Phosphorus is a chemical element with symbol P  and atomic number 15 (between silicon 14 and sulphur 16). It was associated with Venus the Morning Star, the Lightbringer (Lucifer). It was studied in the art of alchemy. It is found in urine (pee), bone ash, semen, meat, cheese, milk, cola, phosphate rocks (mostly in Morocco) and is a component of DNA and RNA (Stones of Fire in Jacob's Ladder, mentioned in Book of Ezekiel).

It was also called the Devil's element (15 the Devil). The two most common forms are white and red phosphorus.

The Cathars already knew life force was found in urine and demonstrated it through the glowing in the dark of cat's urine.

Gottfried Leibniz also conducted alchemical experiments with urine.

It was first isolated as white phosphorus (tetrahedron shaped) in 1669 by Hennig Brand, while searching for the philosopher's stone. It was the subject of painting The Alchemist Discovering Phosphorus by Joseph Wright.

Robert Boyle's assistant Ambrose Godfrey (friend of Johann Becher) started producing phosphorus industrially. Robert Boyle was a member of the Invisible College and Royal Society. His sister was a friend of John Milton who wrote Paradise Lost about fallen angel Lucifer. Antoine Lavoisier experimented with burning phosphorus to isolate oxygen.

Bertrand Pelletier (French Academy of Sciences, founded by Louis XIV) produced phosphorus from bone ash. White phosphorus is used in napalm of the war industry.

In ancient times Venus had a green glow and was called Hesperus-Phosphorus or Eosphorus as evening and morning star.