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Article #1524Re: Question about Coulomb
From: Thomas Karch
Date: Fri, 06 May 1994 06:03
Date: Fri, 06 May 1994 06:03
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Doug Dias (dougdias@COPERNICUS.BBN.COM) wrote: : Here's another question posed by students: : Historically, where did the amount of charge on an electron get its value : from? I know that a Coulomb is based upon an Ampere, but before they were : defined, where did the actual value originate? This is more of a history : question, than physics, but we were wondering... Historically I would say the milestones for the discovery of the elementary charge are - Millikans oil drop experiment (e/m) and - J.J. Tompsons actual 'discovery' of the electron. Everything with refinements of course, to find the 'real' value... (Of course the real value will never be known, unless you redefine your units as in the case of the velocity of light) Thomas
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X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 16cfd8,59fa9cb1cb0035d7 X-Google-Attributes: gid16cfd8,public X-Google-ArrivalTime: 1994-05-06 05:36:22 PST Path: arc1-ca.pugleaf.net!bga.com!news.sprintlink.net!rtp.vnet.net!news1.digex.net!lynx.unm.edu!jobone!newsxfer.itd.umich.edu!newsrelay.iastate.edu!vixen.cso.uiuc.edu!howland.reston.ans.net!paladin.american.edu!news.dell.com!swrinde!dptspd!news.tamu.edu!tamsun!t0k6704 From: t0k6704@tamsun.tamu.edu (Thomas Karch) Newsgroups: bit.listserv.physhare Subject: Re: Question about Coulomb Date: 6 May 1994 06:03:15 GMT Organization: Texas A&M University, College Station Lines: 18 Message-ID: <2qcmj3$8v5@news.tamu.edu> References: <9405021519.AA12704@copernicus.bbn.com> NNTP-Posting-Host: tamsun.tamu.edu X-Newsreader: TIN [version 1.2 PL2]