Why when you turn off the TV, is there sometimes a green dot in the middle, or a green stripe accross the screen?
ANSWER PERSON RESPONDS: The dot or line is not always green, but they are always watching you, no matter the color.
Actually, the images on a TV screen are created by an electron beam hitting colored phosphors. The beam (actually, three beams of red, green and blue), obviously, moves very, very fast. When you turn off the TV, what you are seeing is the final discharge from the beam as the system cools down. The dots are so sensitive that they still react to the declining energy.
At least, that is what they want us to think.