I bought some for the Christmas tree and mantel, and looking at them made me get nauseated. It’s like they pulsate or something. I had to move them outside. I HATE them.
Yks!
They do flicker at 60 pulses per second, where incandescent blubs are constant.
Even though consciously we can’t detect that it almost sounds like somehow you are perceiving the pulsing, maybe that’s why you fell ill.
I know for myself florescent light gives me a headache.
6 or 7 years ago i did up the whole outside of my house in LED Christmas lights.
Biggest mistake ever!
They gave off a goulish glow, and you are right, if i move my head too fast they seem like they are blinking or oscillating.
Now i have a 15 pound bag of useless lights up in my attic, What a waste.