Displacement Current - a massive fraud
Maxwell made as people say "one of the greatest intellectual leaps ever made." Sadly, this may look fine in a a mathematical sense, but doesn't stand up to critical analysis. All electrical energy is, by definition TEM (Transverse Electromagnetic) with the Electric Field E and Magnetic Field H inextricably linked. In a Capacitor so called Displacement current is merely the measurement of an H field during a changing TEM applied signal. (Whether this is the Charging of said device or an applied time varying signal)
Regardless of any mathematical convenience there is no such thing as Displacement Current in the real world.