The METER is currently defined:?

5 ⤊

The METER is currently defined:?

A) by a standard metal bar kept in paris, France
B) by a platinum bar kept in the National Bureau of standard
C) as of the distance from equator to pole

2007-07-18 18:06:54 · 3 answers · asked by Josh Muller 1 in Science & Mathematics ➔ Physics

3 answers

None of the above. Why don't you just look it up?

2007-07-18 18:18:55 · answer #1 · answered by Frank N 7 · 2⤊ 0⤋

None of the above:
The meter is the length of the path travelled by light in vacuum during a time interval of 1/299792458 of a second.
Answer B was correct until 1960, when it was replaced by a radiation-standardized unit, and then in 1983, when that was replaced by the current definition, above.

2007-07-19 01:17:29 · answer #2 · answered by MooseBoys 6 · 3⤊ 0⤋

c...

:)

2007-07-19 01:13:59 · answer #3 · answered by lost_soul 2 · 0⤊ 2⤋