. It is exact because by international agreement a metre is defined as the length of the path travelled by light in vacuum during a time interval of 1. The speed of light in vacuum commonly denoted c is a universal physical constant that is important in many areas of physicsIts exact value is defined as 299 792 458 metres per second approximately 300 000 kms or 186 000 mis.
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It is exact because by international agreement a metre is defined as the length of the path travelled by light in vacuum during a time interval of 1. The speed of light in vacuum commonly denoted c is a universal physical constant that is important in many areas of physicsIts exact value is defined as 299 792 458 metres per second approximately 300 000 kms or 186 000 mis.
The speed of light in vacuum commonly denoted c is a universal physical constant that is important in many areas of physicsIts exact value is defined as 299 792 458 metres per second approximately 300 000 kms or 186 000 mis.
It is exact because by international agreement a metre is defined as the length of the path travelled by light in vacuum during a time interval of 1. It is exact because by international agreement a metre is defined as the length of the path travelled by light in vacuum during a time interval of 1. The speed of light in vacuum commonly denoted c is a universal physical constant that is important in many areas of physicsIts exact value is defined as 299 792 458 metres per second approximately 300 000 kms or 186 000 mis.
