Journal - Franklin Institute of the State of Pennsylvania (1826)
Franklin Institute, Philadelphia, Franklin Institute (Philadelphia, Pa.) · [Philadelphia : Franklin Institute] · leaf 445
eintensity remains constant. Now watch these two lights as the others are put out in succession.You see they are decidedly getting brighter. Put them in again andyou will see the opposite effect take place. You will see them dim-ming. Now, this is distinctly dimmer than it was a little ago,… … Fig. 17.—Pacinottis machine. It is astonishing when we descend to one lamp and show such a smallvariation in the light. In an ordinary small machine the change ofbrightness would have been decided. In the shunt wound machine,when we increase the number of lights we diminish the intensity ofeach. In…
Science · Technology · Meteorology · Patents
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
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