Article View: sci.physics.relativity
Article #6293Re: Acceleration should cause Time Dilation
From: Pentcho Valev
Date: Mon, 15 Oct 2007 06:25
Date: Mon, 15 Oct 2007 06:25
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8160 bytes
On 15 Oct, 07:07, Tom Roberts <tjroberts...@sbcglobal.net> wrote in sci.physics.relativity: > gu...@hotmail.com wrote: > > A person pulling Hi G's in a plane can barely move, likewise a clock > > should also have a hard time moving, which would cause time dilation? > > The decay of muons is a clock that is unaffected by an acceleration of > 10^18 g -- vastly larger than any pilot could sustain. > > > Yet none of the airplane time dilation tests seem to have taken this > > into account. > > There is no such effect to take into account. > > > As well Gravity generates a time dilation, > > It is not "gravitational force" or "gravitational acceleration" that is > associated with gravitational time dilation, it is a difference in > gravitational potential. Loosely speaking, that is a difference in > energy, not an acceleration. > > Tom Roberts Bravo Roberts bravo Tom bravo Albert Einstein of our generation (Hawking is no longer the Albert Einstein of our generation)! Let me elaborate. What you say above is in accordance with what only half of your criminal brothers teach - that the speed of light is CONSTANT in a gravitational field: http://www.astronomynotes.com/relativity/s4.htm "Prediction: light escaping from a large mass should lose energy---the wavelength must increase since the speed of light is constant. Stronger surface gravity produces a greater increase in the wavelength. This is a consequence of time dilation. Suppose person A on the massive object decides to send light of a specific frequency f to person B all of the time. So every second, f wave crests leave person A. The same wave crests are received by person B in an interval of time interval of (1+z) seconds. He receives the waves at a frequency of f/(1+z). Remember that the speed of light c = (the frequency f) (the wavelength L). If the frequency is reduced by (1+z) times, the wavelength must INcrease by (1+z) times: L_atB = (1+z) L_atA. In the doppler effect, this lengthening of the wavelength is called a redshift. For gravity, the effect is called a GRAVITATIONAL REDSHIFT." http://helios.gsfc.nasa.gov/qa_sp_gr.html "Is light affected by gravity? If so, how can the speed of light be constant? Wouldn't the light coming off of the Sun be slower than the light we make here? If not, why doesn't light escape a black hole? Yes, light is affected by gravity, but not in its speed. General Relativity (our best guess as to how the Universe works) gives two effects of gravity on light. It can bend light (which includes effects such as gravitational lensing), and it can change the energy of light. But it changes the energy by shifting the frequency of the light (gravitational redshift) not by changing light speed. Gravity bends light by warping space so that what the light beam sees as "straight" is not straight to an outside observer. The speed of light is still constant." Dr. Eric Christian The other half of the hypnotists in Einstein criminal cult, among them YOU Roberts Roberts, the Albert Einstein of our generation (Hawking is no longer the Albert Einstein of our generation), teach that the speed of light in a gravitational field is VARIABLE; as you know Roberts Roberts, this implies that there is NO GRAVITATIONAL TIME DILATION: http://www.blazelabs.com/f-g-gcont.asp "The first confirmation of a long range variation in the speed of light travelling in space came in 1964. Irwin Shapiro, it seems, was the first to make use of a previously forgotten facet of general relativity theory -- that the speed of light is reduced when it passes through a gravitational field....Faced with this evidence, Einstein stated:"In the second place our result shows that, according to the general theory of relativity, the law of the constancy of the velocity of light in vacuo, which constitutes one of the two fundamental assumptions in the special theory of relativity and to which we have already frequently referred, cannot claim any unlimited validity. A curvature of rays of light can only take place when the velocity of propagation of light varies with position."......Today we find that since the Special Theory of Relativity unfortunately became part of the so called mainstream science, it is considered a sacrilege to even suggest that the speed of light be anything other than a constant. This is somewhat surprising since even Einstein himself suggested in a paper "On the Influence of Gravitation on the Propagation of Light," Annalen der Physik, 35, 1911, that the speed of light might vary with the gravitational potential. Indeed, the variation of the speed of light in a vacuum or space is explicitly shown in Einstein's calculation for the angle at which light should bend upon the influence of gravity. One can find his calculation in his paper. The result is c'=c(1+V/c^2) where V is the gravitational potential relative to the point where the measurement is taken. 1+V/c^2 is also known as the GRAVITATIONAL REDSHIFT FACTOR." http://www.physlink.com/Education/AskExperts/ae13.cfm "So, IT IS ABSOLUTELY TRUE THAT THE SPEED OF LIGHT IS NOT CONSTANT in a gravitational field [which, by the equivalence principle, applies as well to accelerating (non-inertial) frames of reference]. If this were not so, there would be no bending of light by the gravitational field of stars....Indeed, this is exactly how Einstein did the calculation in: "On the Influence of Gravitation on the Propagation of Light," Annalen der Physik, 35, 1911. which predated the full formal development of general relativity by about four years. This paper is widely available in English. You can find a copy beginning on page 99 of the Dover book "The Principle of Relativity." You will find in section 3 of that paper, Einstein's derivation of the (variable) speed of light in a gravitational potential, eqn (3). The result is, c' = c0 ( 1 + V / c^2 ) where V is the gravitational potential relative to the point where the speed of light c0 is measured." Tom Roberts wrote in sci.physics.relativity: > Pentcho Valev wrote: > > CAN THE SPEED OF LIGHT EXCEED 300000 km/s IN A GRAVITATIONAL FIELD? > Sure, depending on the physical conditions of the measurement. It can > also be less than "300000 km/s" (by which I assume you really mean the > standard value for c). And this can happen even for an accelerated > observer in a region without any significant gravitation (e.g. in > Minkowski spacetime). > Tom Roberts tjroberts@lucent.com Pentcho Valev
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X-Google-Thread: 10f545,7ad66c0c6dc4808e X-Google-Thread: 10b271,a12642736c5f96e,start X-Google-Thread: f74ae,a12642736c5f96e,start X-Google-Thread: fa4c1,a12642736c5f96e,start X-Google-Thread: 1139f8,a12642736c5f96e,start X-Google-Attributes: gid10f545,gid10b271,gidf74ae,gidfa4c1,gid1139f8,public,usenet X-Google-Language: ENGLISH,ASCII-7-bit Path: arc1-ca.pugleaf.net!g2news2.google.com!postnews.google.com!v29g2000prd.googlegroups.com!not-for-mail From: Pentcho Valev <pvalev@yahoo.com> Newsgroups: sci.physics.relativity,sci.physics,sci.astro,fr.sci.physique,fr.sci.maths Subject: Re: Acceleration should cause Time Dilation Date: Sun, 14 Oct 2007 23:25:34 -0700 Organization: http://groups.google.com Lines: 120 Message-ID: <1192429534.345273.325710@v29g2000prd.googlegroups.com> References: <1192415039.615238.277570@v29g2000prd.googlegroups.com> <eACQi.6373$oA2.1045@nlpi068.nbdc.sbc.com> NNTP-Posting-Host: 85.91.141.160 Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" X-Trace: posting.google.com 1192429535 5260 127.0.0.1 (15 Oct 2007 06:25:35 GMT) X-Complaints-To: groups-abuse@google.com NNTP-Posting-Date: Mon, 15 Oct 2007 06:25:35 +0000 (UTC) In-Reply-To: <eACQi.6373$oA2.1045@nlpi068.nbdc.sbc.com> User-Agent: G2/1.0 X-HTTP-UserAgent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 1.1.4322; .NET CLR 2.0.50727; .NET CLR 3.0.04506.30),gzip(gfe),gzip(gfe) Complaints-To: groups-abuse@google.com Injection-Info: v29g2000prd.googlegroups.com; posting-host=85.91.141.160; posting-account=ps2QrAMAAAA6_jCuRt2JEIpn5Otqf_w0