Proměny energie (1952)
- Genre: Documentary
- Release Date: 1952-01-01
- Runtime: 1h 36min
- Language: Český
- Production Company: Studio populárně vědeckých a naučných filmů Praha
- Production Country: Czechoslovakia
- Writer: Josef Plíva
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| Editing | Josef Pejsar | Editor |
| Writing | Josef Plíva | Screenplay |
| Camera | Josef Plíva | Director of Photography |
| Sound | Otmar Mácha | Original Music Composer |
| Production | Vladislav Koželuh | Production Manager |
| Camera | Pavel Hrdlička | Director of Photography |
| Writing | Josef Plíva | Story |
