photoelectric photometer electronic photometerphotoelectric pickupphotoelectric pinhole detectorphotoelectric pulse generatorphotoelectric register controlphotoelectric sensitivityphotoelectric timerphotoelectric transducerphotoelectric tristiumulus colorimeterphotoelectric turbidimeter photoelectric opacimeterphotoelectric work functionphotoelectromagnetic effectphotoelectronphotoemissionphotoemissivephotoemitterphotoemitter cathodephotoflash unitphotogeneratorphotogoniometerphotographic transmission density optical densityphotohermoelectric effectphotoionization atomic photoelectric effectphotolithographyphotoluminescencephotomagnetic effectphotomagnetoelectric effectphotomaskphotometerphotometryphotomixerphotomultiplierphotomultiplier counterphotomultiplier tube multiplier phototube electron multiplier phototubephotonphoton couplingphoton emission spectrumphoton energyphoton fluxphotonegativephotonephelometerphotonic sublayerphotopositivephotorelayphotoresistphotoresist layerphotoresistancephotoresistorphotosensitive recordingphotosphere
