Questions for World’s coolest clock

By Science News Staff, 17:14 PM April 15, 2014



Before reading:

1.    A century ago, watches and clocks were made using a system of interlocking gears. Explain why the rotation of those gears might tell time. How might the size of those gears affect a clock’s accuracy?

2.    The world’s atomic clocks have a precision most people cannot wrap their heads around. Can you envision why that level of accuracy would be helpful to cell-phone systems or the electric power grid?


During reading:

1.    How many years would have to go by before th...

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