Behind the scenes UK experimental colour transmission 1957

[NewVista]

Originally Posted by colorfixer

It's more than power supply filtering. Watching 50Hz video under 60Hz non incandescent lighting can be bothersome due to differing flicker rates. In my office, when I watch a 50Hz/Pal feed, the screen noticeably flickers when I light the room with fluorescent lighting. .

My objections to these 'reasons', that you hear now and then, for 50hz countries using 25fps TV are as follows:

1. TV's (even old ones) shouldn't have AC power artifacts. If you see this, I suggest you book the set in for repair.

2. When GB designed 405/50, fluorescent lighting wasn't available*. So it's a non-sequitur to claim "50 hz was chosen to sync flicker with fluorescent lights".

3. Some countries happily enjoy 50hz pwr & 60hz TV (Chile, Japan).

4. Why is there no 12hz beat with my 72hz computer & Fluoro lights ?



*not available commercially until 1939