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A comment on The Ever-Present Glow of LED Greenhouses. Parent comment

Re:The Ever-Present Glow of LED Greenhouses by stuaxo on Wednesday October 23, 2019 @04:16AM (#21332383)
I have a friend with a condition a bit like epilepsy and LEDs set him off all the time.

Attacks have even been brought on by passing cyclists with red LED lights.

Weirdly my older Phillips hue does not, so either that is not flickering or it is doing it much faster.

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Re:The Ever-Present Glow of LED Greenhouses by faceplanted on Wednesday October 23, 2019 @06:36AM (#21333187)
LED lightbulbs are different from the bare LED's on a bike light, they use blue LED's under a layer of phosphor that absorbs it and re-emits a variety of shorter wavelengths simulating white light and different colour temperatures.
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Re:The Ever-Present Glow of LED Greenhouses by ricardobeat on Wednesday October 23, 2019 @08:39AM (#21333937)
Most cheap light fixture LEDs flicker. You can test easily using your mobile phone camera if it has a 120-240hz mode.
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