iTutor Physics Updates

Antigravity matters at WAG*2013 - CERN Courier "The calculable quantum corrections agree with measurements, arguing against antigravity. However, there is a huge discrepancy in the value of the cosmological constant estimated from vacuum particle?antiparticle pair fluctuations, which might question our understanding of the interaction between gravity and virtual particles. As pointed out at the workshop, if all of the theoretical assumptions are valid, then antimatter experiments should not expect to see discrepancies in g at a level larger than 10^?7. Ultimately, the issue must be settled by experiments. To compare with matter, a presentation was given on the 10^?9 precision achievable on g at the Swiss Federal Institute of Metrology (METAS) using a free-fall interferometer. Together with improved measurements of Planck?s constant with a watt balance, this might lead to a re-definition of the kilogram based on natural units" Parsing. There is a question raised as to our understanding of the interaction between gravity and virtual particles based on a huge discrepancy in the value of the cosmological constant so that where quantum corrections agree with measurements arguing against antigravity the issue must be settled by experiments which might lead to a re-definition of the kilogram based on natural units. If we define gravity as curved space and space and time are a continuum what's the effect on time? At the topological edge or most extreme curve of gravity, there is a time warp and time slows down to a virtual standstill. What is the interaction between gravity and virtual particles at that point, are there measurable discrepancies identifiable as due to antigravity?