Make your own Flicker Wheel

All artificial lights flicker: fluorescent sources, discharge lamps and LEDs. Even tungsten lamps flicker slightly. The human eye cannot detect flicker over 20 times per second, 20 Hz. High quality drivers, ballasts and transformers reduces the visible flicker, as the rate is constantly maintained at 50-60 times per second, 50-60 Hz.

Because it's imperceptible, spinning the wheel under artificial light will reveal if there’s flicker.

DATE PUBLISHED

15 - Feb - 2017

Category - Science and Technology

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