Refrain: C Em F C F G André Ampère’s magical, mystical, wonderful law! G C G7 F C G7 C Of Maxwell’s equations, it is the longest and strangest of all! C F G C On the left side, he wrote circulation C F G C Of magnetic field, ‘cause it was neat. C F G C On the right hand side of his equation -- C F G C Mu-naught I – he thought it was complete. (Refrain) F C G C C7 Decades later, Maxwell saw disaster, F C G C Although he thought of Ampère as a saint -- F C G C C7 In between the plates of a capacitor F C G C The right side’s zero, but the left side ain’t! C F G C To fix this problem, he added to the right side C F G C Displacement current, a brand new quantity! C F G C It started mu-naught eps’lon-naught and ended by C F G C The time derivative of phi-sub-E. (Refrain) C F G C And so to Maxwell the myst’ry was reveal-ed-- C F G C He saw how light could move through empty space. C F G C The changing B-field made the changing E-field, C F G C And vice-a-versa, all at the perfect pace. (pRefrain)
Words & music by Walter Smith Chords by Marian McKenzie