Incandescent lights were more forgiving in that regard due to thermal inertia: https://physics.stackexchange.com/questions/13400/what-invisible-flicker-do-diffe

Incandescent lights were more forgiving in that regard due to thermal inertia: https://physics.stackexchange.com/questions/13400/what-invisible-flicker-do-different-types-of-light-bulbs-have https://physics.stackexchange.com/questions/13400/what-invis...