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    Light
    Light
    Light
    Ebook47 pages16 minutes

    Light

    By Louise Spilsbury and Richard Spilsbury

    ()

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    About this ebook

    How did ancient people manage to find light sources? How do we know about light-based theories such as prisms? This fascinating book looks at the historical controversies that surround the discovery and theories of light and tells the stories of the scientists who worked on them. It also examines how the different theories based on light were arrived at, how they were tested, and what impact these theories and discoveries have had on our understanding of science today.
    LanguageEnglish
    PublisherCapstone Young Readers
    Release dateMay 1, 2019
    ISBN9781410992550
    Light
    Author

    Louise Spilsbury

    Louise Spilsbury is an experienced author of nonfiction books for young people. Her writing covers a wide range of topics from animals and science to history and social studies.

    Read more from Louise Spilsbury

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      Book preview

      Light - Louise Spilsbury

      Great Scientific Theories: Light by Louise Spilsbury

      TABLE OF CONTENTS

      Cover

      Title Page

      Testing Theories

      The Nature of Light

      Bending Light

      Inside Light

      Lighting Up the World

      Light Directions

      Quiz

      Timeline

      Glossary

      Read More

      Index

      Copyright

      Back Cover

      TESTING THEORIES

      For hundreds of years, scientists have tried to explain things by coming up with ideas about the way things work. These scientific ideas are known as hypotheses. When scientists believe they have enough evidence to show their idea is correct, the idea becomes a theory.

      picture

      The invention of the sundial shows that people used the position of shadows to find the time of day. The first one was invented by the Egyptians in around 800

      bc

      .

      Right or Wrong?

      Scientists test ideas to see if they are right or wrong. They put together facts produced by these tests to help prove their ideas. Scientists test new ideas all the time, but their ideas are built on the theories of scientists who came before them. Some of history’s greatest scientists completely changed the way people thought about the world.

      Studying Light

      Imagine a world without light. Light is vital for most living things: plants use light to make food, and animals need light to hunt or to see approaching dangers. We need

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