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Light and color introduction

Photo © Exploratorium
Photo © Exploratorium

All we see is light. Your face in the mirror, the trees on your street, that donut in the bakery window—you can see them because light bounces off of them and enters your eyes. Our eyes are designed to detect light and analyze the information it carries about the world around us.
In the hands-on activities that follow, you’ll investigate some of the amazing properties of light. You can bend light (called refraction when it passes through lenses or diffraction when it bends around an edge or passes through a slit), bounce light around using mirrors (also known as reflection), and explore the multicolored potential of shadows.
It’s all around us, and while you may not be able to hold it in your hands, seeing is believing—light is pretty amazing stuff.

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  • leaf red style avatar for user я̿€̿ρ̿Ł̿ɪ̿т̿Ǻ̿ƶ̿
    How can shadows be different colors than grey to black?
    (10 votes)
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  • leafers tree style avatar for user shozab.zaidi96
    There is a word for rainbow colours what is the word and what the word means?
    (2 votes)
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  • piceratops seed style avatar for user Laura Klink
    What about light and the relationship it has with color?
    (2 votes)
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    • spunky sam blue style avatar for user Alfred
      Well, do you know the relationship that a guitar has with music? You strike a string on the guitar and your ear picks up the vibrations. Sometimes those vibrations are low pitched and sometimes they are high pitched. The difference is random. You need to press the string against a fret to get different sounds. The pressing of your finger is shortening the string and thus causing the vibration to be faster (higher).
      The same is true of light. Light travels as a particle wave (or wave particle) that bounces off of objects. Some property of the object causes the light wave to slow down a little or a lot. The effect is that the light bounces off the object and arrives at our eye at different wavelengths.
      (3 votes)
  • hopper jumping style avatar for user The Onion Router
    Is the curved peace a prism?
    (2 votes)
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  • male robot donald style avatar for user Aidan Smith
    if you take a prism and shine a purple light in it, will it shoot blue and red lights out of the prism?
    (1 vote)
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  • aqualine seedling style avatar for user jabril81123
    what will happen if direct sunlight hit a glass window?
    (1 vote)
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  • leaf red style avatar for user johannasafadi
    i know this might not be a usefull question ... but ...
    in the next ¨chapter¨ does it mention why it is that humans see colors and other animals dont ?
    (1 vote)
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  • primosaur seedling style avatar for user carlyabc84Kittytails
    Can I get more info on this
    (1 vote)
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  • winston baby style avatar for user brownveronica83
    what are all the colors of light
    (1 vote)
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  • leaf blue style avatar for user Karma Choden
    why is there light in the world
    (1 vote)
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    • mr pants teal style avatar for user ibrahimhaqq
      the sun orbits around the earth shining its light into our world. the sun produces light and energy through the fusion of hydrogen into helium in its core. stars like our sun are about the most powerful beings of our solar system producing light, they are one of the main reasons we can see.on the side there are many other reasons light can help you see. the question "why is there light in the world ?" is very complicated to answer so you should put it more like "how is there light in the world?" )
      (1 vote)