| FLAME THAT FREEZES (HOW A FRIDGE WORKS) Short film explaining how the refrigerator works. | ||
|---|---|---|
| Tape Master: | 7027 | |
| Catalog #: | 508442 | |
| Clip Number: | 508442-1 | |
| Orginal Film: | NSP 147 | |
| Timecode: | 01:12:27 - 01:14:54 | |
| Location: | England | |
| Year Shot: | 1939 (Actual Year) | |
| Audio: | Yes | |
| Color: | No | |
| Headings: | DOMESTIC LIFE: Meals & Cooking FOOD: Misc INVENTIONS: Domestic LOCATIONS/EUROPE: UK, England SCIENCE: Misc | |
| Description: | FLAME THAT FREEZES (HOW A FRIDGE WORKS) Short film explaining how the refrigerator works. A man eating a soup - he blows in direction of spoon to cool the soup as he eats. A woman walking towards a refrigerator - 'a new way of cooling things'. She lights the fire at the back of it showing the burner. 'If she wants to cool something, she heats it' - says voiceover. Various drawings explaining how the system works. A hand is sprayed with a cologne (as a spirit, it is great absorber of heat), cologne absorbs the heat from hand, spirit evaporates and leaves the hand cold. Another diagram shows liquid ammonia (also a great absorber of heat) evaporating into hydrogen. In order to vaporize, ammonia absorbs all the heat from its surrounding and leaves it cold. When it evaporates into hydrogen, a fresh supply of ammonia is needed. A steady supply of ammonia ensures continuous refrigeration. Combined ammonia and water, when heated ensures a fresh supply of liquid ammonia and hydrogen. More diagrams showing the structure of refrigerator. Various shots of a man showing the apparatus. Several shots of a waitress opening refrigerator to get cool drink for a customer sitting at one of the tables reading newspaper. She places his drink at the table and leaves. Man takes the glass without looking at it and as he tries to drink his drink, he realizes that it is frozen. He turns the glass up side down and his 'drink' falls on the table - a glass shape ice 'sculpture'. | |
WPA FILM LIBRARY
