Complex sentence: Called the "Million Volt Oscillator", the twin coils were installed on the balcony at the show and every hour the lights were dimmed for a display of its 10 foot arcs.
Split into simpler sentences: Called the "Million Volt Oscillator", the twin coils were installed on the balcony at the show. Every hour the lights were dimmed and the public was treated to a display of 10 foot arcs.