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Photo-effect
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Also known as photoelectric effect. this refers to a phenomenon of ejection of electrons from a metal whose surface is exposed to light. photon. a representative of the quantum nature of light. it is considered as the smallest unit of light.
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Photoelectric, английский
Pertaining to the electrical effects of light or other radiation; for example, emissions of electrons.
Phenomenon, английский
- 1. a fact or situation which can be observed 2. someone or something that is considered to be extraordinary and marvellous
- A condition with various possible causes in which the blood supply to the fingers and toes is restricted and they become cold, white and numb. also called dead man’s fingers, vasospasm [described 1862. after maurice raynaud (1834–81), french physician.] rbc rbc abbr red blood cell rcgp rcgp abbr royal college of general practitioners rcn rcn abbr royal college of nursing rcog rcog abbr royal college of obstetricians and gynaecologists rcp rcp abbr royal college of physicians
- In diabetes mellitus, a swing to a high level of glucose in the blood from an extremely low level, usually occurring after an untreated insulin reaction during the night. it is caused by the release of stress hormones to counter low glucose levels.
- Явление; эффект
Representative, английский
- Patterns in a sample of units may reasonably be attributed to the population from which the sample is drawn, only if the sample is representative. in practical terms, to ensure that a sample is representative almost always means ensuring that it is a rand
- Представитель
- Представитель, типичный
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Photopic vision, английский
- The range of light intensities, from 105 lux down to nearly 10-2 lux, detectable by the human eye.
- Vision which is adapted to bright light such as daylight, using the cones in the retina instead of the rods, which are used in scotopic vision. light adaptation
- Average spectral responsivity curve of the human eye when adapted to well lit conditions (greater than 0.034 cd·m–2). the photopic spectral luminous efficiency response curve is governed by an averaged retinal cone response with sensitivity peaks centered at about 555 nm. also known as foveal vision and light adapted vision. compare mesopic vision and scotopic vision.2,6
- Average spectral responsivity curve of the human eye when adapted to well lit conditions (greater than 0.034 cd/m2). the photopic spectral luminous efficiency response curve is governed by an averaged retinal cone response with sensitivity peaks centered at about 555 nm. also known as cie spectral sensitivity function of the human eye; foveal vision; and light adapted vision. compare mesopic vision; scotopic vision (iesna 1984).
- Average spectral responsivity curve of the human eye when adapted to well lit conditions (greater than 0.034 cd·m–2). the photopic spectral luminous efficiency response curve is governed by an averaged retinal cone response with sensitivity peaks centered at about 555nm.
Photodiode, английский
- A type of semiconductor device in which a pn junction diode acts as a photo sensor.
- A semiconductor that converts light into an electrical signal, used in fiber optic receivers
- Фотодиод
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