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Name: Michael
Status: other
Age: 20s
Location: N/A
Country: N/A
Date: 1999 

I was curious as to whether or not an electron has a volume. So I looked it up in a table of physical constants and it mentioned that the "Electron classical radius" is 2.81794092e-15 m. So question I have is how was this radius determined? Via experimental observation or through some more indirect route?

(FYI, I happened to come up with the same number using an indirect method and I'm curious whether I just happened to stumble upon the same methods that were already known and used.)

The idea behind the classical electron radius is that a classical distribution of charge totalling the electron's charge would have electrostatic potential energy equivalent to the electron's rest mass if it were confined to a volume of this radius.

Tim Mooney

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