:where <math>\tau</math> is proper time in deep space and <math>t</math> is coordinate time at observer. The effect might be called ''"Hubble Time Dilation"'' (HTD) in honor of its discoverer, and as distinguished from the gravitational time dilation predicted by Einstein. It is the above equation that expresses the esential transition from Newtonian approach in which space and time are distinct, to general relativistic spacetime. It demonstrates also the '''essential relativity of time''' of Einsteinian theory. | :where <math>\tau</math> is proper time in deep space and <math>t</math> is coordinate time at observer. The effect might be called ''"Hubble Time Dilation"'' (HTD) in honor of its discoverer, and as distinguished from the gravitational time dilation predicted by Einstein. It is the above equation that expresses the esential transition from Newtonian approach in which space and time are distinct, to general relativistic spacetime. It demonstrates also the '''essential relativity of time''' of Einsteinian theory. |