The analogy with record-player motors is very apt. I've restored a bunch of turntables, and the motors tends to not have been designed with long life in mind. Nor are they designed to provide reasonable torque, which is something you'd think would be a requirement. Like so many other things, the prime design requirement seems to have been, make it cheap. So typically the bearings don't maintain lubrication all that well and they get gunked up pretty quickly, reducing torque, and so the motors can't turn the platter. Not as bad as your one-bearing Sears refrigerator motor, but not great design either.
A middle school team from Rochester, Mich., has again nabbed the grand prize in the annual international Future City Competition, which drew students from 37 regions of the United States, as well as from England and China.
The word “smart” is becoming the dumbest word around. It has been applied to almost every device and system in our homes. In addition to smartphones and smart meters, we now hear about smart clothing and smart shoes, smart lights, smart homes, smart buildings, and every trendy city today has its smart city project. Just because it has a computer inside and is connected to the Web, does not mean it is smart.
Are you being paid enough? Do you want a better job? According to a recent survey Manpower released just before Engineers Week, employers and engineers don't see eye-to-eye about the state of US engineers' skills and experience.
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