![]() ![]() ![]() It is easy to find out whether a light source is flickering – whether it is a lamp, PC or other illuminated devices. The extent to which one is affected by the flickering of an artificial light source depends on its frequency, the fluctuation in brightness and the light intensity of the illumination. This indicates an on-off effect in most lamps, which is widely known as flicker or hertz flicker. The polarity in alternating current changes many times per second between about 50 and 60 Hertz. Mains operated luminaires operate on alternating current. Cause of flickering with artificial light sources This could lead to tiredness, exhaustion, headaches, lack of concentration, increased heart rate or even epileptic seizures. ![]() If a person is exposed to an artificial, flickering light source for too long, this can have effects on his or her health. This flickering, which the human eye often cannot even perceive, nevertheless triggers stress symptoms in the body. Although with varying intensity, only natural sunlight is completely flicker-free. Almost every artificial light source flickers. ![]()
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