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How Levers Work
Jim Mezzanotte
Paperback (Weekly Reader/Gareth Stevens Pub, July 1, 2006)Demonstrates how levers help to move loads by pivoting on a fulcrum, and provides examples of some practical uses for levers.
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How Levers Work
Jim Mezzanotte, Susan Nations, Debra Voege
Library Binding (Weekly Reader/Gareth Stevens Pub, Aug. 30, 2006)Demonstrates how levers help to move loads by pivoting on a fulcrum, and provides examples of some practical uses for levers.
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How LEDs Work
James Roland
eBook (Lerner Publications TM, Aug. 1, 2016)Have you ever wondered how the lights in your alarm clock work? Or have you ever considered how that tiny red light in your TV remote control sends a signal that helps you find your favorite show? What these and countless other bright devices have in common is a light-emitting diode, or LED. But how does an LED work? How is it different from other lightbulbs? Explore the key concepts that make up an LED, including semiconductors, electrons, color, and more. Learn how LEDs are used in electronics, to light homes, and even to grow food for astronauts!
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How Lasers Work
Ryan Jacobson, Glen Mullaly
Library Binding (The Childs World Inc, Aug. 1, 2011)Presents information about lasers, including their history, the science behind them, how they work, and how they are used.
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How LEDs Work
James Roland
Library Binding (Lerner Publications, Aug. 1, 2016)Have you ever wondered how the lights in your alarm clock work? Or have you ever considered how that tiny red light in your TV remote control sends a signal that helps you find your favorite show? What these and countless other bright devices have in common is a light-emitting diode, or LED. But how does an LED work? How is it different from other lightbulbs? Explore the key concepts that make up an LED, including semiconductors, electrons, color, and more. Learn how LEDs are used in electronics, to light homes, and even to grow food for astronauts!
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How It Works: Levers
Angela Royston
Hardcover (Heinemann Educational Books - Library Division, Nov. 1, 2000)None
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Levers at Work
Dawn Lamachia
Paperback (Enslow Publishing, Aug. 1, 2015)"Describes levers, including the history, function, and everyday uses."--
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How Levers Work
Jim Mezzanotte
Hardcover (Weekly Reader Early Learning Library, Aug. 30, 2006)None
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Levers at Work
Dawn Lamachia
Paperback (Enslow Publishing, March 15, 1674)None
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How Levers Work
Jim Mezzanotte
Paperback (Weekly Reader Early Learning Library, March 15, 1821)None
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Levers at Work
Dawn Lamachia
Paperback (Enslow Publishing, March 15, 1806)None
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How It Works: Levers
Angela Royston
Paperback (Heinemann Educational Books - Library Division, Aug. 6, 2001)None
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