2 Theoretical basis of an all-optical atomic magnetometer The atomic magnetometer reflects the magnitude of the magnetic field by measuring the Larmor precession frequency of the polarization vector ...
National Engineering Research Center of Lower-Carbon Catalysis Technology, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning, China University of Chinese ...
But that was back in 1246, according to Time and Date. Due to something that is called orbital precession, there is a gradually opening gap between the solstices and the peri and aphelions.