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movable fluid, (approximately) a picture
Engineering. Controlling the speed of fluids is not easy. Engineers working on this issue always face the same problem. Either they use external stimuli such as heat or light and the speed achieved is very slow, or they have to rely on such complex equipment that their use remains confined to laboratories. However, researchers have taken it a step further by developing a system that is simple as well. Called Hydrobot, their prototype consists of a ball of iron, about a millimeter in diameter, …
Science Photo Library via AFP – Luis Costa Pinto/TSIMNE.org – Dr. – Yifan Si
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