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tiredryan
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I was reading that a meter is the length of the path traveled by light in a vacuum in 1⁄299,792,458 of a second. So the speed of light is exactly 299,792,458 m/s. I am wondering what is the uncertainty in our most accurate measurement of the speed of light.
For example say I had a machine that measured the speed of light with 1% uncertainty that I used as a meter reference. The speed of light will still be exactly 299,792,458 m/s, but my meter measurements will have a level of uncertainty.
What is the current lowest uncertainty in our measurements of the speed of light?
Thanks.
For example say I had a machine that measured the speed of light with 1% uncertainty that I used as a meter reference. The speed of light will still be exactly 299,792,458 m/s, but my meter measurements will have a level of uncertainty.
What is the current lowest uncertainty in our measurements of the speed of light?
Thanks.