Abstract:

Until the end of the 19th century, when artificial light sources came into use, people organized their whole life according to sunlight and spread it throughout the day. Human beings carry out their life, work, and production in indoor environments by bringing sunlight indoors as much as possible. However, today, people have to spend most of their time in closed areas without sunlight. Indoor areas where light cannot reach and artificial light sources, necessary during the night due to need, have developed over time and reached a very important level, especially in the 20th century. However, daylight’s color, temperature, and intensity—an indispensable source of our lives—changes constantly according to the seasons and their position during the day. The lighting provided by artificial light is constant—as long as it is active. It is important to protect people whose biological, psychological, and physiological structure has been formed according to daylight—since their existence from the problems created by artificial light sources. Harmonizing artificial lighting with daylight becomes important to maintain a healthier, more productive, and more comfortable life. As for the night, necessary precautions should be taken to prevent the circadian rhythm from being disrupted and not be affected by the technological products used. In this study, information will be given about what should be done to prevent the circadian rhythm by affecting the biological clock of the light emanating from artificial light sources and technological products and to prevent the person from encountering biological, psychological, and physiological problems.

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