In the last post I challenged your television/computer screen know-how.
Here’s what you’ve been waiting for:
TV 1 = Cathode Ray Tube (CRT)
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TV 2 = Liquid Crystal Display (LCD)
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TV 3 = Plasma
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TV 4 = Light-Emitting Diode (LED)
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Get more than two correct? Go ahead and put a gold star on your progress chart. I think these images look cool, but how they work is even cooler:
Look at you, just looking at that cool flat screen of yours, reading this blog post.
Yes, you — who else?
Think about this: Pieces of light are shooting out of that screen, slowing down as they hit your eyeglasses/contacts/cornea/lens/vitreous humor, and ending their short-lived existence on a suicide mission into your retinal rod and cone cells — which create electrical signals that travel through your optic nerve and into your fleshy computer to comprehend this text.
Mind-blowing run-on sentences aside, what they heck are you really looking at? Where is that light really coming from? What is the material responsible in the screen? How does it all work? What is the meaning of life?
Let’s find out! But first, a fun guessing game. (more…)
