#OnThisDay in 1963 #DoctorPolaris debuted in #GreenLantern #comics #21 #medicalPersonality who promotes #theHealingPowerOfMagnetism #performsAtACharityBenefit while his #evilCostumedPersona #robsTheShowsBoxOffice #GreenLanternProbesHisMind and #projectsImagesOnTheWall #revealingHisActionsToReporters