Re: Metric Time (was Re: Why not 13 months? (Was La Systeme Metrique))

Woodhams (
4 Oct 1995 23:37:54 GMT

stgprao@seismic.sugarland.unocal.COM (Richard Ottolini) writes:
>5) An absolute measure of duration can be derived from fundamental physical
>constants such as Planck's unit of action and the speed of light. This very
>small unit is called Planck time.

>6) One could define a Planck second or Planck day in some multiple of Planck time-
>either a decimal power for us ten-fingered humans, or a power of two for the
>computational world. That way the Planck second would be convenient for humans and
>absolutely precise for science.

This doesn't work because G (gravitational constant) is only known to
one part in about 2000, and the Planck time depends on G.

Michael W.