1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Millikan's oil drop experiment

  1. Apr 6, 2014 #1
    What is the use of X-ray in Millikan's oil drop experiment? It ionises the oil but what does the ionisation help in? If it creates charge, then the oil's charge keep on increasing it creates error in calculation as the oil drop is attracted upward after sufficient amount of charge.
    Last edited: Apr 6, 2014
  2. jcsd
  3. Apr 6, 2014 #2

    Simon Bridge

    User Avatar
    Science Advisor
    Homework Helper

    The X-ray tube was used to charge the oil drops.
    There is a limit to how much charge can be removed from the drop by x-rays and, anyway you can always turn the tube off before doing the experiment.
  4. Apr 6, 2014 #3


    User Avatar
    Science Advisor
    Gold Member
    2017 Award

    Without something to charge the drops, there would be no experiment.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Threads - Millikan's drop experiment Date
Millikan Oil drop experiment Feb 12, 2014
Clarifying the Basics of the Millikan Oil Drop Experiment Sep 21, 2013
Millikan Oil Drop Issue Aug 6, 2012
Millikan's oil drop Nov 13, 2007
Millikan's Oil Drop Experiment Sep 4, 2007