Dingle's Paradoxes

Cosmological (Hubble) Red Shift (CRS) is not detectable over small distances like within a galaxy. I believe it is even hard to detect over galactic-cluster distances.

You have to be talking about really large distances before it shows up. I don't see how satellites a few tens of thousands of kilometers away could exhibit any detectable level of CRS.

LB

Why would you believe Hubble redshift is not observable at the local level? That makes absolutly no sense at all. The hubble Constant may be seen at every scale and is about equal to one nanometer per second square.

<blockquote id="quote"><font size="2" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by Jim</i>
<br />Why would you believe Hubble redshift is not observable at the local level? That makes absolutly no sense at all. The hubble Constant may be seen at every scale and is about equal to one nanometer per second square.<hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote">

You just equated the Hubble constant to an acceleration, which is impossible. It does not have the correct units (dimensions).

The Hubble constant is roughly 60 km/s/Mpc. This means that the redshift expressed as a velocity increases by 60 km/s for every megaparsec traveled. If light travels only from a GPS satellite to the ground, that is a distance of only 0.000 000 000 000 01 megaparsec. So the doppler shift (cosmological redshift) of a GPS satellite is only 0.000 000 000 000 60 km/s, This is about 6 angstroms per second, which is way too small to be detectable.

In fact, as Larry says, the Hubble constant cannot be detected within the solar system, but only over vast extragalactic distances. -|Tom|-

The 6 angstroms is about one nanometer so we aggree about the scale of the Hubble Constant. I get different units than you for some reason and I am puzzled by that. Other wise the only thing to resolve is weather or not the Hubble Constant can be measured at local scale and I am quite sure it can be since it is quite a large constant compared to some of the very small stuff you say is measured all the time.

<blockquote id="quote"><font size="2" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by Jim</i>
<br />the only thing to resolve is weather or not the Hubble Constant can be measured at local scale and I am quite sure it can be since it is quite a large constant compared to some of the very small stuff you say is measured all the time.<hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote">

People <i>have</i> looked. But the possibility that the solar system expands at the Hubble rate has been ruled out by planetary radar and spacecraft observations.

OTOH, GPS satellites are so close that we have absolutely no hope of seeing a redshift that small. It is beyond the accuracy of our best spectormeters. -|Tom|-

You cannot expect that anyone will detect an expanding solar system and that is not what Hubble redsfift indicates anyway. You detect the redshift all over the universe and don't interpt the data as I do. The effect is beliefs in things that do not happen but can be made to seem to happen. Tidal theory that is generally accepted as truth is a good example of how real events can be wrongly understood and this is related to Hubble redsift that is observed but not recognized.