Phototube - definition of phototube by The Free Dictionary
Also found in: Acronyms
pho·to·tube (fō′tō-to͞ob′, -tyo͞ob′)
An electron tube with a photosensitive cathode.
(Electronics) a type of photocell in which radiation falling on a photocathode causes electrons to flow to an anode and thus produce an electric current
pho•to•tube (ˈfoʊ təˌtub, -ˌtyub)
an electron tube with a photosensitive cathode, used like a photocell.
References in periodicals archive
A separate program, assuming equal phototube
efficiencies, was developed for evaluating the effects of varying different input and model parameters.
and photometer permit determination of the null point with a high degree of sensitivity.
For better timing of showers, a third reflector, this one 7 meters across and reflecting light on a similar phototube
array, will be placed 240 meters from the other two.
The camera attaches to a microscope by sliding its 10X magnification lens directly into the microscope's eyepiece tube or phototube
, allowing it to fit almost all light microscopes.