Part of issue HELP YOURSELF.
Pathe Studios, London.
Various shots of cameraman and studio technician adjusting lighting in studio to prevent glare. Various diagrams showing how light waves reach human eye from light source. Various diagrams showing how crystal discs or glass plates...
Excellent investigation of the difference between straight hair and curly.
Slow motion footage of a speed typist.
Item showing manufacture and use of certain gases.
A look at how atoms form molecules to make up things like salt and ice.
A look at how lenses in the eye and camera work.
A look at the role of shadows in life.
A look at a 14 inch home-made telescope and how it works.
A look at how the depth below a ship is measured.