SOLUTION: Explain the advantages in having the meter officially defined in term of the distance light travel in a given time rather than as the length of a specific metal bar.
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Question 413428: Explain the advantages in having the meter officially defined in term of the distance light travel in a given time rather than as the length of a specific metal bar.
(Physic home work) Answer by richard1234(7193) (Show Source):
You can put this solution on YOUR website! Suppose the length of a certain metal bar was to be set at one meter. If the bar heats up significantly, thermal expansion causes the bar to expand in length (also, thermal contraction causes the bar to shrink). This is why the meter isn't defined this way.
