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Article #806Re: ?? about color and photons
From: B. Flanagan
Date: Fri, 17 Feb 1995 16:27
Date: Fri, 17 Feb 1995 16:27
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2354 bytes
On Fri, 10 Feb 1995, Larry Adams wrote: > Eric Rude (rudeeric@cwis.isu.edu) wrote: > > > : Hello > : Here are some questions from some high school students: > : 1. If there is no animal life present (intelligent or otherwise), when > : the sun rises, is there color? > > : 2. Is it possible (theoretically or otherwise) to split a photon? If so, > : what would it result in? > > : Thank you. > > : -- > : Eric Rude Pocatello High School > : rudeeric@cwis.isu.edu > #1: This is actually quite a deep problem, tho' people commonly trivialize it with jokes about trees falling in forests, & has to do with the "observer problem" in QM as well as the "collapse of the wave function" in the same context. I believe that yes, color existed before there were any sentient creatures to observe it. Bell, in his _Speakable & Unspeakable in QM_, addresses these issues, contrasting the notion of "observable" with (his coinage) "beable". #2 is also under discussion among scholars, tho' again the common wisdom is that all this has been settled long ago. See Bell again, as well as Bohm & Hiley's recent _Undivided Universe_. Hope this is helpful. Sounds like you have some very bright students. All the best, Brian Flanagan
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X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 10b271,ce55ed5d486e715f X-Google-Attributes: gid10b271,public X-Google-Thread: 16cfd8,ce55ed5d486e715f X-Google-Attributes: gid16cfd8,public X-Google-ArrivalTime: 1995-02-17 16:49:52 PST Path: arc1-ca.pugleaf.net!nntp.gmd.de!newsserver.jvnc.net!news.cac.psu.edu!news.pop.psu.edu!hudson.lm.com!netline-fddi.jpl.nasa.gov!nntp-server.caltech.edu!vixen.cso.uiuc.edu!uwm.edu!hookup!news.mathworks.com!uunet!news.uiowa.edu!blue.weeg.uiowa.edu!blue.weeg.uiowa.edu!bflanagn From: "B. Flanagan" <bflanagn@blue.weeg.uiowa.edu> Newsgroups: bit.listserv.physhare,sci.physics Subject: Re: ?? about color and photons Date: Fri, 17 Feb 1995 10:27:22 -0600 Organization: University of Iowa, Iowa City, IA, USA Lines: 40 Distribution: world Message-ID: <Pine.A32.3.91.950217101758.149529H-100000@blue.weeg.uiowa.edu> References: <3hc5lq$l79@cwis.isu.edu> <laradexD3s2Az.4LA@netcom.com> NNTP-Posting-Host: blue.weeg.uiowa.edu Mime-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII In-Reply-To: <laradexD3s2Az.4LA@netcom.com>