Do clocks speed up in an expanding Universe?

[johne1618]

However, since the actual clocks we are using in reality do not expand with the universe, those will always tick at the same rate. The rigid clocks measure the cosmic time $t$ and continue to do so at the same rate.

Thinking about it again maybe you're right.

I've been barking up the wrong tree!

 

[johne1618]

Actually I now think there might be some truth in my argument: See my post about energy conservation in an expanding Universe:

https://www.physicsforums.com/showthread.php?p=4753126#post4753126

 

[Mordred]

conservation of entropy and the arrow of time, has been and still is a common argument for an evolving time. Or time reversal in some extreme cases. You didn't quite state that in the other post, however the similarity is there. The arrow of time argument in regards to the second law of thermodynamics has been around for as long as the concept of entropy was first introduced. To my knowledge though its never been universally accepted, nor proven. For one thing disorder to order does not mean time reverses, like the mathematics the model would have one believe. Entropy used as the measure of order.