Did you know: Galileo discovered lunar mountains and craters
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  • Pinhole Camera

    Posted on February 7th, 2012 rudrarup No comments

    How does a camera change a big scene into a small picture? To see for yourself, make a pinhole “camera.” Start with an empty cardboard box. Punch a hole in the center of the bottom by pushing a pencil through it.

    Now place a piece of waxed paper over the open end of the box and hold it there with tape or a rubber band. Your pinhole camera is complete.

    Sit in a dim room that has a bright object in it, such as a lamp or a window that lets in daylight. Lay a blanket over your head and the pinhole camera.

    Hold the camera at arm’s length, with the waxed paper toward you and the punched-out hole sticking out from under the blanket. Point the camera at the bright object. On the surface of the waxed paper, you will see a picture of the object—backward and upside down. Read the rest of this entry »