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Science Reference Center
Full-text articles to support research in applied sciences, biology, chemistry, earth and space science, and energy. Includes the Science Image Collection, a database of high-quality science images from National Geographic, UPI, Getty, NASA, and Nature Picture Library.
Author
Language
English
Description
How do humans perceive time? What are the three different kinds of days? What is a shadow clock and how does it work? Using easy-to-find materials, you can conduct these fun and simple experiments to learn about the science behind time and how it has been measured throughout history.
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