Site of the Day A Brief History of Time Telling from The British
Museum’s Young Explorers goes way back to see how we have
measured time. First, of course, humans used the sun and moon as
ways to determine the passage of time. You will see several of
the sun dials in the British Museum’s collection. Next you’ll
see mechanical clocks, chronometers, and,finally, atomic clocks.
The video explains how time pieces have become more and more
accurate over history and why that is important. courtesy of
Knovation