theory (from the Ancient Greek φλογιστόν phlŏgistón "burning up", from φλόξ phlóx "flame"), first stated in 1667 by Johann Joachim Becher?
, is an obsolete scientific theory that postulated the existence of a fire-like element called "phlogiston
", which was contained within combustible bodies and released during combustion
. The theory was an attempt to explain processes such as combustion
and the rusting of metals, which are now understood as oxidation?