The internationally recognized value of a proton's cost radius is 0.8414 fm.[forty nine] The radius with the proton defined by a method that may be calculated by quantum electrodynamics and be derived from both atomic spectroscopy or by electron-proton scattering.Healthful Residing eNewsletter Sign on to acquire well timed information on subjects

CPT-symmetry puts potent constraints within the relative Qualities of particles and antiparticles and, as a result, is open up to stringent tests. One example is, the charges of a proton and antiproton have to sum to just zero. This equality has been analyzed to 1 component in 108. The equality in their masses has also been examined to much better