Red Shift and lost energy.

Let's take this a step further, what effect does the acceleration have on the Galaxy itself. Do galaxies interpret this acceleration as an increase in gravity? If Galaxy A is accelerating from all of the other galaxies that are linked to it through Gravity, will the galaxy behave as if it has more mass than it actually does...thus, your dark matter.

Experimentally, the earth moves closer to the sun sometimes during its orbit and away from it at others. Would there be any way to detect if earth experiences any gravitational fluctuations as a result of these cycles? I am sure if it does, we have data. Has such a study ever been done...Are there gravitational fluctuations on Earth....as miniscule as they might be?

<blockquote id="quote"><font size="2" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote">If the Red Shift is doppler, how is the photon actually stretched?<hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote">
If the "Big Unit" (who just passed the 4000 strikeout mark) throws a pitch in your direction, you will not be able to hit it. But, if he was on a conveyor belt going away from you at, say, 40 mph, then maybe you could hit the damn thing ;o)

As the light is emitted, that electron is moving away ... so ... the emitted radiation is stretched out. In BB today they would say that as the photon travels through space, it expands along with space and thus has a longer wavelength.

MM would say that some of the energy of the photon was lost in transit to the medium it travels through as a function of the distance travelled, resulting in a longer wavelength.

Thanks EBTX,

I know what BBers say, but I think they are missing an obvious phenomena if the Universe is expanding.

Tom,

I know you have done work with GPS and it can shed light on Gravity. At the moment of perihelion and aphelion when the earth starts is move away and towards the sun respectively, does GPS show any jolts? Further, are there any delays? If there are jolts with delays, wouldn't this show that the speed of Gravity is not instantanious?

<blockquote id="quote"><font size="2" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by rousejohnny</i>
<br />At the moment of perihelion and aphelion when the earth starts is move away and towards the sun respectively, does GPS show any jolts?<hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote">No. But what could possibly cause one? You would need an impact to get a jolt. All gravitational forces are continuous.

<blockquote id="quote"><font size="2" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote">Further, are there any delays?<hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote">In gravity? Definitely not. No delay in gravitational force has ever been seen in physical reality. Moreover, even computer experiments show that force delayed by the speed of light changes closed orbits into spirals, as happens for dust particles from comets and for artificial balloon satellites of Earth. In both those cases, the force producing the spiraling is solar radiation pressure, which is a retarded force taking 8.3 minutes to get to Earth. But gravity has no such delay.

<blockquote id="quote"><font size="2" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote">If there are jolts with delays, wouldn't this show that the speed of Gravity is not instantanious?<hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote">Propagation delays would show that. I don't get what you mean by "jolts". -|Tom|-

<blockquote id="quote"><font size="2" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by rousejohnny</i>
<br />Experimentally, the earth moves closer to the sun sometimes during its orbit and away from it at others. Would there be any way to detect if earth experiences any gravitational fluctuations as a result of these cycles?<hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote">Any sensitive gravimeter can detect force from the Sun and Moon, and changes in such forces. In fact, when I visited the gravimeter at U. of Maryland, it could easily track my movements around the room because I was an object with changing gravity.

In a sense, every orbiting body is a gravity detector because its acceleration is directly proportional to the strength of gravitational force. -|Tom|-

So tommorrow at approx. 6am EDT the gravimeter will detect aphelion? Also, I have not been able to find an exact time for the phenomena, all the data I could find says 11GMT or UT, they always are rounded off. What I am trying to say, is that if we know the exact time aphelion is to occur and we can measure when we start accelerating back towards the sun (the reason I said jolts is because the acceleration would only be for an instance), if the gravimeter shows it happens anywhere between the point of aphelion and approximately 8 minutes later, this would prove that gravity is faster than light, and may show how much faster.