Oscillator Armstrong

At higher overpotentials the nucleation rate increases faster than the step (Chapter 3) propagation rate, and the deposition of each layer proceeds with the formation of a large number of nuclei. This is the multinuclear multilayer growth. Armstrong and Harrison (13) have shown that initially, the theoretical current-time transient for the two-dimensional nucleation (Fig. 7.7) has a rising section, then passes through several damped oscillations, and finally, levels out to a steady state. 

Coleman GJ, Harper S, Clarke JD, Armstrong S 1982 Evidence for a separate meal-associated oscillator in the rat. Physiol Behav 29 107—115... 

Claus, Armstrong and Baeyer.—Still other formulas have been suggested on account of this difficulty, each endeavoring to avoid the necessity of oscillation in order to satisfy the four valencies of carbon. One of these was suggested by Claus and called the diagonal formula and another by Armstrong and Baeyer and known as the centric formula. 

The Armstrong oscillator on page 181 can be modified to produce only a single "pulse," which would be half of a complete up-and-down sine wave. This is called a "blocking oscillator" or a "one-shot oscillator," and it would be similar to the relay-operated pulse generator on page 134, using the NC contacts and... 

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