Thread: Time question

You said: The vacuum of space is as pure a vacuum as is required for light to transvers it at c.
I have these as... 299,792,458 kilometres per.,sec. or 186,282,397 and is it Miles per sec. ( have I written that correctly ?)
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I replied:Your 'numbers' are slightly off...my numbers are approximations generally in use...the actual numbers are 299,792,458 meters per second and 186,282.397 miles per second.
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Originally Posted by astromark

Just have a look at what is being said here... Its wrong.

Come back at me with the Miles per second velocity and the Kilometres per second velocities...

A mistake is apparent.. Please look again.

Please see --> Speed of light - Wikipedia, the free encyclopedia which states, in part:

"The speed of light in vacuum, usually denoted by c, is a physical constant important in many areas of physics. Its value is 299,792,458 metres per second, a figure that is exact since the length of the metre is defined from this constant and the international standard for time. This speed is approximately 186,282 miles (299,792 kilometres) per second."

Where is the mistake?


ETA: Opps....nevermind....