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Started by Steve Hamersky
Wed, 25 Jan 1995 03:49
Re: Spin forces
Author: Steve Hamersky
Date: Wed, 25 Jan 1995 03:49
Date: Wed, 25 Jan 1995 03:49
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2477 bytes
Correct me if I've missed something here, but don't we really see electrons as wave-like with a distribution in the region of the orbital that corresponds to the particular energy level? What does centripetal or centrifugal force have to do with it? Steve > > Here's another "spin" on this question: I got into a lengthy discussion with > one of our chemistry teachers. According to him chemistry teachers have > "always" explained the size of the atom in terms of a "balance" between > centripetal and centrifugal forces. In particular, he was somehow using it > to explain the periodic behavior of atomic diameter. I tried to explain to > him that if there is anything in a balance it is the attraction of the > electron to the nucleus vs. the "natural" tendency for the electron to > continue in a straight line (at a tangent to the circle). He countered with > the example of pressure: the cumulative effect of many molecules bouncing > off of a container wall, and suggested that the electrons in an atom had to > be exerting an outward force on the invisible "wall" of the atom since the > nucleus was exerting an inward force on them. As you can see, the discussing > got very detailed, but the chem teacher went away still unconvinced that his > explanation was wrong. In fact, he suggested that he would not stop giving > this explanation to students until I could provide him with a better one. > Anyone interested in biting in to this one? > -- ============= Stephen Hamersky e-mail: hamersky@bluejay.creighton.edu Daniel J. Gross H.S. voice: (402) 734-2000 7700 So. 43rd St. The Lord prefers common people. Omaha, NE 68147 That is why he made so many of us.
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