Mass is independent of gravity. The main use of these measurements is a better measure of the geoid, the equipotential field of gravity that defines mean sea level (even where there is no sea) for altitude measurements.
________________________________ From: "[email protected]" <[email protected]> To: U.S. Metric Association <[email protected]> Sent: Tue, June 29, 2010 12:03:43 AM Subject: [USMA:47992] Nice BBC article that is all metric (and my show the path to redefining the kilogram?) This science article from the BBC uses metric only (which is nice to see): http://news.bbc.co.uk/2/hi/science/nature/8767763.stm It also makes me wonder if being able to measure gravity this finely could be part of a redefinition of the kilogram to replace the current physical artifact. Or am I totally off base? -- Ezra
