<div dir="auto"><div>Tom, please excuse me for a bit different description as I do not agree with variation in speed of light. Constancy of speed of light has been proved through many experiments, so I would prefer to discuss only about meaning of this constancy. We are aware of so many different kind of fields. I simply put them into two different category:</div><div dir="auto"><br></div><div dir="auto"><b>ANISOTROPIC FIELDS</b>: Gravitational Field, Electromagnetic Field, Strong Force Field, Weak Force Field.</div><div dir="auto"><br></div><div dir="auto"><b>THE ISOTROPIC FIELD</b>: Yet undiscovered and/or not understood. It is only of one kind, since we cannot have two different kind of Isotropy, similar to the argument that we cannot have two different kind of perfect transparency. It can either be coloured or perfectly transparent. Since we have not understood this field, we speculate our amazement with different names: Aether, Higgs Field, Spacetime, Isotropic Continuum, etc.</div><div dir="auto"><br></div><div dir="auto">All Anisotropic Fields are local distortion of The Isotropic Field, caused by matter particles which is the source of local distortion/anisotropy. Or in other worlds all fields(including The Isotropic Field) are not different from matter particles but they are part of it. They are all extension of matter particles. Similar is the case with photon (e/m field) , which has no independent existence separate from matter. </div><div dir="auto"><br></div><div dir="auto">Due to dynamic interaction between the extensions of matter particles, matter particles are always <b>effectively at rest</b> wrt large scale Isotropic field. And extensions are always moving at velocity c wrt same Isotropic Field. So speed of light<b> (extension) </b>is constant with respect to matter<b> (source)</b>.</div><div dir="auto"><br></div><div dir="auto">Regards,</div><div dir="auto"><br></div><div dir="auto">Tufail Abbas</div><div dir="auto"><br><div class="gmail_extra" dir="auto"><div class="gmail_quote">On Jun 10, 2017 8:38 PM, "<a href="mailto:carmam@tiscali.co.uk">carmam@tiscali.co.uk</a>" <<a href="mailto:carmam@tiscali.co.uk">carmam@tiscali.co.uk</a>> wrote:<br type="attribution"><blockquote class="quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div>Tufail, here is some speculation.</div>Light, on its way to planet Earth from any star, travels at speed c relative to the medium it is in. <div>Let's call empty space a medium because it is not really empty. The light leaves the star at c and travels outward. For the first part of its journey it is in the medium surrounding the star it has just left, so it travels at c WRT that star for let us say one light year. It then enters inter stellar space, where there are atoms and molecules, and takes up a speed c WRT that medium. As it passes near other stars on its way to us, its speed changes to c WRT each of those stars. It finally arrives at Earth, where its speed is c WRT Earth. The illusion is made that the speed of light is relative to the observer, as each observer, wherever he is, sees the light at c (plus or minus his own speed). His own speed is so minute compared to light speed, that when he measures the speed of light, he will find it to be c.</div><div>It arrives on Earth, changing its speed to c WRT Earth, or to be more precise c/n, where n in our atmosphere is 1.00029 . Again, to any observer, that speed is so close to c to be indistinguishable from it.</div><div>An alternative to the medium would be the gravitational field of any star or matter in space through which that light passes, so the speed of light is c WRT the local gravitational field. I have heard of both theories.</div><div>Tom Hollings</div><div><div class="quoted-text">
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----Original Message----<br>
From: <a href="mailto:tufail.abbas@gmail.com" target="_blank">tufail.abbas@gmail.com</a><br>
Date: 10/06/2017 10:32<br>
To: "Stavros Tassos"<<a href="mailto:s.tassos@yahoo.com" target="_blank">s.tassos@yahoo.com</a>>, "General Physics and Natural Philosophy discussion list"<<a href="mailto:physics@tuks.nl" target="_blank">physics@tuks.nl</a>><br>
Subj: Re: [Physics] gravity is NOT a force<br>
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</div><div class="quoted-text"><div dir="auto"><div>Dear All </div><div dir="auto"><br></div><div dir="auto">I also agree in principle to the following statements from Stavros Message, based upon reading his paper Z-Infinity. </div><div dir="auto"><div class="gmail_extra" dir="auto"><br></div><div class="gmail_extra" dir="auto"><span style="font-family:verdana,helvetica,sans-serif;font-size:16px;background-color:rgb(255,255,255)">1. Space-time is everything.</span></div><div class="gmail_extra" dir="auto"><span style="background-color:rgb(255,255,255);font-family:verdana,helvetica,sans-serif;font-size:16px">2. Empty space does not exist as a physical entity.</span></div><div class="gmail_extra" dir="auto"><span style="font-family:verdana,helvetica,sans-serif;font-size:16px;background-color:rgb(255,255,255)">3. S</span><span style="font-family:verdana,helvetica,sans-serif;font-size:16px;background-color:rgb(255,255,255)">pace and time exist as physical entities.</span></div><div class="gmail_extra" dir="auto"><span style="font-family:verdana,helvetica,sans-serif;font-size:16px;background-color:rgb(255,255,255)">4. Space-time has a cyclic and a unidirectional component.</span><span style="font-family:verdana,helvetica,sans-serif;font-size:16px;background-color:rgb(255,255,255)"><br></span></div><div class="gmail_extra" dir="auto"><span style="background-color:rgb(255,255,255);font-family:verdana,helvetica,sans-serif;font-size:16px">5. Space-time is a waving continuum and </span><span style="background-color:rgb(255,255,255);font-family:verdana,helvetica,sans-serif;font-size:16px">is curved because of its waving nature.</span><br></div><div class="gmail_extra" dir="auto"><span style="background-color:rgb(255,255,255);font-family:verdana,helvetica,sans-serif;font-size:16px">6. Space-time is absolutely elastic</span><span style="background-color:rgb(255,255,255);font-family:verdana,helvetica,sans-serif;font-size:16px"> at speed < c, and absolutely rigid for any speed >= c.</span></div><div class="gmail_extra" dir="auto"><br></div><div class="gmail_extra" dir="auto"><span style="font-family:"pt sans narrow";font-size:11pt">Physicist Matt Strassler made a very important statement as follows, regarding Higgs Fields and Space-time at <a href="https://profmattstrassler.com/articles-and-posts/the-higgs-particle/the-higgs-faq-2-0/" target="_blank">https://profmattstrassler.c<wbr>om/articles-and-posts/the-higg<wbr>s-particle/the-higgs-faq-2-0/</a></span></div><div class="gmail_extra" dir="auto"><p dir="ltr" style="line-height:1.2;margin-top:0pt;margin-bottom:0pt"><br></p><span style="font-size:11pt;font-family:"pt sans narrow";color:rgb(51,51,51);font-style:italic;vertical-align:baseline">“No matter how you are moving, you are not moving relative to the Higgs field. That sounds bizarre, but remember something else bizarre: that no matter how you are moving, light is moving about relative to you at the same speed, namely 300,000 meters per second. Our intuition for space and time is not correct — that’s what Einstein figured out — and it is possible for there to be fields that are at rest with respect to all observers!”</span><span style="font-family:verdana,helvetica,sans-serif;font-size:16px;background-color:rgb(255,255,255)"><br></span></div><div class="gmail_extra" dir="auto"><br><div class="gmail_quote" dir="auto">What are your thoughts on the above.</div><div class="gmail_quote" dir="auto"><br></div><div class="gmail_quote" dir="auto">Regards</div><div class="gmail_quote" dir="auto"><br></div><div class="gmail_quote" dir="auto">Tufail Abbas</div><div class="gmail_quote" dir="auto"><br></div><div class="gmail_quote" dir="auto"><br></div><div class="gmail_quote" dir="auto"><br></div><div class="gmail_quote" dir="auto"><br></div><div class="gmail_quote" dir="auto"><br></div><div class="gmail_quote" dir="auto"><br></div><div class="gmail_quote" dir="auto"><br></div></div></div></div>
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