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Please Help me

  1. Oct 18, 2007 #1
    gooooood evening..

    i have presentation about the effect of vibration on human and i did not find what i want and i did not understant the topices when i searched from google .. so I will be grateful if anyone could help me..
     
  2. jcsd
  3. Oct 18, 2007 #2

    malty

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    Vibrations on human beings? Isn't that more physiology and biology than physics? Anyways listing the topics you didn't understand would be start. .because we may not understand them either!
     
  4. Oct 18, 2007 #3
    i do not think that this topic related to biology because our this presentation physics lad class..
     
  5. Oct 18, 2007 #4

    malty

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    Ok fine so, what topics do you have difficulty with? Hey we must know, because otherwise it may not be possilbe to actually help you, who knows?
     
  6. Oct 18, 2007 #5
    A number of bodily systems respond to vibrations in the <20 Hz range, producing effects such as nausea, urination, sexual arousal, etc. Is this what you're looking at?
     
  7. Oct 19, 2007 #6
    In the ear's cochlea, there are tens of thousand of hairs which vibrate at different frequencies in the range of 20 - 20000Hz. When we hear a sound, in fact the sound is a combination of many frequencies (Fourier series) and the hairs vibrate resonantly according to the sound and finally the brain 'know' the signal.
     
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