Conservation of energy was proposed about 50 years before mass-energy equivalence was deduced. During that period four distinct conservation of laws were generally accepted: one for mass, one for momentum, one for charge and one for energy. Mass-energy equivalency reduced eliminated the difference between the conservation of energy law and conservation of mass law.
Harry On Thu, Jan 23, 2014 at 6:17 PM, John Berry <[email protected]> wrote: > Ok, good to know. > > Now may I ask, what is the difference between the proposal of the > conversation of mass... > > And the proposal of the conservation of energy? (accepted to be false) > > Why is it any more logical that energy be conserved than mass be conserved? > > John > > > > On Fri, Jan 24, 2014 at 10:41 AM, H Veeder <[email protected]> wrote: > >> >> >> 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 >> > >
