photocopy |
a photographic copy of a document or other printed material. [2 definitions] |
photodetector |
an electronic device containing one or more photodiodes that converts photons to electrons. |
photodiode |
a device consisting of a semiconductor sensitive to light that functions as a photoelectric cell. |
photoduplicate |
to make a photographic copy or copies of; photocopy. [2 definitions] |
photodynamics |
(used with a sing. verb) the effect of light on the growth and movement of plants or other organisms. [2 definitions] |
photoelasticity |
the characteristic of some transparent materials to be measured for strain by observing their double refraction of polarized light when placed under a mechanical stress. |
photoelectric |
of or relating to the electrical or electronic effects of light or other radiation. |
photoelectric cell |
an electric cell in which the force of the current changes according to the variations of light or other radiation falling on it; electric eye. |
photoelectron |
an electron whose emission from a substance is induced by the absorption of electromagnetic radiation such as visible light. |
photoemission |
the emission of photoelectrons from a surface, esp. a metallic one, induced by the absorption of electromagnetic radiation such as visible light. |
photoengrave |
to produce or reproduce using the technique of photoengraving. |
photoengraving |
a printing process by which an image is transferred photographically onto a relief printing plate. [3 definitions] |
photo finish |
the finish of a race in which the contestants are so close that one or more photographs taken at the moment of crossing the finish line must be examined to determine the winner. [2 definitions] |
photofinishing |
the act, process, or work of developing film, printing photographs, and the like. |
photoflash |
a glass bulb attached to a camera that flashes brilliantly for a moment when triggered electrically, to illuminate the subject being photographed; flash bulb. |
photoflood lamp |
see "flood lamp." |
photogenic |
attractive as a subject for, or appearing attractive in, photographs. [3 definitions] |
photograph |
a picture made by using a camera that records an image on a light-sensitive surface. [4 definitions] |
photographer |
a person who takes photographs, esp. as an occupation. |
photographic |
of or relating to photography. [3 definitions] |
photography |
the reproduction of an image on a light-sensitive surface. [3 definitions] |