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PBS
Pbs Learning Media: Diamonds: The Science Behind the Sparkle
This illustrated essay from the NOVA Web site explains why the atomic structure of a diamond slows down light and produces a sparkle more brilliant than from any other colorless substance.
PBS
Pbs Learning Media: Galileo: His Place in Science
Einstein called Galileo the "father of modern physics." This media-rich essay from the NOVA Web site looks at Galileo's quest to understand the mathematics of motion.