TOYS, TRICKS, AND TEASERS Friction. There’s the rub.
» Illusions and paradoxes never cease to fascinate.
When we perceive something that seems to behave in an unexpected or impossible way, we realize that it’s something new to our experience and want to figure out what’s going on. Visual illusions are the obvious example, but there are also tricks of physics and mechanics that seem paradoxical when first experienced. They challenge us to “puzzle out” what makes them work and are often the basis of magic tricks, toys, and illusions, or, at least, instructive physics demonstrations. We’ll explore some of these tricks that may not be familiar to readers, with an emphasis on those that you can do or make yourself. I’ll include ...
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