Is this useful knowledge?
Today, the most precise clocks in the world, atomic clocks, are able to use principles of quantum theory to measure time. They monitor the specific radiation frequency needed to make electrons jump between energy levels.
by 
Anonymous
ANSWERS: 3
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it's important in quantum physics, but Heisenberg's uncertainty principle throws a wrench in precision measurements.
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i think so
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It is a good "background," fact. Much of the world depends on the function of time and its coordination. A prime example is the Global Positioning System.
Linda Joy 
pearllederman 
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