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Tangle-web spiders can catch prey up to 50 times their size thanks to their pulley system-like hunting strategy. Photo by Emanuele Olivetti It sounds like a scene out of a horror movie. A hapless ...

Introduction Before the industrial age people largely had to rely on muscle power to move and lift heavy objects. Simple machines such as pulleys, levers and ramps made it easier for humans to lift ...

Have you ever seen a flag being raised, or wondered how a mechanical clock works? Let’s take a look at some of the simple mechanisms that they use. Pulleys and gears. When a flag is raised, it will ...