Test can show if the speed of light has changed

Posted by lucodibidil on Monday November 28, 2016 @02:59AM
from the engadget.com dept.

https://www.engadget.com/2016/11/27/test-for-change-in-speed-of-light/

( 4 comments | 13 points | on HN )

Re:Test can show if the speed of light has changed by wcoenen on Monday November 28, 2016 @09:11AM (#13055473)

1 meter is defined as the distance travelled by light in 1 / 299,792,458 seconds. Doesn't this mean that "light slowing down" would be indistinguishable from "space expanding"?

[ Parent | on HN ]

Re:Test can show if the speed of light has changed by oceanswave on Monday November 28, 2016 @05:47AM (#13054627)

Continuous Intrgration for the universe. Interesting.

[ Parent | on HN ]

Re:Test can show if the speed of light has changed by euyyn on Monday November 28, 2016 @06:09AM (#13054710)

Well it doesn't really tell whether it's changed from a moment ago. Rather whether it was much faster when the cosmic microwave background radiation was emitted, almost at the beginning of the Universe.

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Re:Test can show if the speed of light has changed by adtac on Monday November 28, 2016 @07:35AM (#13054985)

Next is coverage (dark matter) ;)

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