Liquid Nitrogen and the spinning ping pong ball

Liquid Nitrogen and the spinning ping pong ball

2 holes are punctured at a slanting/glancing angle into a ping pong ball. It is then immersed in liquid nitrogen. The air inside it cools. This lowers the air pressure inside the ping pong ball.

Mercedes creates invisible car, promotes green technology

The new Mercedes F-Cell Hydrogen car boasts a 240 miles driving rage on a single tank of hydrogen and produces no emissions other than water vapour.

Mercedes creates invisible car, promotes green technology

The new Mercedes F-Cell Hydrogen car boasts a 240 miles driving rage on a single tank of hydrogen and produces no emissions other than water vapour.



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