Physics education research, electronic materials, and the musings of Christopher Moore, Ph.D.
Physics education research, electronic materials, and the musings of Christopher Moore, Ph.D.
You are not logged in.
Is it always necessary to divide time into equal increments? Start with the well known E=mc^2 of Einstein. Let c= dx/dt where is the displacement of a photon from some point of origin. Then by simple algebra: dt=dx/+-sqrt(E/m) . Time grows shorther as more energy is present. Is it possible that in a region of space where no energy is moving from one location to another time does not elapse? Bill
Offline
When you use simple algebra like that, it also makes something else jump out, if there is energy, but no mass, there is no time passing. So that means if there is no mass, or no energy, time would be stagnant.
Offline
Yeah. A derivative with respect to a variable can't be separated like that algebraically. The dividing line doesn't represent division.
Offline
doesn't make sense to talk about travel though time without referring to an object (matter or photon or something).
empty space doesn't age.
Offline
west wrote:
doesn't make sense to talk about travel though time without referring to an object (matter or photon or something).
empty space doesn't age.
Photons do not move in time. They don't even move through space. Wholesale was right, you can only talk about moving clocks when concerning matter.
However with that said, GR permits timeless solutions. True time evolution does not exist in GR, motion is really described by the symmetry of the theory and world lines are static. This has been known as the Wheeler de Witt equation which is obtained from quantizing Einsteins field equations.
Offline
