A previous post of mine was on the topic of the Camera Obscura, a forerunner to photography and camera technology. Our granddaughter used the idea to create a project for her school science fair. She obtained three images which were excellent examples of her results. As a proud grandparent, I get to boast.
Camera Obscura is a simple device consisting of a light-tight box with a hole in one wall. The hole allows inverted and reversed images to be cast on the opposite wall. The box can be small or as large as a room. The image below is the basic idea. She used her bedroom as the box.
First, she covered both windows to darken the room. In the center of the cover on one window, she had an aperture to let light into the room. She made three different sizes of interchangeable apertures of diameters from about 1.0″ down to 0.5″. She…
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