Everything has a timeline

TiMELiNES

1983

Metre tied to speed of light

The metre is redefined by the distance light travels in vacuum in a fixed fraction of a second.

Canonical milestoneParis, France1 timeline

Context

Appears In

TimelineTimeline of Measurement

Position 18

Authority

Sources

BIPMConfidence 99%

Taxonomy

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physicsmeasurementsi