John’s 632-mph ride came to a stop in just 1.4 seconds. When it was over, he had suffered a few broken ribs, a pair of busted wrists, and windburn on his face. The blood vessels in his eyes burst, the ...

hydraulics or mechanical systems are in place. The DIN-rail-mounted instrument tests, optimizes, and compares control system parameters including threshold, gain, polarity, and response. When the unit ...