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LIGHT RAYS Rays of light travel in straight lines and pass through the pinhole. These rays are inverted upon entering the camera and project an image, if the box is dark enough.

CAMERA BOX A dark housing in which the light rays can be trapped, and seen, most clearly. You can use any receptacle, from cardboard boxes to tin cans for this purpose.

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MIRROR AND SCREEN As the light rays hit the mirror they are inverted again, so they are viewed the correct way up on the screen.

LENS This is the pinhole, which enables a cone of light to pass into the box. The diameter of the pinhole has a direct bearing on the sharpness of the image. The smaller the hole, the sharper the image.

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