I don't know who else to turn to but Ars... let's hope someone here knows what I'm talking about...<BR><BR>So I'm calculating for the stresses in a shaft that's rotating really fast (this is a problem ...

IN your account (NATURE, May 10, p. 43) of Dr. J. Hopkinson's “James Forrest” lecture at the institution of Civil Engineers, appears the following statement: “Another example, having a certain degree ...

Smaller, streamlined electronics make lubricant-free, low-friction magnetic bearings feasible for more rotating machines. • Magnetic bearings support rotating shafts in five axes without solid or ...

IN order to shut out every possibility of ambiguity, I might have said, instead of "substantial distance between the bearing," "distance between the bearings very great in comparison with the diameter ...