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Measuring the speed of sound in air

  1. Feb 19, 2009 #1
    1. The problem statement

    Hi all,
    My AS physics coursework is comming up and i'm starting to plan. I will be measurng the speed of sound in air........lots and lots of times as I will then have to speculate as to how accurate my readings are.


    How would you do it if it was you?


    3. The attempt at a solution

    My idea so far will be to place 2 microphones 3.33 meters apart(I wonder why...!), one behind the other but not obscured by it, then connect them to a computer. I will then have a sound source that is a set distance away ( sound source will probably be balloons to burst or banging two pieces of wood together!), The microphones will start recording on a sound trigger basis and so the source should be loud enough to activate this. Hopefully the time between when the two microphones start recording will give me t and d will be 3.33 m, so I should then be able to use speed = (d/t)[/I] any thoughts and comments will be most welcome!!

    Note: I don't want anything to be too accurate (which I doubt anyway :D) as then I wont have anything to talk about in my write-up!
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
     
  2. jcsd
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