🚀 go-pugleaf

"Jesus-loves-you" <John15.13@1.John4.8.Heaven> wrote in message 
news:g9o8mt$s35$1@newsbin.cybercity.dk...
> "Michael J. Strickland" skrev
> news:MCzvk.426$1a2.311@trnddc04
>>
>> <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
>>
>>
>>
>>
>>
>> --
>> -----------------------------------------------------------------------
>> Michael J. Strickland
>> Quality Services 
>> qualityservices2@verizon.net
>> 703-560-7380
>> -----------------------------------------------------------------------
>>
>
> Compare with ...
>
> 7705 news:g6b4bd$24o4$1@newsbin.cybercity.dk
>>
>> > > Electron
>> > >     Size < 10^-18 m
>> > > ...
>> > > Neutron and Proton
>> > >     Size (around) 10^-15 m
>
>
> Smart guy ... :-)
>
> *Where* do You get this information ( r_p = 8.25e-16m ) from ?

http://en.wikipedia.org/wiki/Proton:

... a diameter of about 1.65�10-15  m

...


-- 
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Michael J. Strickland
Quality Services                           qualityservices2@verizon.net
703-560-7380
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