Definitions for photometer
foʊˈtɒm ɪ tərpho·tome·ter

Princeton's WordNetRate this definition:0.0 / 0 votes

1. photometernoun

   measuring instrument for measuring the luminous intensity of a source by comparing it (visually or photoelectrically) with a standard source

2. light meter, exposure meter, photometernoun

   photographic equipment that measures the intensity of light

WiktionaryRate this definition:0.0 / 0 votes

1. photometernoun

   Any of several instruments used to measure various aspects of the intensity of light.

2. photometerverb

   To measure some aspect of light (from a star) using a photometer.

WikipediaRate this definition:0.0 / 0 votes

1. 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.

ChatGPTRate this definition:0.0 / 0 votes

1. photometer

   A photometer is a scientific instrument used to measure the intensity of light or its properties such as brightness and absorption. It works by comparing the light from two sources, one of which is known while the other is unknown. This instrument is utilized in various fields such as physics, photography, astronomy, and environmental science.

Webster DictionaryRate this definition:0.0 / 0 votes

1. Photometernoun

   an instrument for measuring the intensity of light, or, more especially, for comparing the relative intensities of different lights, or their relative illuminating power

2. Etymology: [Photo- + -meter: cf. F. photomtre.]

WikidataRate this definition:0.0 / 0 votes

1. Photometer

   In its widest sense, a photometer is an instrument for measuring light intensity or optical properties of solutions or surfaces. Photometers are used to measure: ⁕Illuminance ⁕Irradiance ⁕Light absorption ⁕Scattering of light ⁕Reflection of light ⁕Fluorescence ⁕Phosphorescence ⁕Luminescence

Chambers 20th Century DictionaryRate this definition:0.0 / 0 votes

1. Photometer

   fō-tom′e-tėr, n. an instrument for measuring the intensity of light, esp. for comparing the amount of light coming from different sources.—adjs. Photomet′ric, -al.—n. Photom′etry, the measurement of the intensity of light. [Gr. phōs, phōtos, light, mētron, a measure.]

The Standard Electrical DictionaryRate this definition:0.0 / 0 votes

1. Photometer

   An apparatus for measuring the intensity of light emitted by a given lamp or other source of illuminating power. They may be classified into several types. Calorimetric or Heat Photometers act by measuring relatively the heat produced by the ether waves (so-called radiant heat) emitted by the source. The accuracy of the instrument is increased by passing the rays through an alum solution. A thermopile, or an air thermometer, may be used to receive the rays. Chemical Photometers. In these the light falls upon sensitized photographic paper. The depth of coloration is used as the index of illuminating power. Direct Visual Photometers. These include Rumford's Shadow Photometer, Bunsen's Bar Photometer, and Wheatstone's Bead Photometer, in which the light is estimated by direct visual comparison of its effects. Optical Photometers. These include Polarization Photometers, in which the light is polarized; Dispersion Photometers, in which a diverging lens is placed in the path of the rays of light so as to reduce the illuminating power in more rapid ratio than that of the square of the distance. Selenium Photometers, in which the variations in resistance of selenium as light of varying intensity falls upon it is used as the indicator of the intensity of the light. Jet Photometers, for gas only, in which the height of a flame under given conditions, or the conditions requisite to maintain a flame of given height, is used to indicate the illuminating power. The subject of photometers has acquired more importance than ever in view of the extensive introduction of the electric light. (See Candle, Standard--Carcel--Violé's Standard--and Photometers of various kinds.)

Matched Categories

1. • Measuring Instrument
   • Photographic Equipment

Anagrams for photometer »

1. prototheme

How to pronounce photometer?

1. Alex

   US English

   David

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   Mark

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   Daniel

   British

   Libby

   British

   Mia

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   Australian

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   Australian

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   Neerja

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   South African

How to say photometer in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of photometer in Chaldean Numerology is: 6

2. Pythagorean Numerology

   The numerical value of photometer in Pythagorean Numerology is: 9

Popularity rank by frequency of use

References

1. ^ Princeton's WordNet
   http://wordnetweb.princeton.edu/perl/webwn?s=photometer
2. ^ Wiktionary
   https://en.wiktionary.org/wiki/Photometer
3. ^ Wikipedia
   https://en.wikipedia.org/wiki/Photometer
4. ^ ChatGPT
   https://chat.openai.com
5. ^ Webster Dictionary
   https://www.merriam-webster.com/dictionary/photometer
6. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=photometer
7. ^ Chambers 20th Century Dictionary
   https://www.gutenberg.org/files/37683/37683-h/37683-h.htm#:~:text=photometer
8. ^ The Standard Electrical Dictionary
   https://www.gutenberg.org/cache/epub/26535/pg26535-images.html#:~:text=photometer