i just worked out why the computer screen goes all weird when you film it with your phone camera
its because
phone cameras cant take many frames per second
and the computer goes really fast
(fps)
so the phone
picks up certain frames
showing that the computer's frame is refreshing
you could only have a normal picture
if the phone filmed at the same fps rate or faster, than the computer

This was a randomly occurring thought. I was not thinking about anything like this when I worked it out. Cool