Testing Domestic Appliances Aka Electric Gadgets (1958)

Leatherhead, Surrey. M/S of a laboratory where household appliances are tested being for faults. On a table are two electric fires - one with a safety guard, one without. Two scientists dressed in white coats are holding with metal tongs scraps of fabric in front of each fire. The scrap held in front of the unguarded fire burns rapidly while the other remains in tact. C/U of the slightly scorched scrap being held in front of the guarded fire, before being placed onto the table. The narrator explains these experiments are part of the work of the Electrical Development Association. High angle M/S of another area of the laboratory. On a grey felt bed, a scientist is unfolding the insulation from an electric blanket. Two sheets of foil and placed on either side of the insulation before a grey felt cover is rolled over it. Two metal weights are placed on top of this. C/U of one of the scientists operating the machine which is about to shoot one thousand volts through the foil for sixty seconds -