How do machines like MRI that use large freely rotating pieces with sensors and tools attached deliver power and send/recieve data, I don’t think they would have miles of cables on a spool thats ready to be wound back and forth?
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First generations of CT scanners (think 1980s) were actually using cables. They were doing 400 degree rotation (clockwise 20deg to get up to speed, 360 to scan, 20 to slow down and then same sequence counter clockwise) but slip rings have replaced them long ago.
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