Definitions
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun physics A
cathode that emitselectrons when exposed tolight
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun a cathode that emits electrons when illuminated
Etymologies
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Examples
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First, an automatic gated power supply system regulates the photocathode voltage, allowing the device to adapt instantaneously to changing light conditions.
Defense Industry Daily Fred Donovan 2010
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Requiring over 460 manufacturing steps, the Generation III intensifier is typically characterized by a gallium arsenide (GaAs) photocathode.
Defense Industry Daily Fred Donovan 2010
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First, an automatic gated power supply system regulates the photocathode voltage, allowing the device to adapt instantaneously to changing light conditions.
Defense Industry Daily Fred Donovan 2010
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Sealed to an input window that minimizes veiling glare, the photocathode generates an electron current which is proximity focused onto a phosphor screen, where the electron energy is converted into green light that can then be relayed to the eye or sensor through an output window.
Defense Industry Daily Fred Donovan 2010
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The photon sensitivity of the GaAs photocathode extends into the near-infrared region, where night sky illumination and contrast ratios are highest.
Defense Industry Daily Fred Donovan 2010
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The photon sensitivity of the GaAs photocathode extends into the near-infrared region, where night sky illumination and contrast ratios are highest.
Defense Industry Daily Fred Donovan 2010
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Requiring over 460 manufacturing steps, the Generation III intensifier is typically characterized by a gallium arsenide (GaAs) photocathode.
Defense Industry Daily Fred Donovan 2010
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Low levels of ambient light pass through a photocathode that converts the light photons to electrons, then amplifies them.
Defense Industry Daily Fred Donovan 2010
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Sealed to an input window that minimizes veiling glare, the photocathode generates an electron current which is proximity focused onto a phosphor screen, where the electron energy is converted into green light that can then be relayed to the eye or sensor through an output window.
Defense Industry Daily Fred Donovan 2010
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Low levels of ambient light pass through a photocathode that converts the light photons to electrons, then amplifies them.
Defense Industry Daily Fred Donovan 2010
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