Technology and Invention

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Earthquake Scientist


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Election Polls And Surveys

Reading or hearing about the results of a public opinion poll has become a common everyday experience for many. Everyone from political candidates to toy manufacturers seems to be trying to find out …


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Electric Cars

Electric cars offer many advantages when compared to gasoline-powered cars. Electric cars run without burning gasoline, and therefore, produce no exhaust pollution. They are relatively quiet during n …


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Electricity

David conducts a study of electrical circuits. Segment length: 9:01 When it comes to understanding electricity, to get to the heart of the matter you must literally get to the heart of matter--the ato …


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Enzyme Cleaners


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Erasers


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Escalator


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Ethanol

As the number of people in the world keeps growing, so does our need for energy. Some energy sources, specifically fossil fuels like coal and oil, are in limited supply. Once we use up what's in the g …


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Firefighting

Would you know what to do if a fire suddenly broke out in your home? You need to understand how fire burns, how heat energy is transferred in a fire, and how to protect yourself and others from it. Im …


908

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Frisbee Physics

In the late 1940s Fred Morrison performed some experiments with flying discs. Some of the discs he experimented with were made out of metal while others were formed out of a new material called plast …


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