On 2006-11-26 15:16, Randall R Schulz wrote:
<snip> "The duration of 9,192,631,770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the cesium-133 atom"
Whatever that might mean to nearly everyone on this list except me :-)
Other metric system units have similarly objective definitions.
They are actually highly subjective -- they all depend on a specific measuring apparatus which depends crucially on the electromagnetic interaction (the only one we can observe directly). To suggest that the gravitational interaction must necessarily have the same fundamental definition of length (or time) is highly presumptive, hence subjective. Oh, btw, welcome to opensuse-physics :-) -- The best way to accelerate a computer running Windows is at 9.81 m/s² -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org