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E4
If you're one of those licensed astrophysicists - you know, the type we call when some physics or the other in our house is not working right, and the plum-ber's sick or the carpenter's on leave - and you then have to repair the hyperspace in a hurry yourself, if you're of THAT calling, don't even try the problem being presented here this week because you'll solve it in a few seconds and keep crowing into the sunset for days. But if you're a person who's just interested in the subject for leisure, and maybe at the most discovers a passing law of thermodynamics or two from time to time, you're welcome.
Meaning, hold on to your hats, then hold a pencil three inches above a white sheet of paper under a fluorescent tube light so that the pencil is parallel to the tubelight and observe its shadow. Now rotate the pencil through 90 degrees. Why does the shadow change and almost disappear?
DEAR MS
(The older problem concerned how steam engine locomotives with crankshafts that could come to rest in any position of the wheels they were attached to, could generate the required torque while starting again. - MS)
Wheels-Within-Wheels Dept:
To overcome the problem, the wheels and crankshaft were so designed that there would always be a difference of 90 degrees between the crankshafts of the left and right wheels. So even if one set of wheels came to a halt with shafts at exactly 3 o'clock and 9 o'clock, the position of the crankshafts of the other set of wheels would be exactly at 12 o'clock or 6 o'clock providing ample torque to start.
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