LCD or plasma screen

Thanks for the explanation, but does that mean LCD has better contrast and will cause less strain to my eyes.

I would be inclined to believe that a plasma monitor would offer better contrast and more colors, as I am of the understanding that an element must be charged in order to emit any light, and because adjusting an electrical charge likely offers more fine-tuning of gradient than tilting. I'm pretty sure a plasma is also better for viewing from an angle. LCDs, being reflective, look like negatives when viewed from outside a certain range of angles. As far as radiation goes, I have nothing to say. I haven't read or even heard about that, so I would be guessing if I told you.

Every day I am learning something new. i expected it to bleed if broken but how does it bleed when put upside down, isn't it closed from top also?

That is a very good observation. i had not noticed that, so looking at a plasma screen from up close does not give good picture? I do stay at a healthy distance but because otherwise I would have to use reading glasses.