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Fear burns memories into our brain, and new research by University of California, Berkeley, neuroscientists explains how.
What's the scale of things here?
From prokaryotes to eukaryotes
Engine design is at the confluence of three factors: concerns about how car emissions will affect the environment; rising gas prices and the need to conserve fossil fuel resources; and the realization that the hydrogen-powered car -- be it powered by a hydrogen fuel cell or by hydrogen internal combustion -- will not deliver on its promise in the near future. As a result, many engineers are giving more interest to improving the internal combustion engine. The Quasiturbine engine, patented in 1996, is just such an improvement.
Despite its incredibly low density, aerogel is one of the most powerful materials on the planet.
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This image is a “balloon race”.
Animation showing a six-position Geneva Drive in operation The Geneva drive or Maltese cross is a gear mechanism that translates a continuous rotation into an intermittent rotary motion. The rotating drive wheel has a pin that reaches into a slot of the driven wheel advancing it by one step.