Editing Conservation of energy (section)

===Conservation of energy in beta decay===
{{Main|Beta decay#Neutrinos}}
The discovery in 1911 that electrons emitted in [[beta decay]] have a continuous rather than a discrete spectrum appeared to contradict conservation of energy, under the then-current assumption that beta decay is the simple emission of an electron from a nucleus.<ref>{{cite book |last1=Jensen |first1=Carsten |year=2000 |title=Controversy and Consensus: Nuclear Beta Decay 1911-1934 |url=https://www.springer.com/birkhauser/physics/book/978-3-7643-5313-1 |publisher=Birkhäuser Verlag |isbn=978-3-7643-5313-1 }}</ref><ref>{{cite journal |bibcode= 1978PhT....31i..23B |doi=10.1063/1.2995181 |title=The idea of the neutrino |journal=Physics Today |volume=31 |issue=9 |pages=23–8 |year=1978 |last1=Brown |first1=Laurie M. }}</ref> This problem was eventually resolved in 1933 by [[Enrico Fermi]] who proposed the correct [[Fermi's interaction|description of beta-decay]] as the emission of both an electron and an [[antineutrino]], which carries away the apparently missing energy.<ref>
{{cite journal
 |last=Wilson |first=F. L.
 |year=1968
 |title=Fermi's Theory of Beta Decay
 |url=http://microboone-docdb.fnal.gov/cgi-bin/RetrieveFile?docid=953;filename=FermiBetaDecay1934.pdf;version=1
 |journal=[[American Journal of Physics]]
 |volume=36 |issue=12 |pages=1150–1160
 |bibcode= 1968AmJPh..36.1150W
 |doi= 10.1119/1.1974382
}}</ref><ref>
{{cite book
 |last=Griffiths |first=D.
 |year=2009
 |title=Introduction to Elementary Particles
 |edition=2nd |pages=314–315
 |publisher=Wiley
 |isbn=978-3-527-40601-2
}}</ref>