Sunday, August 31, 2008

Physicist Patricia Burchat sheds light on two basic ingredients of our universe: dark matter and dark energy.

Comprising 96% of the universe between them, they can't be directly measured, but their influence is immense.

16 minutes, TED Seminar. Includes a practical experiment (with a wine glass!) to demonstrate Gravitational Lensing (an effect predicted by Einstein).

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