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Article #16183Re: Why does light bend under gravity?
From: BradGuth
Date: Mon, 17 Mar 2008 00:18
Date: Mon, 17 Mar 2008 00:18
41 lines
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3977 bytes
On Mar 16, 2:04 pm, Tom Roberts <tjroberts...@sbcglobal.net> wrote: > BradGuth wrote: > > On Mar 16, 9:14 am, Tom Roberts <tjroberts...@sbcglobal.net> wrote: > >> [about Shapiro time delay] > > > But photons clearly represent mass, > > One must be very careful when attempting to say something like this, and > the photon itself clearly has zero mass -- that is part of the > definition of "photon". I have no idea what you mean by "represent" here. A zero mass photon dump truck might haul a wee bit of mass. Therefore a given photon can represent mass, though however extremely wee it might be. BTW, of passing near the sun, what's the all inclusive (meaning full electromagnetic spectrum) worth of photon population/cm3 ? > > > thus the solar atmosphere of > > photons does offer mass for other passing photons to interact with. > > When we say "solar atmosphere" we don't mean photons at all. We mean the > usual sort of things that make up an atmosphere: gases and particulates > floating in the gases. The total mass of the solar atmosphere is utterly > negligible compared to the mass of the sun (just as it is for earth). Then perhaps you could trying thinking outside of that mainstream box. > > I mentioned the solar atmosphere because some people think the Shapiro > time delay is due to it (such an atmosphere has an altitude-varying > index of refraction, which _could_ behave like the Shapiro time delay). > It's just that actual measurements of the solar atmosphere and its > properties completely refute that claim. > > Tom Roberts As long as your zero mass photon dump trucks are always empty little buggers, you could be correct. . - Brad Guth
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X-Google-Thread: 10b271,1ea0cb1d54d3d906 X-Google-Thread: 10f545,2d47498f99950055 X-Google-Thread: f6c41,2d47498f99950055 X-Google-Thread: fa4c1,c0039b44052ddae9 X-Google-Thread: f74ae,c0039b44052ddae9 X-Google-Attributes: gid10b271,gid10f545,gidf6c41,gidfa4c1,gidf74ae,public,usenet X-Google-Language: ENGLISH,ASCII-7-bit Path: arc1-ca.pugleaf.net!g2news1.google.com!postnews.google.com!i12g2000prf.googlegroups.com!not-for-mail From: BradGuth <bradguth@gmail.com> Newsgroups: sci.physics,sci.physics.relativity,sci.physics.particle,fr.sci.physique,sci.astro Subject: Re: Why does light bend under gravity? Date: Sun, 16 Mar 2008 17:18:22 -0700 (PDT) Organization: http://groups.google.com Lines: 41 Message-ID: <ef8a2bd5-8a25-4464-98a9-71158a1c0105@i12g2000prf.googlegroups.com> References: <1de25376-cbdf-4a88-9c24-635b73e962f0@e60g2000hsh.googlegroups.com> <k887s35r0tqpss2mmaj14d9v70qblsjt3v@4ax.com> <7ad9324e-a185-4be5-8d37-36608dda682a@s37g2000prg.googlegroups.com> <6oe7s3t3ffk34ik95onbdq5i7ho1man8vh@4ax.com> <5d081222-5b36-4e82-b8d7-8900c2acbbc4@d4g2000prg.googlegroups.com> <L_mBj.16850$Ch6.2540@newssvr11.news.prodigy.net> <4a84042b-1718-45a4-82f9-0e2b9fa12240@x41g2000hsb.googlegroups.com> <toRBj.16222$xq2.10827@newssvr21.news.prodigy.net> <a2ca4f30-9c55-4fa6-a0a1-cc7ad49e36a4@s37g2000prg.googlegroups.com> <e2b37da4-49a5-40da-95d8-c48add78539d@8g2000hse.googlegroups.com> <350f08c0-cbc4-43ca-9ece-629159f22125@h11g2000prf.googlegroups.com> <OzcDj.20839$Ej5.5102@newssvr29.news.prodigy.net> <35e2ae0d-b9b5-4f10-9dc2-b2cccd1bdf17@s12g2000prg.googlegroups.com> <tQgDj.1401$qT6.838@nlpi070.nbdc.sbc.com> NNTP-Posting-Host: 64.91.99.130 Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-Trace: posting.google.com 1205713103 14187 127.0.0.1 (17 Mar 2008 00:18:23 GMT) X-Complaints-To: groups-abuse@google.com NNTP-Posting-Date: Mon, 17 Mar 2008 00:18:23 +0000 (UTC) Complaints-To: groups-abuse@google.com Injection-Info: i12g2000prf.googlegroups.com; posting-host=64.91.99.130; posting-account=nf79RwoAAABXjvy5ztMzmPxgY1WGoktI User-Agent: G2/1.0 X-HTTP-UserAgent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.12) Gecko/20080201 Firefox/2.0.0.12,gzip(gfe),gzip(gfe)