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Submarine Cloaking

• arclein
Even if the metamaterial was able steer water around the vessel, there is a bigger problem: the more the water is steered, the more it will slow down. It is this change in velocity that is responsible for the frothy disturbance at a boat's wake. Therefore, suggest the researchers, the metamaterial would need to actively pump water to counteract the loss of speed. Since this pumping would have to be done throughout the m

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