Notation of permittivity in farads per meter question

Thread starter KClose1983
Start date Jan 19, 2013
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Meter Notation Per Permittivity

AI Thread Summary

The discussion centers on the notation for electrical permittivity of free space, ε0, which is expressed in farads per meter (Fm^-1). The superscript -1 indicates that it is a reciprocal measurement, where Fm^-1 equals F/m. The conversation highlights a moment of realization regarding this notation, confirming the understanding of the units involved. The clarification emphasizes the relationship between the units of farads and meters in the context of permittivity. Overall, the exchange reinforces the importance of understanding unit notation in physics.

Jan 19, 2013

KClose1983

I am using an old textbook as a reference, and the equation given for the electrical permittivity of free space ε₀ is given in terms of:

(Fm^-1)

where this measurement notation represents farads per meter. Why the superscript of -1 in the notation?

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Jan 19, 2013

SteamKing

Staff Emeritus

Science Advisor

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x^(-1) = 1/x

Fm(-1) = F/m

Are you sure you didn't already know that?

Jan 19, 2013

KClose1983

Oh, geesh. Duh. Yeah, I knew that. Thanks!

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