40 websites that will make you cleverer right now. The indexed web contains an incredible 14 billion pages.
But only a tiny fraction help you improve your brain power. Here are 40 of the best. whizzpast.com – Learn about our awe inspiring past all in one wonderful place. khanacademy.org – Watch thousands of micro-lectures on topics ranging from history and medicine to chemistry and computer science. freerice.com – Help end world hunger by correctly answering multiple-choice quizzes on a wide variety of subjects.
HyperPhysics Concepts. Magnets in a copper pipe. 2012 March 12 - The Scale of the Universe Interactive. Discover the cosmos!
Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2012 March 12 The Scale of the Universe - Interactive Flash Animation Credit & Copyright: Cary & Michael Huang. Transparency.jpg (JPEG Image, 2000 × 1200 pixels) - Scaled (54%) Electrical Engineering and Computer Science.