One type of them is named after Wu and Yang, and they can be viewed as a subset of dyons, while a nonsingular type of them is named after 't Hooft and Polyakov.  
One type of them is named after Wu and Yang, and they can be viewed as a subset of dyons, while a nonsingular type of them is named after 't Hooft and Polyakov.  An observation of one of them on Valentine's Day of 1982 using a SQUID was reported by Blas Cabrera.  They are often predicted by Grand Unified Theories, while Dirac showed that their existance would imply the quantization of electric charge.  However, they violate one of Maxwell's equations that says that the divergence of the magnetic field is zero.  FTP, identify these hypothetical objects that have a non-zero magnetic charge.
One type of them is named after Wu and Yang, and they can be viewed as a subset of dyons, while a nonsingular type of them is named after 't Hooft and Polyakov.  
magnetic {monopole}