Rubber sheet analogy - density change

[Pjpic]

When the rubber sheet with the bowling ball in it stretches, the density of the rubber is lowered as the rubber molecules become more widely separated by empty space. Are there particles of space time(?) that are similarily separated by more empty space when when the amount of nearby mass(?) changes?

 

[DaveC426913]

When the rubber sheet with the bowling ball in it stretches, the density of the rubber is lowered as the rubber molecules become more widely separated by empty space. Are there particles of space time(?) that are similarily separated by more empty space when when the amount of nearby mass(?) changes?

No. You are stretching the rubber sheet analogy too far.

()

 

[Pjpic]

No.

If the amount of mass changes space time, what is changing? If there is a measurement and the numbers are changing, what whole does each interger represent?

 

[A.T.]

When the rubber sheet with the bowling ball in it stretches, the density of the rubber is lowered as the rubber molecules become more widely separated by empty space. Are there particles of space time(?)

The rubber sheet usually represents only space, and is therefore misleading. See post #4 in this thread:
https://www.physicsforums.com/showthread.php?t=286926

If the amount of mass changes space time, what is changing?

The distances along space-time dimensions (the metric) change. Space-time is "streched" but there are no "particles of space time" in the model. It is a smooth manifold with a intrinsic curvature, and free falling objects are moving on geodesic paths.