Article View: sci.electronics
Article #21318Re: wireless electricity
From: John Woods
Date: Tue, 02 May 1989 22:45
Date: Tue, 02 May 1989 22:45
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1161 bytes
In article <17794@cup.portal.com>, ISW@cup.portal.com (Isaac S Wingfield) writes: > Greg Wageman writes: > > Hmm, I guess you must be too young to remember crystal radios? These > were radios that used a diode (originally, a germanium crystal and a > ^^^^^^^^^ > Nope. Iron pyrites (fool's gold). Also sometimes a crystal of galena (lead sulfide?). I remember reading in a really OLD book of kid's science projects about how you could use a rusty disposable razor blade and a bent safety pin as a detector... -- John Woods, Charles River Data Systems, Framingham MA, (508) 626-1101 ...!decvax!frog!john, john@frog.UUCP, ...!mit-eddie!jfw, jfw@eddie.mit.edu
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arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!purdue!decwrl!decvax!ima!mirror!frog!johnReferences:
<gYJRpyy00WB-E57Uwj@andrew.cmu.edu> <913@snjsn1.SJ.ATE.SLB.COM> <17794@cup.portal.com>Show Full Headers
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!purdue!decwrl!decvax!ima!mirror!frog!john From: john@frog.UUCP (John Woods) Newsgroups: sci.electronics Subject: Re: wireless electricity Message-ID: <1357@frog.UUCP> Date: 2 May 89 22:45:00 GMT References: <gYJRpyy00WB-E57Uwj@andrew.cmu.edu> <913@snjsn1.SJ.ATE.SLB.COM> <17794@cup.portal.com> Distribution: na Organization: Misanthropes-R-Us Lines: 16