Journal of the Franklin Institute, Vol. 190

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Excerpt from Journal of the Franklin Institute, Vol. 190: Devoted to Science and the Mechanic Arts, Nos. 1135-1140 (95th Year), July-December, 1920A family of saturation curves, each one corresponding to a certain applied fixed potential between cathode and anode, te sults, as shown in Fig. 10, where the first parts of the several curves combine to form a single curve following Richardson's law. These curves 2 Show that the thermionic current does not continue to increase as expected, because the space surrounding the hot filament is capable of carrying only a certain current for a given potential difference. The explanation offered is that the electrons surrounding the filament soon set up a space charge which repels new electrons escaping from the filament, causing some to return to the filament.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully, any imperfections that remain are intentionally left to preserve the state of such historical works.