Pythagorean cup - Wikipedia, the free encyclopedia
A (also known as a , a or a ) is a form of which forces its user to imbibe only in moderation. Credited to , it allows the user to fill the cup with up to a certain level. If the user fills the cup only up to that level he may enjoy his drink in ...
5 Signs Humans Are Still Evolving
15 Awesome Chemistry GIFs
25 Amazing Electron Microscope Images
The Scale of the Universe 2
Zoom from the edge of the universe to the quantum foam of spacetime and learn about everything in between.