• Question: What is the best demonstation you have seen to demostrate doppler shift?

    Asked by scorpius to Cesar, Emily, Jamie, Kate, Philippa on 15 Jun 2011.
    • Photo: Jamie Gallagher

      Jamie Gallagher answered on 15 Jun 2011:

      a very simple one is a buzzer or electronic sounder tied to a piece of string. Whirl it around your head. To the person holding it it always sounds the same. To others in the room the sound changes depending on whether the sounder is moving towards them or away.

      Simple but effective. It is also used in medicine to track blood flow rather cleverly.

    • Photo: Emily Robinson

      Emily Robinson answered on 15 Jun 2011:

      I have never seen that one done but I love the simple demonstration! 😀

    • Photo: Kate Clancy

      Kate Clancy answered on 15 Jun 2011:

      Sounds cool, Jamie!

      In my classes, my students’ favorite demonstrations always involve candy. Do you know what the Prisoner’s Dilemma is? It is a game to help people learn and understand cooperative strategies. You should ask your teacher to play it with you some time!

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