Has science hit the buffers about time

[siarad]

I also see a problem as it seems to be a gravity-bound thing. Isn't a free-orbiting object tracing an equal gravity motion.<br />Interesting, so does that mean way out in freespace, I mean between galaxies, time dilation wouldn't happen.<br />

 

[R1]

clocks slow down according to the strength of the gravitational field,<br /><br />and gravity appears to spread infinitely never reaching zero, however small that may be at great distances.<br /><br />Here on earth we have earth's gravity and we are close to the sun and the planets, but all these<br />local gravities are getting smaller (weaker), more and more, at the Voyager locations, so I think<br />the logic of my thinking is that:<br /><br /> as the gravitational field strengths diminish at the Voyager locations, their clocks would be gravity-slowed<br />less and less <br /><br /> <div class="Discussion_UserSignature"> </div>

 

[trumptor]

I think I asked this question before and don't remember if anybody answered it. Here it goes again, because this always confuses me too.<br /><br />ranur:<br />"It is actually not the speed it itself that creates the paradox. It is the force used to change the direction (the acceleration) that the creates it, and the return home that resolves it."<br /><br />Me:<br />My question is this...considering that maintaining a planet in orbit there has to be constant acceleration to fight the centrifugal force, why doesn't the orbiting body undergo greater and greater time dialation as it orbits its host. If I had a brother and he went to the moon, then I flew up there 20yrs later, why wouldn't he be younger than me considering that he would be constantly accelerating around me? <div class="Discussion_UserSignature"> <p><em><font color="#0000ff">______________</font></em></p><p><em><font color="#0000ff">Caution, I may not know what I'm talking about.</font></em></p> </div>

 

[R1]

good points and good questions. Here's an article I found very interesting:<br /><br />http://en.wikipedia.org/wiki/Gravitational_time_dilation<br /><br />from the paragraph 'definition', " Any kind of g-load contributes to gravitational time dilation. "<br /><br />it's also true that time dilation is probably small around here, but it was easily proved that at different<br />altitudes on earth, atomic clocks measure time at different rates, I think the observations were in terms<br />of nanoseconds, but over long peiods of time these discrepancies must surely add up considerably.(And the<br />Voyagers are expected to reach high altitudes for a very long time)<br /><br /><br />Now I'm not sure what exactly is meant by resolving a twin by means of a return trip, but once an atomic clock<br />at high altitude reads 10:05 when it's twin on earth reads 10:01 it appears to me it's forever askew,<br />unless maybe we accelerate it so much for so long until the clock on earth resynchronizes? I don't know <br />I'm curious to see everyones input on this.<br /><br /><br /><br /><br /> <div class="Discussion_UserSignature"> </div>

 

[siarad]

<blockquote><font class="small">In reply to:</font><hr /><p>Me: <br />My question is this...considering that maintaining a planet in orbit there has to be constant acceleration to fight the centrifugal force, why doesn't the orbiting body undergo greater and greater time dialation as it orbits its host. If I had a brother and he went to the moon, then I flew up there 20yrs later, why wouldn't he be younger than me considering that he would be constantly accelerating around me? <br /><p><hr /></p></p></blockquote><br />That's exactly what happens. SatNav satellites have to be updated continuously to account for added time i.e. falling behind our clocks. what I can't find is what happens to the transmitter frequency also a clock.

 

[R1]

Interesting. The frequency is probably askew? as in redshifted, but probably in the smallest digits to the right<br />of the decimal point that are beyond the equipment's reach. But this is an apple, and time is a different<br />orange, because time can accumulate, when two clocks run at different speeds in a significant duration.<br /><br /><br /><br /><br /> <div class="Discussion_UserSignature"> </div>

 

[siarad]

Ah but frquency is cumulative too, it's just another clock with the readout on the remote receiver <img src="/images/icons/smile.gif" />