There’s antimony, arsenic, aluminium, selenium, and hydrogen and oxygen and nitrogen and rhenium…

jiffyrohan

In ancient Greece, it was believed that there were four elements – earth, air, fire, and water – that made up all matter in the world. This classification evolved as a result of these being the ‘elements’ which people saw on a daily basis – they didn’t realize that they breathed oxygen, because they didn’t see oxygen. Plato associated each element with a regular solid; earth was supposed to be made from cubes, air from octahedrons, fire with tetrahedrons, and water with icosahedrons. As for dodecahedrons, “the god used [them] for arranging the constellations on the whole heaven.” Who knows what he meant by that?

On a side note, I wonder how they could look at their food and say “This must be made up of 20% air, 70% water and 10% fire.”

Several elements were known to ancient man, such as copper, gold and silver. However, cobalt was the…

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