Dot of water on computer screen? I see little dots of red, blue green etc?
I have a little dot of water on my computer screen. When I look closely in it, I see different coloured dots like red, green and blue. What is this?
Your monitor is made up of thousands of pixels. Pixels work on a RGB (red, green, blue) system where combinations of values work to create all the different colours you see on your screen. When water, spit, glass cleaner, etc. get put on your screen, they act as a ‘magnifier’ and you can actually see the individual colours of the pixels.
Carl Sagan – Pale Blue Dot
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