3 ms·
Why do you think 150Hz is unacceptable? People used to watch 50Hz TV, and weren't bothered too much. And San Jose used to use 60Hz flickering streetlights (sodi
by cjensen 3y ago
Why do you think 150Hz is unacceptable? People used to watch 50Hz TV, and weren't bothered too much. And San Jose used to use 60Hz flickering streetlights (sodium? not sure) to reduce light pollution for Lick Observatory.
- mumblemumble 3y agoIEEE 1789 lays a lot of that out. In a nutshell, LEDs are harsher.
- sleepybrett 3y agobecause tvs used phosphors it isnt really on/off 50hz just a slight light dip.
- mortehu 3y agoIf you look at high speed footage of a CRT monitor, you'll see that only a few scan lines are lit at a time. https://www.youtube.com/watch?v=3BJU2drrtCM&t=150s https://www.youtube.com/watch?v=3BJU2drrtCM&t=150s
- sleepybrett 3y agobecause of the high framerate you are seeing increased apparent contrast between actively lit and fading phostphors.
- amluto 3y agoPre-LED stadium lights do indeed flicker pretty egregiously, but, when correctly installed, they would be balanced between all three phases, so at least the average illumination was roughly constant. I don’t know why TVs weren’t headache-inducing. Certainly old CRT computer screens were extremely unpleasant to look at at lower refresh rates.