What is the black screen with green text called

1. What are the green and black screens called?
2. Why is my text green on black screen?
3. Why were terminals green on black?

What are the green and black screens called?

Monochrome monitors are commonly available in three colors: if the P1 phosphor is used, the screen is green monochrome. If the P3 phosphor is used, the screen is amber monochrome.

Why is my text green on black screen?

What were the technical reason for the early CRT computer screens using green for the characters? The characters were displayed by playing a beam of electrons onto phosphor coating that glowed. Green was the colour of the phosphor that was (a) reliable enough (b) cheap enough.

Why were terminals green on black?

Green was a cheap and long lasting phosphor. It also was easier on people's eyes than looking at white type on a black background. Though screen technology advanced quickly, green on black became synonymous with all forms of cyber life.