This video shows 3 monitors that alternate between a white and a black display as fast as possible. The video was recorded using a high speed camera and is played back here at 3% of the original speed.
- Left display: TFT running at 60Hz
- Middle display: CRT running at 120Hz
- Right display: TFT running at 120Hz
You can clearly see the difference between the CRT monitor, which is refreshed one line at a time, and the TFT monitors, which "fill up" the display from top to bottom.
(Courtesy of the Tech. Dept. of the Vrije Universiteit, Amsterdam)
For more information, see cogsci.nl