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May 01, 2012

How Things Work Encyclopedia PDF

The pages of this book have special features that will show you how to get your hands on as much information as possible! Any new idea or product that has been created by a person can be called an invention. Inventions change the way people live their lives—they make things safer, easier, faster, or cheaper. Inventions
Accidental ideas Inventions can happen by accident. Chemist John Wesley Hyatt was trying to find a material for billiard balls. He spilled a liquid that dried into a tough, flexible film—“celluloid” that was later used as camera film. Knowing your stuff Technology is the science of how things work. The inventors of these shoes knew that a coiled spring is a source of stored energy. They used this technology to make powered shoes.


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