Assertion: proton's mass | /r/HasProperty | deduced
Facets:
value: by subtracting proton
type: MANNER
Source sentences:
text: However, since the masses of a proton and of a deuteron can be measured with a mass spectrometer, the mass of a neutron can be deduced by subtracting proton mass from deuteron mass, with the difference being the mass of the neutron plus the binding energy of deuterium (expressed as a positive emitted energy).