Invisible Forces; Science in the Creamery

Duration:

Year Published: 1920

Creator: Film Featurettes Inc

Complete Record: Movie #1 Invisible Forces: Capillary Action, Surface Tension, Cohesion. Scientific demonstration of these forces; very clear images of these processes; all silent with inter-title cards. Movie #2 Science in the Creamery: Start to finish explanation of the science of testing and processing milk for consumption; several laboratory views; silent: all text on inter-title cards.