Diode

Startled by the intense beam he produced when he rigged the diode to his bike generator, he recalls saying to his partner that a child could read by the light of a single diode.

I propose to give the name diode to a tube with two electrodes.

If a crystal or a diode is used, the amplifier-voltmeter combination may be used with an amplitude-modulated source; or with a c-w source, the detector may be connected to a microammeter or galvanometer as an indicating device.

In this circuit when the diode is forward biased, the voltage across the diode remains fairly close to the diode's barrier potential.