Luminous Intensity
Converters

Luminous Intensity

Luminous intensity is a measure of the wavelength-weighted power emitted by a light source in a particular direction per unit solid angle, based on the luminosity function, a standardized model of the sensitivity of the […]

Luminance
Converters

Luminance

Luminance is a photometric measure of the luminous intensity per unit area of light travelling in a given direction. It describes the amount of light that passes through, is emitted or reflected from a particular […]

Frequency Wavelength
Converters

Frequency Wavelength

Frequency is the number of occurrences of a repeating event per unit time. The SI unit of frequency is the hertz (Hz); one hertz means that an event repeats once per second. The wavelength and […]

Illuminance
Converters

Illuminance

Illuminance was formerly often called brightness, but this leads to confusion with other uses of the word, such as to mean luminance. This Illuminance converter allows you to convert candle-steradian/sq. meter (c·sr/m²), centimeter-candle (cm·c), foot-candle […]