Richardson plot

Richardson plot

[′rich·ərd·sən ‚plät]
(electronics)
A graph of log (J / T 2) against 1/ T, where J is the current density of electrons leaving a heated conductor in thermionic emission, and T is the temperature of the conductor; according to the Richardson-Dushman equation, this is a straight line.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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The diagram of log([N.sub.i]) as function of log(1/[r.sub.i]) is drawn obtaining a so called Richardson plot. If the Richardson plot is a straight line then the measured object is fractal and the slope of the plot is it's compass dimension.
Although the obtained results show that the analyzed images do not have true fractal behavior (the resulted Richardson plot is not a rigorously straight line), the goal is to find correlations between parameters [p.sub.1]' and [p.sub.3]' on one hand and the surface roughness on the other hand.