Look up: photometer

1. photometer
   [n] - measuring instrument for measuring the luminous intensity of a source by comparing it (visually or photoelectrically) with a standard source
   Found on http://www.webdictionary.co.uk/definitio
   
   
2. Photometer
   A device that measures the intensity of light from a particular source.
   Found on http://www.delscope.demon.co.uk/astronom
   
   
3. Photometer
   An instrument which measures luminous intensity.
   Found on http://www.diracdelta.co.uk/science/sour
   
   
4. photometer
   an instrument for measuring photometric quantities Category: Standards, measures and testing
   Found on http://www.mijnwoordenboek.nl/definition
   
   
5. Photometer
   Pho·tom'e·ter noun [ Photo- + -meter : confer French photomètre .] (Physics) An instrument for measuring the intensity of light, or, more especially, for comparing the relative intensities of different lights, or their relative illuminating power.
   Found on http://www.encyclo.co.uk/webster/P/77
   
   
6. photometer
   <apparatus, physics> An instrument for measuring the intensity of light, or, more especially, for comparing the relative intensities of different lights, or their relative illuminating power. ... Origin: Photo: cf. F. Photometre. ... (24 Mar 1998) ...
   Found on http://www.mondofacto.com/facts/dictiona
   
   
7. photometer
   (fo-tom´ә-tәr) a device for measuring the intensity of infrared, ultraviolet, or visible light. a device for testing the sensitivity of the eye to light by determining the light minimum.
   Found on http://www.encyclo.co.uk/local/21001
   
   
8. Photometer
   • (n.) An instrument for measuring the intensity of light, or, more especially, for comparing the relative intensities of different lights, or their relative illuminating power.
   Found on http://thinkexist.com/dictionary/meaning
   
   
9. photometer
   device that measures the strength of electromagnetic radiation in the range from ultraviolet to infrared and including the visible spectrum. Such ...
   Found on http://www.britannica.com/eb/a-z/p/60
   
   
10. photometer
    photometer 1. An instrument used in measuring the intensity of light, especially in determining the relative intensity of light from different sources. 2. A device for measuring the intensity of infrared, ultraviolet, or visible light. 3. A device for testing the sensitivity of the eye to light by determining the light minimum.
    Found on http://www.wordinfo.info/words/index/inf
    
    
11. 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: ==History== Before electronic light sensitive elements were developed, photometry was done by estimation by the eye. The relative luminou...
    Found on http://en.wikipedia.org/wiki/Photometer
    
    
12. PHOTOMETER
    Any of a number of atmospheric phenomena which appear as luminous patterns in the sky. They do not directly cause adverse weather. They include halos, coronas. rainbows, and fogbows.
    Found on http://www.weather.com/glossary/p.html
    
    
13. photometer
    instrument for measuring photometric quantities
    Found on http://www.electropedia.org/iev/iev.nsf/
    
    
14. photometer
    AERONET sun photometer. Image courtesy The NASA Langley COVE Surface Validation Group An instrument for measuring the amount of light. Depending on the purpose, a variety of filters can be used to measure light of specific wavelengths. A photometer can also be used to measure ambient light, or only...
    Found on http://www.daviddarling.info/encyclopedi
    
    
15. photometer
    Type: Term Pronunciation: fō-tom′ĕ-tĕr Definitions: 1. An instrument designed to measure the intensity of light or to determine the light threshold.
    Found on http://www.medilexicon.com/medicaldictio
    
    
16. photometer
    Instrument that measures the intensity of light (electromagnetic radiation in the visible range), usually by comparing relative intensities from different sources. Bunsen's grease-spot photometer of 1844 compares the intensity of a light source with that of a known source by using each source to illuminate one half of a translucent area. Mo...
    Found on http://www.talktalk.co.uk/reference/ency
    
    
17. Photometer
    A device for measuring luminous intensity or luminance. A photometer employs a photopic filter which has a band pass that is matched to the human eye response. The S.I. units employed are lumens and lux.
    Found on http://www.intl-lighttech.com/support/gl