photodiode
A semiconductor two-terminal component whose electrical characteristics are light-sensitive.

photodiodes
plural of photodiode

photodrome
An apparatus consisting of a large wheel with spokes, which when turning very rapidly is illuminated by momentary flashes of light passing through slits in a rotating disk. By properly timing the succession of flashes, the wheel is made to appear to be motionless, or to rotate more or less slowly in either direction.

photodromes
plural of photodrome

photoduplicator
A machine for photoduplication; a photocopier.

photoduplicators
plural of photoduplicator

photoeclector
An eclector fitted with a light that is used to attract insects

photoeclectors
plural of photoeclector

photoelectrograph
An electrometer registering by photography.

photoelectrographs
plural of photoelectrograph

photoelement
The part of a photoelectric device that converts light energy into electricity

photoelements
plural of photoelement

photoenlarger
A photographic enlarger

photoenlargers
plural of photoenlarger

photoferroelectrics
The study, design and manufacture of photoferroelectric devices

photoflash
A lamp that emits a brief flash of bright light; used to take photographs in a dark environment
A flashbulb

photoflashes
plural of photoflash

photoflood
A lamp that produces a broad beam of continuous bright light; used to illuminate a photographic subject

photofloods
plural of photoflood

photogastroscope
A device used to take photographs of the interior of the stomach.

photogastroscopes
plural of photogastroscope

photogate
A device that measures the time between events that interrupt an infra-red beam

photogates
plural of photogate

photogenia
The various photographic techniques, such as lighting, focus and framing, used to make a subject look more attractive.

photogrammeter
A phototheodolite, or a camera designed for use in photogrammetry.

photogrammeters
plural of photogrammeter

photographica
Collectable photographic equipment.

photographometer
An instrument for determining the sensibility of the plates employed in photographic processes to luminous rays.

photographometers
plural of photographometer

photographone
A device, consisting essentially of an electric arc and a camera, by which a series of photographs of the variations of the arc due to sound waves are obtained for reproduction by means of a selenium cell and a telephone.

photographones
plural of photographone

photoheliograph
A heliograph, with a camera attached, used to photograph the Sun.

photoheliographs
plural of photoheliograph

photoinjector
A device that uses a photocathode to generate a beam of electrons

photoinjectors
plural of photoinjector

photointerrupter
An optical device that acts as a switch when a beam of light is blocked by a foreign object

photointerrupters
plural of photointerrupter

photoisolator
An optoisolator

photoisolators
plural of photoisolator

photomacroscope
A macroscope equipped with a camera

photomacroscopes
plural of photomacroscope

photometrograph
An instrument for recording the amount of daylight.

photometrographs
plural of photometrograph

photomicroscope
An instrument (microscope plus camera) that is used for making photomicrographs.

photomicroscopes
plural of photomicroscope

photomultiplier
A device, normally in the form of a tube, that uses a photocathode to convert photons into photoelectrons which are then amplified.

photomultipliers
plural of photomultiplier

photonephograph
A nephoscope registering by photography, typically consisting of a pair of cameras used simultaneously.

photonephographs
plural of photonephograph

photooxidizer
A device used in photooxidation

photooxidizers
plural of photooxidizer

photopaper
Photographic paper; paper coated with light-sensitive chemicals, used for making photographic prints on traditional film cameras.

photopapers
plural of photopaper

photoperimeter
An instrument for measuring the extent of the field of vision.

photoperimeters
plural of photoperimeter

photophane
A historical photographic process formerly used for large-volume mechanical printing.
A print produced by this process.

photophanes
plural of photophane

photophone
A device that transmitted sound on a beam of light.
A stills-only cameraphone. Used to distinguish from video-capable camera cellphones and camera-less cellphones.
A combination highly-capable digital camera and smartphone

photophones
plural of photophone

photopiezoelectrics
The study, design and manufacture of photopiezoelectric devices

photoprinter
A device for producing photoprints.

photoprinters
plural of photoprinter

photoradiometer
A device that is used to measure the penetration power of ionizing radiation

photoradiometers
plural of photoradiometer

photoreceiver
photodetector

photoreceivers
plural of photoreceiver

photorecovery
The recovery / restoration of DNA in skin damaged by exposure to light
The recovery of photographic images previously deleted in a digital camera, PC or similar device

photorefractor
A device that carries out photorefraction

photorefractors
plural of photorefractor

photoregulator
A photochemical regulator

photoregulators
plural of photoregulator

photorespirometer
A device that measures respiration as a function of light level

photorespirometers
plural of photorespirometer

photoretinoscope
Synonym of retinoscope, but especially one that uses a particular form of light (such as infrared)

photoretinoscopes
plural of photoretinoscope

photoscanner
A device which photographically records the gamma rays passing through tissue that has been injected with a radioactive material.

photoscanners
plural of photoscanner

photoscope
Any of various instruments employed for the observation of light, luminous effects, or photographs.
Any of various devices to aid in vision.

photoscopes
plural of photoscope

photoscreener
A device used in photoscreening

photoscreeners
plural of photoscreener

photosedimentometer
A device used to measure the particle size distribution during photosedimentation

photosensor
A photodetector

photosensors
plural of photosensor

photoserigraph
A serigraph made from an existing photograph

photoserigraphs
plural of photoserigraph

photospectroheliograph
spectroheliograph

photospectroheliographs
plural of photospectroheliograph

photospectrometer
Synonym of spectrophotometer.

photospectrometers
plural of photospectrometer

photospectrophotometer
Synonym of spectrophotometer.

photospectrophotometers
plural of photospectrophotometer

photospectroradiometer
A spectroradiometer with a built-in camera

photospectroradiometers
plural of photospectroradiometer

photospectroscope
A device for performing photospectroscopy.

photospectroscopes
plural of photospectroscope.

photostimulator
A device used in photostimulation

photostimulators
plural of photostimulator

photostimuli
plural of photostimulus

photostimulus
The stimulus involved in photostimulation

photoswitches
plural of photoswitch

photosynthometer
An instrument for measuring photosynthesis.

photosynthometers
plural of photosynthometer.

phototelephone
An early telephonic device for transmitting a photographic image.

phototelephones
plural of phototelephone

phototransistor
Any semiconductor device whose electrical characteristics are light-sensitive.

phototransistors
plural of phototransistor

phototypesetter
A machine used in phototypesetting.
One who phototypesets.

phototypesetters
plural of phototypesetter

phrasebook
A book containing common phrases in two or more languages, used to learn a foreign language.
A usually pocket-sized book consisting of everyday expressions and vocabulary in two languages and intended for travellers who wish to communicate with locals while in other countries.

phrasebooks
plural of phrasebook