Science (Other)
1940s
13182_27799_radio_technology5
Explains electric and magnetic fields, generation of electro-magnetic…
1940s
13182_27799_radio_technology1
Explains electric and magnetic fields, generation of electro-magnetic…
1940s
13182_27799_radio_technology2
Explains electric and magnetic fields, generation of electro-magnetic…
1940s
13182_27799_radio_technology3
Explains electric and magnetic fields, generation of electro-magnetic…
1940s
13182_27799_radio_technology4
Explains electric and magnetic fields, generation of electro-magnetic…
1950s
13183_38570_preserving_foods3
Footage of microscopic level of yeast. A woman shown kneading dough and…
1950s
13183_38570_preserving_foods4
Shots of petri dishes and various moldy foods. Footage of a scientist…
1950s
13183_38570_preserving_foods5
Footage of a plant growing and developing, with shots of its roots…
1950s
13183_38570_preserving_foods6
Footage of milk being pasteurized. Shots of cans on an assembly line…