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1. Photometry (optics): Photometry is the science of the measurement of light, in terms of its perceived brightness to the human eye. It is distinct from radiometry, which is the science of measurement of radiant energy (including light) in terms of absolute power. (Optics) [100%] 2024-01-09 [Photometry] [Lighting]...
2. Photometry: Photometry, the art and science of comparing the intensities or illuminating powers of two or more sources of light. As in all scientific measurements, its methods are attempts to give quantitative accuracy to the crude comparisons made by the eye ... [100%] 2022-09-02
3. Photometry: 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 ... (Astronomy) [100%] 2024-03-19 [Astrophysics] [Electromagnetic radiation]...
4. Phytometra: Phytometra is a genus of moths of the family Erebidae. The genus was described by Adrian Hardy Haworth in 1809. (Genus of moths) [80%] 2024-01-10 [Boletobiinae] [Noctuoidea genera]...
5. 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. (Physics) [80%] 2024-01-11 [Electromagnetic radiation meters] [Optical instruments]...
6. Photometria: Photometria is a book on the measurement of light by Johann Heinrich Lambert published in 1760. It established a complete system of photometric quantities and principles; using them to measure the optical properties of materials, quantify aspects of vision, and ... (Physics) [80%] 2024-01-09 [Optical metrology] [Mathematics books]...
7. 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. (Instrument to measure light intensity) [80%] 2024-04-20 [Electromagnetic radiation meters] [Optical instruments]...
8. Flame photometry: Flame photometry : A technique for quantitative analysis of chemical elements, based on the intensity of the wavelengths they emit when introduced into a flame. [70%] 2023-10-21
9. Aperture Photometry Tool: Aperture Photometry Tool (APT) is software with a graphical user interface for computing aperture photometry on astronomical imagery. Image overlays, graphical representations, statistics, models, options and controls for aperture-photometry calculations are brought together into a single package. (Astronomy) [57%] 2024-01-09 [Astronomy] [Photometry]...
10. Phytometra orgiae: Phytometra orgiae is a species of moth in the family Erebidae. It is found in North America. (Species of moth) [56%] 2024-01-10 [Boletobiinae] [Articles created by Qbugbot]...
11. Phytometra viridaria: Phytometra viridaria, the small purple-barred, is a moth of the family Erebidae. The species was first described by Carl Alexander Clerck in 1759. (Biology) [56%] 2024-01-09 [Boletobiinae]
12. Sun photometer: A sun photometer is a type of photometer conceived in such a way that it points at the sun. Recent sun photometers are automated instruments incorporating a sun-tracking unit, an appropriate optical system, a spectrally filtering device, a photodetector ... (Physics) [56%] 2022-08-29 [Optical devices] [Electromagnetic radiation meters]...
13. Photometric redshift: A photometric redshift is an estimate for the recession velocity of an astronomical object such as a galaxy or quasar, made without measuring its spectrum. The technique uses photometry (that is, the brightness of the object viewed through various standard ... [56%] 2024-01-10 [Doppler effects]
14. Photometric parallax: Photometric parallax is a means to infer the distances of stars using their colours and apparent brightnesses. It was used by the Sloan Digital Sky Survey to discover the Virgo super star cluster. (Astronomy) [56%] 2024-01-09 [Astrometry]
15. Phytometra ernestinana: Phytometra ernestinana, Ernestine's moth, is a species of moth of the family Erebidae. It is found in North America, where it has been recorded from Alabama, Arizona, Florida, Georgia, Illinois, Indiana, Iowa, Kansas, Louisiana, Michigan, Mississippi, New York, North ... (Species of moth) [56%] 2024-01-10 [Boletobiinae] [Moths described in 1840]...
16. 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. (Astronomy) [56%] 2024-01-09 [Photometric systems]
17. Photometric redshift: A photometric redshift is an estimate for the recession velocity of an astronomical object such as a galaxy or quasar, made without measuring its spectrum. The technique uses photometry (that is, the brightness of the object viewed through various standard ... (Physics) [56%] 2024-01-09 [Doppler effects]
18. Photometric stereo: Photometric stereo is a technique in computer vision for estimating the surface normals of objects by observing that object under different lighting conditions. It is based on the fact that the amount of light reflected by a surface is dependent ... (3D imaging technique) [56%] 2024-01-12 [Computer graphics] [Computer vision]...
19. Phytometra rhodarialis: Phytometra rhodarialis, the pink-bordered yellow, is a moth of the family Erebidae. The species was first described by Francis Walker in 1859. (Species of moth) [56%] 2024-01-09 [Boletobiinae] [Moths of North America]...
20. Photometric-standard star: Photometric-standard stars are a series of stars that have had their light output in various passbands of photometric system measured very carefully. Other objects can be observed using CCD cameras or photoelectric photometers connected to a telescope, and the ... [46%] 2022-12-17 [Star types] [Photometric systems]...