- #36
turbo
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I do not think that the concept of space flowing into a gravitational "sink"is at all helpful. You may remember that Fotini Markopoulou (of the Perimeter Institute) predicted a number of years back that EM waves of very high energy (high frequency) should be slowed more than those of lower energy as they propagate through "empty" space because they would interact with the medium through which they propagate more frequently. She hoped that GLAST (which has not yet launched) might demonstrate this. Last year, the consortium operating the MAGIC Cherenkov air-shower telescope determined that a particular gamma-ray burst showed that the high-energy gamma rays showed up 4 minutes later than the lower-energy gamma rays. This is a single observation, and it could be due to conditions at the source of the GRB, but it is intriguing. If MAGIC and eventually GLAST can confirm such delays, we have a revolution in physics in our hands. If the delays are proportional to the redshifts of the sources, then the BB is dead and all of cosmology is up for grabs. If redshift is due to light's interaction with the medium through which it propagates, the Hubble redshift/distance relationship cannot be laid on the doorstep of Doppler-shift/cosmological expansion.jonmtkisco said:Thanks Turbo-1 for the book recommendation.
Your suggested terminology, that "the fine-scale structure of space is conditioned by the matter embedded in it" helps create wiggle room for broader physical explanations, but did you intend it to be broad enough to encompass the idea of physical space flowing dynamically into matter's "gravitational sink" and being absorbed?
Jon