Technology and Invention

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Skipping Stones


921

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Solar Powered Cars

Solar power comes from the energy of our Sun, a yellow dwarf star located 93 million miles from the Earth. It is a middle-aged, mid-size star compared to the billions of other stars in the universe. …


3102

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Static Electricity


3103

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Studio Tour


3104

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Suction Cups


1675

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Sunken Slave Ship

The Henrietta Marie's trip began in 1700 in London. The ship stopped in Africa to trade glass beads, guns, and pewter to tribal chiefs in exchange for a human cargo of 190 African slaves and continued …


3106

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Tattoo


3108

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Ted Nugent


925

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Telecommunications

Alexander Graham Bell invented a talking machine that used pulses of electricity to carry sound through copper wires and called it the telephone. Soon after, he tested the photophone, another talking …


1051

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Traffic Control

The popularity of the automobile in the United States is reflected in some incredible statistics: From 1950 to 1986, the U.S. population increased by 60%, while the number of automobiles grew by 257%. …


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