Calculating colour temperature from two sources of varying luminous intensity

1. How do you calculate color temperature?
2. How do you determine the color temperature of a light source?
3. What is the correlated color temperature of the light source?
4. What is the correlated color temperature of an incandescent lamps?

How do you calculate color temperature?

M(λ,T)=c1λ−5(ec2/(λT)-1)−1, where constant c₁ = 3.741832 × 10⁻¹⁶ Wm² and c₂ = 1.4388 × 10⁻² m K. The color temperature T of a light source is the color temperature of a Planckian radiator which emits radiation of the same chromaticity as the light source.

How do you determine the color temperature of a light source?

Color temperature

The simplest way to measure light source color is to compare the source spectrum to that of blackbody sources. This yields a correlated color temperature, a single number defined as the temperature (in degrees Kelvin) of a blackbody source with a balance of color closest to the source spectrum.

What is the correlated color temperature of the light source?

Color temperature (Correlated Color Temperature, or CCT, in lighting tech jargon) is essentially a gauge of how yellow or blue the color of light emitted from a light bulb appears. It's measured in the Kelvin unit and is most commonly found between 2200 Kelvin degrees and 6500 Kelvin degrees.

What is the correlated color temperature of an incandescent lamps?

Here are the approximate correlated color temperatures of common light sources: Candle Flame – 1,800 K. Traditional incandescent bulb – 2,700 K.