News tagged with energy density

Tiny heat engine may be world's smallest

( -- Steam engines, combustion engines, and diesel engines are all different types of heat engines, which operate by converting heat energy into mechanical work. Although heat engines have existed for a long time, ...

dateFeb 02, 2011 in General Physics feature
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Is dark energy static or dynamic?

(—While hypothesized dark energy can explain observations of the universe expanding at an accelerating rate, the specific properties of dark energy are still an enigma. Scientists think that dark energy could take ...

dateNov 12, 2012 in General Physics feature
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