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the photoelectric effect?
3 other sections not shown
amplitude anode anode current anode voltage atoms basic calibrated capacitor cathode cause Chap color colorimeter connected Courtesy RCA covalent bond cuprous oxide current output d-c amplifier dark current decrease densitometer density dynode emitted energy external circuit F00T CANDLES filters frequency response gas phototubes holes illumination image tube inch increases indicated industrial applications infrared radiation input instrument ionization junction lead sulfide lead sulfide cells light beam light flux light source linear load resistance lumen mask material maximum measured metal meter readings microamperes multiplier phototube N-type negative noise obtained operating voltages output current P-N junction P-type semiconductor photocells photoconductive cells photocurrent photoelectric effect photoelectric gage photoemissive effect photometer photosensitive device photovoltaic cells plate current produced range reflection relay resistor result selenium semiconductor sensitivity shown in Fig shows signal signal-to-noise ratio sound track sound-on-film surface techniques temperature thyratron ultraviolet V0LTAGE vacuum phototubes voltage source volts wavelengths zero