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What is a dielectric sphere?

  1. Dec 3, 2009 #1
    im confused about what a dielectric sphere is. I have tried googleing it but i couldnt find anything that useful, please help
  2. jcsd
  3. Dec 3, 2009 #2


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    Staff: Mentor

    It's a sphere made of a dielectric material. A "dielectric" is a (usually) electrically insulating material such as you put between the plates of a capacitor in order to increase the capacitance.

    What is the context of your question?
    Last edited: Dec 5, 2009
  4. Dec 5, 2009 #3
    it is in relation to optical tweezers, i read on wikipedia that they can be used for things such as a dielectric sphere.
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