Posted on 11/08/2009 6:07:35 PM PST by SunkenCiv
What if the discrepancy arises from a flaw in our theory of gravity rather than from some provider of mass that we cannot see? In the 1980s physicist Mordehai Milgrom of the Weizmann Institute of Science in Rehovot, Israel, proposed a modification to Newtonian dynamics that would explain many of the observational discrepancies without requiring significant mass to be hidden away in dark matter. But it fell short of describing all celestial objects, and to incorporate the full span of gravitational interactions, a modification to Albert Einstein's theory of general relativity is needed. A review article in the November 6 Science checks in on the status of these modified-gravity theories, including a proposal put forth by physicist Jacob Bekenstein of The Hebrew University of Jerusalem in 2004. Pedro Ferreira, a University of Oxford cosmologist and one of the review paper's co-authors, says that there is good news and bad news for proponents of such models.
(Excerpt) Read more at scientificamerican.com ...
While looking around for this article instead of simply the abstract, I ran across a very good article by one of the major researchers in this field, Dr. Jacob Bekenstein. Written in 2006, it is an overview of where Modified theories Of Newtonian Dynamics /gravity (MOND) were at that time. Someone with less than 3 years of advanced mathematics will get completely lost in that part of the discussion (I get baffled with my 5+yrs), but there is sufficient material other than the hard math that many here might find it tantalizing:
http://xxx.tau.ac.il/pdf/astro-ph/0701848
Have fun. (R-Angel: I would definitely give this link to any physics student, even if a freshman, or a wannabe physicist)
Worth a try. :’)
:’) My pleasure.
/bingo
No, it’s your brother. /rimshot!
The speed of dark must be at least one mile per second faster than the speed of light, because ya never see dark leaving the room when you turn on the lights.
Thanks Kevmo and tlb.
Thanks AFP!
:’)
Gotta be from the Borg cube set on ST:TNG... ;’)
I need to test that.. Let me turn on and off the lights... Where is my stopwatch????
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