David MacAdam (July 1910 – March 1998), American physicist, made important contributions to the field of color perception. One of his experiments —maybe the most famous— consisted of showing to different colors to a subject….
Despite the big advances made on recent years, during the production process of LEDs, there are still some small variations that affect some of their features, optical as well as electrical. That’s the reason why…
The reference value that we use to indicate the duration of an incandescent bulb is known as its average life. Does that mean that a bulb with an average life of 5,000 hours must last…
The Color Reproduction Index indicates the ability that a light source has to accurately reproduce the colors of the objects, compared to a reference light source that we consider ideal. The maximum value is CRI= 100….
The concept of chromatic, or color, reproduction, refers to the way in which objects appear when they are lighted by a light source. In order to assess the quality of the result, there are at…
The image that we usually have of LED lights is linked to their high efficiency and their long shelf life and, thus, we don’t even think of other advantages they can offer. Let’s see some…
Luminous efficiency: ratio of the total luminous flux radiated to the power absorbed. Ever since its first appearance in the market, LED’s luminous efficiency has significantly increased. Today’s medium-level range products are 4 times more…
Have you ever wondered why, when a bunch of electrons fly out of their orbit —thus occupying a higher energy level inside the atom—, once they are back to their initial place due to the…
In our previous post, The importance of light, I: in life, we introduced artificial light as a substitute when natural light disappears. In any kind of project, the architect, the interior designer, the set designer,…