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From Wikipedia: "Since 1983, [the metre] is defined as the distance travelled by light in vacuum in 1⁄299,792,458 of a second." This is the currently used definition.

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Q: How was meter defined in 1983?
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What terms was standard meters defined in on 1983?

In 1983, the standard meter was defined in terms of the speed of light. Specifically, the meter was defined as the length of the path traveled by light in a vacuum during a specific fraction of a second.


What is the meter defined by?

the meter is defined as the basic unit of the metric unit.


How was meter first defined?

the meter is defined as distance that travels 1/299792458


The meter is defined as?

A meter is currently defined as the length of the path travelled by light in vacuum during a time interval of 1 / 299,792,458 of a second.


Why is a meter a meter long?

A meter is defined as the distance travelled by light in free space in 1/299,792,458th of a second.


Why do scientists keep revising the definition of the meter?

As scientists study new areas the meter is involved in these new areas and new definitions in terms of the new areas are defined. The original meter was defined in terms of the earth studies, as electricity was studied, the speed of light became important and the meter was defined in terms of the speed of light. As science expands the definitions of the meter will expand.


How was the meter defined in 1971?

Until 1983 the metre was defined at one ten millionth of the distance from the equator to the north pole. That definition has changed to reflect greater understanding and knowledge. Originally, the meter was based on the distance between the equator and the north pole along the meridian that went through Paris. That distance was set at 10,000 kilometers and the metre was ten millionth of the distance.


How was the length of a meter created?

The meter was defined by the French Academy of Sciences as the length between two marks on a platinum-iridium bar, which was designed to represent one ten-millionth of the distance from the Equator to the North Pole through Paris.In 1983, the meter was redefined as the distance traveled by light in free space in 1⁄299,792,458 of a second.


Standard length of a meter in 1983?

100cm


The meter is defined as the what traveled by what in absolute vacuum in 1299792458 of a second?

The meter is defined as the distance traveled by ? in absolute vacuum in 1299792458 of a second.


How was the length of a standard meter redifined in 1983?

it wasnt


How is a meter and other variable are defined today?

1 meter is one forty-millionth of the polar circumference of Earth.