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phototube
(redirected from phototubes)

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phototube [′fōd·ō‚tüb]
(electronics)
An electron tube containing a photocathode from which electrons are emitted when it is exposed to light or other electromagnetic radiation. Also known as electric eye; light-sensitive tube; photoelectric tube.
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Spectrometer Features: The system utilizes a charged couple device (CCD) detector instead of individual phototubes and slits to capture light emitted when the metal sample is sparked.
Selecting a Spectrometer for Your Operation by Spada, Alfred T. / Modern Casting
The Polaroid MicroCam is a close-up camera that attaches to phototubes of light microscopes for making color or black and white photomicrographs.
CRIME Photography by Rohde, Russell R. / PSA Journal
The array of phototubes determines the shape of this pattern according to which of the phototubes are triggered and what intensity they see.
On the threshold of Cherenkov astronomy; radiation of extremely high ... by Thomsen, Dietrick E. / Science News
 
 
 
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