Blue is a beautiful color with many shades, that can be found in nature.
[Read more…] about Blue: 31 facts about the color of 2020!blue sky
Looking up at the blue sky we actually see our own white blood cells
Staring up at the blue sky we sometimes see white non static spots scattering all about. This is called blue field entoptic phenomenon and Richard Scheerer, a German ophthalmologist , first drew clinical attention to it in 1924. [Read more…] about Looking up at the blue sky we actually see our own white blood cells