# 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. It is a photometric measure of the light intensity in a given direction. It is also known as the luminous flux density. What is unit of luminous intensity? Luminous intensity is a measure of the wavelength-weighted power emitted by a light source in a particular direction. It is commonly expressed in candela, which is equal to one lumen per steradian.

### What is luminous intensity physics?

In physics, luminous intensity is a measure of the wavelength-weighted power emitted by a light source in a particular direction. It is related to the radiant intensity, which is the power emitted in all directions. The SI unit of luminous intensity is the candela (cd), an SI base unit.

#### How do you calculate luminous intensity?

There is no definitive answer to this question as there are no universally accepted standards for luminous intensity calculation. However, there are a number of methods that are commonly used, which include using either the candela or the lumen as the unit of measurement.

The candela is the SI unit of luminous intensity and is defined as the luminous intensity of a source that emits monochromatic radiation of frequency 540 x 10^12 Hz and that has a radiant intensity in that direction of 1/683 watt per steradian.

The lumen, on the other hand, is the SI unit of luminous flux and is defined as the amount of light emitted by a source in a given unit of time. Lumens can be calculated using the following formula:

Luminous intensity (in candelas) = Luminous flux (in lumens) / Solid angle (in steradians)

Using either the candela or the lumen as the unit of measurement will produce accurate results, but it is important to be aware of the differences between the two units in order to avoid confusion. What is the symbol of luminous intensity? The symbol of luminous intensity is the candela (cd). The candela is the SI unit of luminous intensity, which is a measure of the brightness of a light source. Which unit is lux? A lux is a measurement of how much light is present in an area. It is equal to one lumen per square meter.