Complex sentence: The Tesla coils for many of these movies were constructed by Kenneth Strickfaden (1896-1984) who, beginning with his spectacular effects in the 1931 "Frankenstein", became Hollywood's preeminent electrical special effects wizard.
Split into simpler sentences: The Tesla coils for many of these movies were constructed by one man. Beginning with his spectacular effects in the 1931 "Frankenstein", Kenneth Strickfaden (1896-1984) became Hollywood's preeminent electrical special effects wizard.