Documentary · Czechoslovakia · 1952 0 Proměny energie ✓ Seen + Watchlist ↗ Share No poster Director Cast Antonín Zíb as Commentary (voice) Crew Josef Plíva — Director of Photography Pavel Hrdlička — Director of Photography Josef Pejsar — Editor Otmar Mácha — Original Music Composer Josef Plíva — Screenplay Josef Plíva — Story Synopsis Mood & Themes physics Key Collaborators Josef Plíva Director of Photography Pavel Hrdlička Director of Photography Josef Pejsar Editor Otmar Mácha Original Music Composer Josef Plíva Screenplay Josef Plíva Story Follow the Thread More Documentary → Josef Plíva's cinematography → Pavel Hrdlička's cinematography → Agent-readable