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US Army soldier donning an IVAS (Integrated Visual Augmentation System) 1.2 and armed with a suppressed Sig Sauer XM7 with Vortex Optics XM-157 Fire Control system. [4096×2785]
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May 24, 2023
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The Archimedes’ screw is a simple machine used to transport water from a lower level to a higher level. It consists of a screw-shaped surface surrounded by a tube. As the screw is turned, water (red ball) is pushed up along the surface and out the top of the tube. This animation shows how it works.
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