![What do we know about light?](/dq-content/themes/movie/img/no-cover.jpg)
What do we know about light?
- Year: 1955
- Country: Czechoslovakia
- Genre: Documentary
- Studio: Studio populárně vědeckých a naučných filmů Praha
- Keyword: educational, quantum physics
- Director: Bohumil Vošahlík
- Cast: Jiří Šrámek
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