What is it ? Why does it have colors ?
But I see it green when still and orange when angered by wind!chem_tr said:It is very simple; if a matter is colored, then its absorption of light is in the visible range. A red matter seems red, since the yellow component in white light is absorbed by the matter and the remaining red light is given out. The phenomenon is also known as "complementary colors".
I had only slightly recalled phylogsten in the context of the evolution of alchemy. Looking back on how conclusions were made, and how the mind thinks, you can almost see the progression to "modern" science.Please note that Hypata's link is of historical interest only, phylogsten does not figure into modern understanding.