I have to be honest and I watch a digital screen all the time. I look at it more then I look outside through a window. Watch, phone, tablet, laptop or computer. And I never fully realized how these screens work. How they are able to present information or are able to show the beauty of a wide array of things. Of course I had some cognition, I work in digital environments for more than two decades, but the full realisation came by watching and understanding a simple experience:
a drop of water on a led screen will act as a magnifier and a prism
And then you suddenly see the three colors where all this digital marvel is based on. A red, a green and a blue light.
Three colours and LED
The things emitting these lights are the LED’s, light emitting diodes. And there are three physical separate entities that produce its individual colour of light. A red LED, a green LED and a blue LED. All in a very tiny space, a space that gets more miniature with the year. The three colours now can work together, they act as palette and can generate a gamut of colours.
One such a light mixing unit is called a pixel and a screen consists of a raster of them with certain height and width. Mixing these three colours of light (RGB Color Model) is the basis for most modern screens. There is more about screens and resolutions in my article Resolutions for screens and images.
Colors are joy
And a moral and emotional story that made me appreciate being able to see colour even more: