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Thread: Vollema Value

  1. #1 Vollema Value 
    New Member
    Join Date
    Oct 2011
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    1
    Hi!
    I'm writing an essay for school on ferrofluids, and I have a question about it, maybe you can help me.

    In quite a few articles, i find the formula ρ=(Ve^-B^2)+p
    with:
    ρ as resistance in Ohm
    V as the vollema value
    B as the strength of the magnetic field in Tesla
    p as the pietrow constant.

    The question I have: what is the vollema value, and how can I determine this value?

    Thanks!


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