OFFSET
7,2
COMMENTS
In 1960, the meter was redefined in terms of a number of wavelengths of the orange-red spectral line in the electromagnetic radiation emanating from an excited atom of krypton-86.
Since 1983, it has been defined as the distance light travels in a vacuum in 1/299,792,458 seconds. - Jon Perry, Oct 18 2014
LINKS
EXAMPLE
1650763.73...
CROSSREFS
KEYWORD
nonn,cons
AUTHOR
Arkadiusz Wesolowski, Oct 16 2014
STATUS
approved