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ItzPootz
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Millikan Oil Drop Experiment -- A few questions
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.
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Homework Statement
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.
Homework Equations
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The Attempt at a Solution
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