Excursions in Science No. 4
Excursions in Science No. 4
Watch Excursions in Science No. 4 Online Free FlixHQ. The marvels of the "Electric Eye" scientifically known as the photo electric cell are very entertainingly presented in this industrial from the laboratories of General Electric. A narrator explains everything in popular language.
- Genre: Documentary
- Country: United States
- Director:
- Cast:
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