Light Speed Uncertainty
Name: William K.
The speed of light has been measured for centuries, and each
research group has reported a central value and an uncertainty about this value.
I believe that it has been common for each>successive measurement, with
significantly smaller error bar than
the previous, to _not_ fall within the
error bar of the previous
group. I believe I once saw a graphic of a set of numbers showing
this sequence of several dozen non-overlapping ranges for c.
Is this story true? Regardless, has anyone actually collected
the successively accepted value for c with error ranges? Where
might I find this talley?
This is a favorite "proof" put forward by Creationists to support some of
their positions regarding the literal historic nature of Genesis. Despite
the fact that serious attempts to measure the speed of light for a couple of
hundred years and it would be hardly long enough to see any change if there
If you do a search on google.com search engine for "speed of light history"
you can follow the ins and outs of the pros & cons.
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Update: June 2012