photometer
Speech parts
1. photometer - Noun
2. photometer - Verb
Meaning
An instrument for measuring the intensity of light, or, more especially, for comparing the relative intensities of different lights, or their relative illuminating power.
Source: Webster's dictionarySynonyms
Hypernyms
Hyponyms
Phrases with the word
Anagrams
Examples
Joel Stebbins at the University of Illinois Observatory used an early selenium cell photometer to produce the first-ever photoelectric study of a variable star.
Edward Charles Pickering, U.S. physicist and astronomer who introduced the use of the meridian photometer to measure the magnitude of stars and established the Harvard Photometry (1884), the first great photometric catalog.
The global photometer & calorimeter market is expected to reach 162.53 million and 252.79 Million by 2020 at an estimated CAGR of 12.19% and 11.39% respectively from 2014 to 2020.
The development of the photoelectric photometer allowed precise measurements of magnitude at multiple wavelength intervals.
The experiment was later taken up by Mersenne and another Jesuit, Claude de Chales, and eventually led to Bouguer's more famous photometer.