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    knobert1987's Avatar
    knobert1987 Posts: 1, Reputation: 1
    New Member
     
    #1

    Apr 5, 2007, 12:40 PM
    Introduction into Optics
    Draw a sketch to show how a pinhole produces an image on a screen. :confused:
    Evil dead's Avatar
    Evil dead Posts: 116, Reputation: -5
    Junior Member
     
    #2

    Apr 7, 2007, 07:10 AM
    I guess this is about light? Well light is refracted. The smaller the space, the greater the refraction - this proves light's small wavelength

    Image projectors usually use this mechanism to produce large images for as little energy as possible. By using this 'pinhole' thingy, one can use an image, and able to diffract the light to produce a large image.

    If I have not answered your question, please re-write the question and explain.
    asterisk_man's Avatar
    asterisk_man Posts: 476, Reputation: 32
    Full Member
     
    #3

    Apr 8, 2007, 09:47 AM
    You are essentially asking about a camera obscura. I've found this flash demonstration of how it works. I hope it helps.

    Camera obscura
    Capuchin's Avatar
    Capuchin Posts: 5,255, Reputation: 656
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    #4

    Apr 8, 2007, 10:04 AM
    Oh dear evil-dead, there's no diffraction and definitely no refraction going on. It's just all about angles.

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