Definition of Luminous Intensity

The phenomenon of light from the point of view of its measurement is studied in the discipline known as photometry. In this framework, the light intensity indicates the amount of light that is perceived (the scientific term used is luminous flux).

From a mathematical parameter, the luminous intensity is something that can be measured, for which the Unit known as candela. In this sense, it must be remembered that light has different measurement units (lumen, lux, lumen per watt and others) and each one of them is used to measure some aspect of light. Do not forget that light is a form of Energy, specifically electromagnetic energy.

The light intensity in different areas

The device used to measure light intensity is the lux meter, which works by means of a sensor that detects variations in light intensity. The luxmeter allows to record a series of data, which refer to the measurement of light in a given space. These types of measurements are necessary to decide

if the light used is adequate. For example, in a classroom the light intensity must be established at the different points (on the blackboard, in the teacher's location area and in the area intended for students), since it would not make much sense for one part of the classroom to be in semi-darkness while another space had a presence of light significant.

The example of light intensity in the classroom allows us to remember that the presence of light is decisive in all kinds of activities. Consider a covered sports arena where spectators and athletes need adequate visibility. In this case, the light intensity determines the development of any activity that takes place in that space.

Decorators know that light intensity is a basic element, as it has effects on colors, on one's own perception of space or in relation to the personal sensations that occur in a certain place. The role of lighting in decoration is of the highest order. Normally, the attempt is made to make the most of natural light and artificial light is a secondary option. As is logical, in the interior space artificial light plays a leading role. Thus, the light intensity affects in very different ways: creating a weather specific, providing an optical effect or fulfilling a specific objective. In any case, the intensity of the light must be associated with a specific function in each case.

In the world of decoration there is talk of language of the light. If it is intense, energy is transmitted. If it is excessive, it is very likely that there will be a tiring effect. And if the light is warm it is very possible that a relaxation effect is created.

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