Sentence examples for by light in a from inspiring English sources

A meter, for example, is the distance traveled by light in a vacuum in 1/299,792,458 of a second.

The metre is now thus defined as the distance traveled by light in a vacuum in 1/299,792,458 of a second.

The metre, which used to be calibrated to the charming and comprehensible platinum-iridium metre bar is now defined as the distance travelled by light in a vacuum in 1⁄299,792,458 of a second.

That is something very small indeed many orders of magnitude smaller with respect to the kilogram than, say, a metre is compared with the distance travelled by light in a second.

Over the years, the official meter has been redefined several times and is now "the length of the path traveled by light in a vacuum during a time interval of 1/299,792,458 of a second".

The following base units have been adopted and defined: Since 1983 the metre has been defined as the distance traveled by light in a vacuum in 1/299,792,458 second.

Current definition: The metre is the length of the path travelled by light in vacuum during a time interval of of a second.

In 1983 the metre was defined as "the length of the path travelled by light in vacuum during a time interval of of a second", fixing the value of the speed of light at by definition, as described below.

To do this, they redefined the metre as: "The metre is the length of the path travelled by light in vacuum during a time interval of 1/ of a second".

For instance, the international measurement standard of a meter is defined as the length of the path travelled by light in vacuum during a time interval of 1/299,792,458 of a second.

The metre became a derived unit, equaling the distance traveled by light in 1/299,792,458 of a second (see International System of Units).