Photometry (optics)
Science of the measurement of visible light / From Wikipedia, the free encyclopedia
Dear Wikiwand AI, let's keep it short by simply answering these key questions:
Can you list the top facts and stats about Photometry (optics)?
Summarize this article for a 10 year old
Photometry is a branch of optics that deals with the measurement of light in terms of its perceived brightness to the human eye.[1] It is concerned with quantifying the amount of light that is emitted, transmitted, or received by an object or a system.
This article needs additional citations for verification. (December 2010) |
In modern photometry, the radiant power at each wavelength is weighted by a luminosity function that models human brightness sensitivity. Typically, this weighting function is the photopic sensitivity function, although the scotopic function or other functions may also be applied in the same way. The weightings are standardized by the CIE and ISO.[2]
Photometry is distinct from radiometry, which is the science of measurement of radiant energy (including light) in terms of absolute power.