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Homework Help: Why the chamber for the Millikan Oil Drop experiment is so large?

  1. May 31, 2012 #1
    1. The question asks, why is the external chamber in the Millkan Oil Drop experiment so large?

    The Millikan Oil Drop is a classic experiment for determing the value of e, fundamental charge, on an electron. In my version of the experiment, I spraw droplets into an external chamber, and then they fall through a hole where they are observed. So, why is the external chamber so large?

    my attempt at a solution

    I say that the chamber is large so as to prevent oil droplets being drawn back into the external chamber when they are released from the atomiser. That was just a wild guess though.

    What do you think?
  2. jcsd
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