Originally produced for use on television, this film shows some of the unusual uses of alginic acid compounds derived from seaweed. Applications of alginate compounds in the foods tit If and textile industries are illustrated.
A discussion of various types of coal fuel followed by a detailed description of the construction and operation of a furnace using pulverised fuel. Lists the advantages of pulverized fuel firing and ... More »
The film sets out to describe the factors of stereoscopic vision and their projection requirements, especially geometrical. The various practicable methods of projection and viewing aids are ... More »
Traces the discovery of magnetic properties from natural lodestone to the researches of Oersted and Faraday leading to the theory of lines of force and the magnetic field. Explains paramagnetism and ... More »
An amusing and somewhat extreme example of the use of time-lapse photographic techniques, it completes the one-hour railway journey from London to Brighton in less than four minutes. Photographed at ... More »