Comment on Jackson's analysis of electric charge quantization due to interaction with Dirac's magnetic monopole
  In J.D. Jackson's Classical Electrodynamics textbook, the analysis of Dirac's
charge quantization condition in the presence of a magnetic monopole has a
mathematical omission and an all too brief physical argument that might mislead
some students. This paper presents a detailed derivation of Jackson's main
result, explains the significance of the missing term, and highlights the close
connection between Jackson's findings and Dirac's original argument.
