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# Let's measure time!

### Let's measure time!

This lesson presents timekeeping devices and the types and units of time measurement.

Physics

Author: Jóri Johanna

Reviewer:

Keywords

time, measuring time, clock, minute, second, day, week, month, quarter year, half year, century, millennium, quartz watch, hourglass, water clock, sundial, Pendulum clock, Spring driven watch, smartwatch, atomic clock, sunset, sunrise, clock face, hand, analog watch, digital display, measurement, mathematics, history, astronomy, physics, Middle Ages, environmental studies, nature study

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