Despite ongoing advances within the subject of underwater remotely operated autos (ROVs), the gadgets have remained tethered to the floor by way of communications cables. Such will not be the case with the ExRay, nonetheless, which makes use of gentle as a substitute.
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Because radio waves don’t journey effectively by means of water, ROVs at present should be linked to their surface-located operator by way of an extended cable that sends instructions all the way down to the car, and that relays real-time video again up. In many circumstances the cable additionally supplies energy to the ROV, though some fashions are powered by their very own onboard batteries.
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Source: Ben Coxworth
Photo credit score: Press