Looking Round The Corner (1938)

Good educational film on how periscopes, telescopes and other such devices work. Full titles read: “LOOKING ROUND THE CORNER !“ Diagrammatic M/S's of how light can be bent around corners. A drawing of a policeman is seen deflecting rays of light from a candle. The rays of light move upwards and another policeman points the light away in the opposite direction. The diagrams then go on to explain how this is the basic principle of how Prisms are used to bend light in a device known as 'Seebackroscope' (The device is similar in principle to a periscope). M/S and C/U's of a man holding a small telescopic device to his eye. Circular mask shot of a woman pulling up her stockings. M/S's of a woman looking through a pair of binoculars and a telescope. Diagrammatic shots of a cross section of the two devices to explain how they work. L/S's of a periscope on a submarine followed by a diagram of the positioning of the prisms inside the device. High angle shots of the coronation of King George V and of thousands