Did you guys know this? "The meter is defined as the distance traveled by light in a vacuum in 1/299,792,458 of a second. The standard for the kilogram is a platinum-iridium cylinder kept at the International Bureau of Weights and Standards in Sèvres, France." <A HREF="http://dictionary.reference.com/search?q=measurement" target="_blank">http://dictionary.reference.com/search?q=measurement</A>