2 ms·
http://physics.nist.gov/cuu/Units/second.html http://physics.nist.gov/cuu/Units/second.html Seconds have been independent of solar time for quite a while.
by andrew-lucker 11y ago
http://physics.nist.gov/cuu/Units/second.html http://physics.nist.gov/cuu/Units/second.html
Seconds have been independent of solar time for quite a while.