Re: THE 'RADIUS' OF THE ELECTRON?

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From: Michael J. Strickland
Date: Wed, 03 Sep 2008 17:15

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<Louis_N@edu.herlufsholm.dk> wrote in message 
news:37bc1407-57d5-4632-abd5-b3fb37082dd2@w1g2000prk.googlegroups.com...
Questions:
- What is the value of the experimentally measured �radius� of the
electron?
- What is the value of the experimentally measured �radius� of the
proton?

Best regards
Louis Nielsen
Denmark


I don't know about the experiemental but I would put an upper limit on 
it
by assuming it's density is >= that of a proton. You can then calculate 
limits on it from:

m_e / [4/3 pi (r_e)^3] >= m_p / [4/3 pi (r_p)^3]

r_e <= [ (m_e/m_p)^(1/3) ]* r_p

r_e <= {9.109e-31/1.673e-27) * 8.25e-16m

using:
r_p = 8.25e-16m
m_p = 1.673e-27 kg
m_e = 9.109e-31 kg

r_e <= 4.491e-19 m





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