L/S of an army vehicle (some kind of jeep) driving towards a little bridge. M/S of a vehicle crossing the bridge and stopping in the middle. A man comes out of the vehicle, looks underneath the bridge, goes back to a car and drives off. C/U shot of a man talking into black...
Experiments using electricity to shatter different kinds of materials.
A large power press crushes a tree trunk, a watch face and a riveted joint.
Footage of Scientist experimenting with coal dust in laboratories.
Machines which make "man-made lightning" are demonstrated.
Harmonograph recording two or more connected movements is presented at G.W.R Show.
Proposals for construction 'perpetual motion' machines - none of them works.
Road safety campaign for children in London.
Ghostly white shapes emerge against a black background - no soundtrack.