This video demonstrates that a ping pong ball can "float" on a stream of air. The air rushing around the ball creates a pressure low enough to lift and support the ball, even when the ball is not directly over the air...
This video shows a demonstration of buoyancy. A small glass vessel with a hole in the bottom is partially filled with water and placed in a partially filled cylinder of water. The cylinder has a rubber diaphragm which,...
This site provided by the University at Buffalo provides a visual history of science through the use of hundreds of postage stamps. The site includes topics such as astronomy and cosmology, chemistry, modern physics,...
Being the first project proposed by SDSS, this website is more of an introductory course. It first shows the user what information the survey has retrieved, and how to look for it in the database. Then it explains the...
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