromagnetic spectrum (sometimes called EM waves).

    Every type of EM wave travels at the speed of light (300,000,000 metres per second) but they have different wavelengths and frequencies, which gives them different properties.

    You are expected to know the order of the types of EM waves in the spectrum and how their wavelengths and frequencies change.

    In order of increasing frequency (decreasing wavelength) they are -

    Radio & TV
    Microwaves
    Infra-red
    Visible light
    Ultra Violet
    X-rays
    Gamma Rays

    To help you remember the order you could try to come up with a mnemonic, e.g. -

    Robot
    Monkeys
    Inside
    Vans
    Use
    Xylophones
    Gleefully

    Making up your own silly sentence should make it easier to remember, but only if you remember that Robot = Radio & TV etc.

    Why not reply to this discussion item with your own mnemonic (remember the house rules though, keep it clean!)

    Report message1

  • Message 2

    , in reply to message 1.

    Posted by BitesizePhysicsTeacher (U15165682) on Monday, 3rd December 2012

    Might be worth repeating with prelims coming up.

    Report message2

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