The ouroboros or uroborus (/ˌ(j)ʊərəˈbɒrəs, uːˈrɒbərɒs/, also US: /-oʊs/) is an ancient symbol depicting a serpent or dragon eating its own tail. Originating in ancient Egyptian iconography, the ouroboros entered western tradition via Greek magical tradition and was adopted as a symbol in Gnosticism and Hermeticism and most notably in alchemy. The term derives from Ancient Greek: οὐροβόρος, from οὐρά (oura), “tail” + βορά (bora), “food”, from βιβρώσκω (bibrōskō), “I eat”
-https://en.wikipedia.org/wiki/Ouroboros-
Scientific notation (also referred to as scientific form or standard index form, or standard form in the UK) is a way of expressing numbers that are too big or too small to be conveniently written in decimal form. It is commonly used by scientists, mathematicians and engineers, in part because it can simplify certain arithmetic operations. On scientific calculators it is usually known as “SCI” display mode.