Reply #33: It's not the frequency of the flicker I was talking about, it's the depth of the light curve.. [View All]

[Fumesucker]

The variation in light output with an incandescent is very small, a shallow light curve, the pulsations come at the same frequency though.

I suspect LED lights have a lot of flicker too. I'm not sure they have circuitry to smooth out the 120 Hz pulsations from the power line.

An LED light would have a very pronounced bright dim cycle at 120 Hz without such circuitry. It's generally accepted that 120 Hz is too fast to see but there are situations where it can be sensed by most people if the light curve is deep enough.