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09:14 IWF (Göttingen) Silent film 1949

Reizbewegungen bei Mimosa pudica

Sensitive plant. The leaves are bipinnately compound. When irritated the leafstalks droop and the leaflets fold together. Various experiments with different stimuli, function of the sensitive bristles, latency, stimulus conduction in the leaf and the plant, permanent stimulation, stimulus dependent reaction, cold and heat rigor, stimulating substances and ether narcosis.
  • Published: 1949
  • Publisher: IWF (Göttingen)
  • Language: Silent film
12:13 IWF (Göttingen) Silent film 1949

Spannungsoptik

Experimental setup. Systems of isoclinics and isochromatics. Decomposition of a light vector (animation). Brewster's law (animation). Structure of light compounds. Higher order of fringes. View in circular-polarized light. Formation of isoclinics; isochromatics fields. Examination of various bending bars and tension rods, girders and cogwheels (see also film C 785).
  • Published: 1949
  • Publisher: IWF (Göttingen)
  • Language: Silent film
Offline Collection Institut für Film und Bild in Wissenschaft und Unterricht, Abteilung Hochschule und Forschung (Göttingen) Silent film 1949

Urwaldzwerge in Zentralafrika

In the jungle camp of the Ituri-Pygmies: food preparation, making bark cloth, preperation of a hunt, hunting small animals, elephant hunt with a trap, cutting of the animal, building a suspension bridge in team work.
  • Published: 1949
  • Publisher: Institut für Film und Bild in Wissenschaft und Unterricht, Abteilung Hochschule und Forschung (Göttingen)
  • Language: Silent film
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