Article View: sci.physics.relativity
Article #7338Re: Speed of light is variable says Einstein
From: N:dlzc D:aol T:com (dlzc)
Date: Thu, 20 Sep 2007 02:23
Date: Thu, 20 Sep 2007 02:23
41 lines
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3160 bytes
Dear Oncle Dom: "Oncle Dom" <dom.caudron@wanaNULLdoo.fr> wrote in message news:46f12d7f$0$5077$ba4acef3@news.orange.fr... > N:dlzc D:aol T:com (dlzc) dans son message > Aw0Ii.36963$L_7.6145@newsfe16.phx, > nous a fait l'honneur d'οΏ½crire: >>>> Roemer, 1675, 215.000+-100,000 >>> Roemer never gave a result in km/s >>> he found 11 mn first, and then 7 mn, for the time >>> needed by light to go from sun to earth >> >> His results are reported, and scaled to a speed of >> light in km/sec or mi/sec. If you think about most >> of the c measurements, they also are not really >> distance/time, but time for a known distance, or >> some such. > There is the problem: > 1672, measurements of the astronomical unit: from > 66 to 138 Mkm > 1675, estimation of the time needed bt light: from > 7 mn to 11 mn > So, the estimation of the speed of light is from > 100 000 km/s to 330 000 km/s > that's in the order of 180 000 km/s, but the estimation > is only good in the order > It's not really a measurement It is *the first* measurement that is finite on record. It is the first measurement adequate to the task of measuring c, with very little to work with... barely a "stopwatch". I am impressed with the concept, and that it was reported, and retained. I understand that you are unimpressed, but it really *is* a measurement. MMX returned a null result. Was this a measurement? Just curious as to your opinion here... not to hijack this thread. David A. Smith
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X-Google-Thread: 10f545,66145f633ff3a23c X-Google-Thread: 103d8c,66145f633ff3a23c X-Google-Thread: fa4c1,5d725dc22cea8bd5 X-Google-Thread: f74ae,5d725dc22cea8bd5 X-Google-Attributes: gid10f545,gid103d8c,gidfa4c1,gidf74ae,public,usenet X-Google-Language: ENGLISH,ASCII Path: arc1-ca.pugleaf.net!g2news2.google.com!news2.google.com!news.glorb.com!hwmnpeer01.lga!news.highwinds-media.com!hw-filter.phx!newsfe07.phx.POSTED!53ab2750!not-for-mail From: "N:dlzc D:aol T:com \(dlzc\)" <dlzc1@cox.net> Newsgroups: sci.physics.relativity,de.sci.physik,fr.sci.physique,sci.astro References: <f9h17k$ndp$2@aioe.org> <2Z_ui.27237$RX.20115@newssvr11.news.prodigy.net> <23223.4B1a5.88062.40534.85318@quantumworldz.com> <LGnvi.3258$i85.661@nlpi061.nbdc.sbc.com> <1186897733.841438.76070@k79g2000hse.googlegroups.com> <1187486327.521094.68680@w3g2000hsg.googlegroups.com> <46ed76f3$0$5112$ba4acef3@news.orange.fr> <sPeHi.36690$L_7.23384@newsfe16.phx> <46f07fd2$0$27375$ba4acef3@news.orange.fr> <Aw0Ii.36963$L_7.6145@newsfe16.phx> <46f12d7f$0$5077$ba4acef3@news.orange.fr> Subject: Re: Speed of light is variable says Einstein Lines: 43 X-Priority: 3 X-MSMail-Priority: Normal X-Newsreader: Microsoft Outlook Express 6.00.2900.3138 X-RFC2646: Format=Flowed; Original X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3138 X-NFilter: 1.2.0 Message-ID: <xQkIi.100547$Vk6.7596@newsfe07.phx> Date: Wed, 19 Sep 2007 19:23:47 -0700 NNTP-Posting-Host: 68.106.250.76 X-Complaints-To: admin@cox.net X-Trace: newsfe07.phx 1190255005 68.106.250.76 (Wed, 19 Sep 2007 19:23:25 MST) NNTP-Posting-Date: Wed, 19 Sep 2007 19:23:25 MST Organization: Cox