Photometry is a branch of optics that deals with measuring 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.

In astronomy, photometry, from Greek photo-("light") and -metry ("measure"), is a technique used in astronomy that is concerned with measuring the flux or intensity of light radiated by astronomical objects. [1]

Photometers examine how light interacts with reflective materials. The array of photometers describes the working principle of photometry in different fields of study. Some instruments use the principle of photometry to observe how light absorbs and/or reflects wavelengths.

2024年5月25日 · Photometry is the precise measurement and study of visible light, which is perceived as brightness by the human eye. It quantifies light and contextualizes it within the limits of human vision, considering factors like brightness, color, and perceived intensity.

2021年6月2日 · The photometry program includes calibration services which provide access to the photometric scales realized and maintained at NIST. These services include lamp standards of luminous intensity, luminous flux, and color temperature; and …

Photometry is the science of measuring visible light which the human eye perceives. The measuring unit of illuminance is the LUX or foot-candle. In other words, it indicates the amount of illumination a specific surface unit receives.

Photometry is a system of language, mathematical formulations, and instrumental methodologies used to describe and measure the propagation of light through space and materials. In consequence, the radiation so studied is confined to the visible (VIS) portion of the spectrum.

Photometry is the branch of science that deals with the measurement of light, particularly in terms of its intensity and the way the human eye perceives it. It involves the quantification of visible light and its characteristics, such as brightness and color.

Photometry, in astronomy, the measurement of the brightness of stars and other celestial objects (nebulae, galaxies, planets, etc.). Such measurements can yield large amounts of information on the objects’ structure, temperature, distance, age, etc.

Photometry is the science and technology of quantifying and measuring properties of light related to its perceived brightness for human eyes. It thus deals with visible light only, not with infrared and ultraviolet light, and takes into account the spectral sensitivity of the human eye.