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In the second case, the total is added to local illumination, which is created lamps that are close to the workstation location. Artificial lighting can be General, in which lamps are placed evenly in the upper zone of the office, or a combination. The second and fourth type of coverage included in hours, and the third allocates the emergency exits, various safe points. Luxmeter is used to control the illumination in agriculture, transport, industry and other fields.įirst used for illumination of offices, places of work outside the building. For example, the device “Yu-116" allows you to calculate this parameter is generated by incandescent and natural light. To determine light use different light meters. The discomfort metric (M) is used as the evaluation criterion of the uncomfortable glare that causes the feeling of pains in the eyes when non-uniform placement of the bright spots in field of vision.
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The criterion of illumination pulsation (CP), measured in percent, is used to estimate the relative depth fluctuations of light.Ĩ. The rate of blinding (R) is a measure of glare lighting.ħ. This flow is measured in candelas per square meter and is indicated by a L.Ħ. Brightness represents the surface density of luminous intensity of a surface that lies in this direction. The illumination shows the value of the surface density of the luminous flux. The solid angle (part of the space, which is located inside the conical surface). Is denoted as I, and is measured in Candela.ģ. The power light (the light flux density in the space lying in the direction of the axis of the solid angle). Luminous flux (it is part of the optical radiation perceived as light). It can be described by the following variables:ġ. In range of wave length of 380-780 nm in the electromagnetic radiation of the optical spectrum becomes visible.