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Photometry (astronomy) - Wikipedia
- https://en.wikipedia.org/wiki/Photometry_(astronomy)
- Photometry, from Greek photo-("light") and -metry ("measure"), is a technique used in astronomy that is concerned with measuring the flux or intensity of light radiated by astronomical objects. This light is measured through a telescope using a photometer, often made using electronic devices such as a CCD photometer or a photoelectric photometer that converts light into an …
Photometer - Wikipedia
- https://en.wikipedia.org/wiki/Photometer
- A photometer is an instrument that measures the strength of electromagnetic radiation in the range from ultraviolet to infrared and including the visible spectrum. Most photometers convert light into an electric current using a photoresistor, photodiode, or photomultiplier . Photometers measure: Illuminance. Irradiance.
Photogrammetry - Wikipedia
- https://en.wikipedia.org/wiki/Photogrammetry
- Photogrammetry is the science and technology of obtaining reliable information about physical objects and the environment through the process of recording, measuring and interpreting photographic images and patterns of electromagnetic radiant imagery and other phenomena.. The term photogrammetry was coined by the Prussian architect Albrecht Meydenbauer, which …
Photometric system - Wikipedia
- https://en.wikipedia.org/wiki/Photometric_system
- In astronomy, a photometric system is a set of well-defined passbands (or optical filters), with a known sensitivity to incident radiation.The sensitivity usually depends on the optical system, detectors and filters used. For each photometric system a set of primary standard stars is provided.. A commonly adopted standardized photometric system is the Johnson-Morgan or …
Photographic photometry | Article about photographic …
- https://encyclopedia2.thefreedictionary.com/photographic+photometry
- Photometry, Photographic. the branch of photometry that deals with methods of quantitative evaluation of radiation by means of photographic materials. The methods of photographic photometry are used mainly when the intensity of the radiation being measured is low, for example, in astronomy. Mees, C., and T. James.
Fiber photometry - Wikipedia
- https://en.wikipedia.org/wiki/Fiber_Photometry
- Fiber photometry is a calcium imaging technique that captures 'bulk' or population-level calcium (Ca 2+) activity from a specific cell-types within a brain region or functional network in order to study neural circuits This technique was originally designed to measure the afferent activity of projections to downstream brain regions in vivo. Population-level calcium activity can be easily ...
Exposure (photography) - Wikipedia
- https://en.wikipedia.org/wiki/Exposure_%28photography%29
- In photography, exposure is the amount of light per unit area (the image plane illuminance times the exposure time) reaching a frame of photographic film or the surface of an electronic image sensor, as determined by shutter speed, lens F-number, and scene luminance.Exposure is measured in lux seconds, and can be computed from exposure value (EV) and scene …
Photometry, Photographic | Article about Photometry, …
- https://encyclopedia2.thefreedictionary.com/Photometry%2c+Photographic
- The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased. Photometry, Photographic the branch of photometry that deals with methods of quantitative evaluation of radiation by means of photographic materials. The methods of photographic photometry are used mainly when the intensity of the radiation ...
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