On Wed, Jan 22, 2014 at 11:36 PM, John Berry <[email protected]> wrote: > > > > There wasn't a law for the conservation of mass when the CoE was proposed, but probably only because it would have seemed obvious. >
Conservation of mass was proposed by the chemist Antoine Lavoisier in the late 18th century. This was about 50 years before the principle of conservation of energy (as distinct from the principle of conservation of momentum) was proposed by James Joule. Harry
