The British Museum: A Brief History of Time Telling
What a pleasant way to spend almost six minutes! This video from The British Museum’s Young Explorer’s Videos goes way back in time to see how we have measured time. First, of course, man 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. Listening to your guide’s English accent is just a plus while you watch the video.
http://www.britishmuseum.org/explore/young_explorers/discover/videos/brief_history_of_time_telling.aspx