Abstract
Osglim neon glow lamp.—The current through the tube is intermittent, the frequency being in the audible range if sufficient resistance (10 megohms) is placed in series. No current flows unless the applied voltage lies between two critical values. The voltage drop through the lamp, the product of the current and resistance as measured with d.c. instruments, is independent of the current and is approximately equal to the mean of the two critical voltages. The light intensity is directly proportional to the current.

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