Excursions in Science No. 4

Excursions in Science No. 4

Excursions in Science No. 4


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0h 09m 1937 HD

Voir excursions in science no. 4 sur FrenchStream. 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.

Excursions in Science No. 4 (1937)
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