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Clear Air Turbulence

Anyone who’s ever been on a plane has experienced that uneasy feeling when the plane begins shaking and the seatbelt sign lights up. For the most part, this experience known as turbulence lasts a few minutes. Then, the airplane stabilizes….
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Biography of James Watt

James Watt (1736-1819) was a Scottish engineer best known for his “invention” (actually, re-design and popularization) of the steam engine. He also pioneered the measurement of power – in his case as horsepower, although the current metric unit of power…
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Biography of Homi Bhabha

Homi J. Bhabha (1909-1966) was an Indian nuclear scientist who played an important role in India’s early nuclear power program. (Note that there is another Indian academic named Homi K. Bhabha, who is an accomplished and still-living Harvard literary theorist.)…
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How a Lemon Clock Works

You’ve looked all over the house and you can’t find a battery for your alarm clock. Did you know you can make a battery from a lemon or two? To make this battery you will need: a simple clock that…
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