Magnetic Moment of the Proton inH2O in Bohr Magnetons

We have measured the ratio of the magnetic moment of the electron in hydrogen to the magnetic moment of the proton in ${\mathrm{H}}_2$O to be $\frac{g_j\left(\mathrm{H}\right)}{{g_p}^{\prime }}=658.216\mathrm{}0091\left(68\right)\mathrm{}$ [10 parts per billion (ppb)], at a temperature of 34.7°C. This yields a value for the proton moment in Bohr magnetons of $\frac{{{\mu }_p}^{\prime }}{{\mu }_{\mathrm{B}}}=0.001\mathrm{}520992983\left(17\right)\mathrm{}$ (11 ppb). Our result differs from the currently accepted value by 150 ppb.