Overview

photometer


Show Summary Details

Quick Reference

An instrument for measuring the brightness of stars or other objects. In its widest sense the term can include the human eye or the photographic plate. Conventionally, the term is confined to instruments such as the photoelectric photometer, or area photometers based on CCDs or infrared arrays, whose output is directly proportional to the incident radiation.

Subjects: Science and Mathematics.


Reference entries

See all related reference entries in Oxford Index »


Users without a subscription are not able to see the full content. Please, subscribe or login to access all content.