Wow, Never know this before. I would never watch television again. Does flat led computer monitor have the same hypnotic power as television do?
Yes, potentially a flat screen monitor can have the same effect, but since using a computer tends to be a more active conscious task, unless you are passively watching video the effect is not the same. The flash rate refers to the common standard of 24 frames per second. Recently the latest hobbit movie came out and was released with an increased flash rate and made many of the viewers feel nauseous or have headaches. More evidence of the power of brain entrainment over the body's physiological functions.
You are confusing strobe-like flashing with frame rate. TVs typically display a frame rate of 24fps, but actually flash at a much higher frequency (anything from 50Hz, to 960Hz on newer plasma TVs). Some TVs/monitors actually flash each line one at a time (interlaced scanning), some flash the entire image at once (progressive scanning).
The Hobbit was filmed at 48fps instead of 24, but this has nothing to do with flashing - this is simply the frame rate (ie the still image changes 48 times per second). The actual refresh rate would depend on the projector used. It does look different, many newer TVs have a "100Hz" refresh rate which basically gives the same effect - The picture looks a lot smoother when there is fast movement on the screen. Personally I don't like the effect, I prefer the standard 24fps (it can look flickery when there is movement, but I think it just looks better).
As someone said upthread, the "hypnosis" is all to do with the CONTENT, and nothing to do with any brain entrainment or hypnotic flashing.
Don't get me wrong, I think TV these days is fucking mind numbing, it's all made to cater for our ever decreasing attention span. I think this is partly to do with there being so many competing channels/media portals, all vying for our attention. Attention = viewers = advertising revenue. It's all as simple as that, we seem to be stupid enough to fall for it without any hypnotic technology being involved.