Cars use a convex mirror or the right side. It bends outward like the a dome. The image will always be right side up and smaller than the actual object but it allows you to see a wider area than a flat mirror. On the other end are concave mirrors. This is the mirror used at a carnival. The image can be right side up or upside down; larger or smaller than the actual object depending how far you are standing from the mirror.
Eye glasses work on the same principal. Nearsighted people use concave lenses (thicker at the edges than in the middle) Farsighted people use convex lenses (thinner at the edges than in the middle)
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Today's Featured Article - Fire in the Field A hay fire is no laughing matter-well, maybe one was! And a good life-lesson, too. Following World War II many farm boys returned home both older and wiser. One such man was my employer the summer I was sixteen. He was a farmer by birth and a farmer by choice, and like many returning soldiers, he was our silent hero: without medals or decorations, but with a certain ability to survive. It was on his farm that I learned to use the combination hand clutch and brake on a John D
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