Clockworks: From Sundials to the Atomic Second
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|A site about the development of instruments that have measured time over the centuries. Each instrument has a page featuring a description and an illustrated diagram, and most include a QuickTime animation demonstrating how the mechanism works. Iinstruments include: Sundial; Clepsydra; Astrolabe; Candle clock; Sandglass; Weight-driven clock; Spring-driven clock; Pendulum clock; Quartz watch; Cesium atomic clock. See also the article "Measuring Time."|
|Levels:||Middle School (6-8), High School (9-12)|
|Resource Types:||Web Interactive/Java|
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