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Homework Help: Millikan Oil Drop Experiment - A few questions

  1. Oct 17, 2012 #1
    Millikan Oil Drop Experiment -- A few questions

    1. The problem statement, all variables and given/known data
    I'm currently doing the millikan oil drop lab; we're using a PASCO Scientific Model 300a (fairly ancient). Specifically, my partner and I are having major problems making any of the droplets in the viewing chamber go back up when switching the top plate to negative/positive.

    We give it a strong squeeze, we see tons of droplets in the chamber, but they all just keep moving down the chamber. We've had two instances of successfully making a drop oscillate, but we suck at experiments and didn't think about the nuances to using a stopwatch in the dark.

    However, the past 3 sessions we've attempted have yielded NO drops that even slow down when charging the plates. What's up with that? I'm desperately looking for pointers here; I didn't think this would be that frustrating.

    Thanks for any help.

    2. Relevant equations

    3. The attempt at a solution
  2. jcsd
  3. Oct 22, 2012 #2


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    come on guys …

    someone must know how to fix this! :smile:
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