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How is the standard of the meter defined today?

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Answer:

The meter is defined as the distance light travels in vacuum over the time interval 1/c ≈ 3.34 nanoseconds.

First answer by ID2316305474. Last edit by ID2316305474. Question popularity: 0 [recommend question].

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How was the standard meter defined?
"the length of the path travelled by light in vacuum during a time interval of 1/299 792 458 of a second" http://en.wikipedia.org/wiki/Si_units http://en.wikipedia.org/wiki/Meter
How is a meter and other variable are defined today?
1 meter is one forty-millionth of the polar circumference of Earth.
What is the standard meter defined as?
The meter is now defined as 1/299,792,458 of the distancethat light travels in one second in vacuum.
The meter is defined as the?
The meter is presently defined as the distance that light travels in 1/299,792,458 of a second in vacuum.
How was the length of a standard meter defined in the year 1791?
In the 18th century it was felt that a standard unit of length was needed. The French Academy of Sciences decided in 1791 that the meter would be defined by the dimensions of the planet earth. The...