The photoelectric effect

Many of you people must be wondering how the electrical signals in the wires connected to your gadgets transmits into a visual signal which you can view. No, it isn't magic you lazy parents. The photoelectric effect is the phenomenon by which a metal (cathode) transmits electrons after being subject to heat, ultra violet radiations etc. A hot cathode ray tube does this by using anodes to accelerate electrons and concentrating them into a fluorescent screen in a defined pattern;this is the concept of pixels. This is was discovered by Albert Einstein for which he gained a lot of fame and ultimately the Nobel prize along with his work on relativity. I just thought we should take a moment to appreciate that without his discovery we wouldn't be able to enjoy electrical gadgets like iPads and the television of course.