3 ms·

LEDs can be very bad, depending on the circuitry, to the extent that it's uncomfortable for peoples. Incandescent bulbs won't flicker.

• bitcurious 7y ago
  Incandescent bulbs flicker at the rate of the AC current, but the flickering is brighter/dimmer rather than on/off because they stay radiant while hot and cool slowly.
  • ubercow13 7y ago
    Yes but I guess the amplitude of the flicker must be very low? I'd have thought that if it was at all significant it would be very visually obvious at 50-60Hz
    • thfuran 7y ago
      It's really more like 120Hz since the polarity doesn't matter for incandescents.
      • Moru 7y ago
        But you can stabilize the current quite nicely if you know how. This is almost never done on cheap LEDs. Except IKEA's leds, they were surpricingly good in some test lately.