Radiometric dating methods are completely unreliable harmony ukulele serial number dating
” You cannot know how long the swimmer took unless you knew the time on the wristwatch when the race started.
Without the starting time it is Actually, knowing the starting time is still not enough.
We also assume that the sample died with the same ratio of C12/C14 as in the atmosphere, this may not be true if they got the carbon in their diet from geological sources, eg by eating a lot of deep sea fish.
And you have to check to make sure he touches the edge at the end of each lap.
The creation rate of C14 (and so the proportion in the atmosphere) depends on the suns activity - so a lot of dates which assumed a constant rate are known to be wrong.
We can now calibrate this out by looking at C14 in tree rings of a known age - but the charge of "C14 dates are wrong" is used by nutters (sorry creationists) either deliberately or in ignorance.
You could describe the atomic workings of the quartz oscillator and how it resonates at a specific and highly stable frequency, and how this is used to accurately pace a timekeeping mechanism.
But without reliable witnesses the accuracy of the watch makes no difference.
It would make no difference how accurate or high-tech the wristwatch was.