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Refrigerators came a long way until they became a common home appliance known to all. The first refrigerators originated from early scientific experiments and were not practical but in time were perfected and became indispensable in everyday life. Check out timeline of refrigerator technology.
People needed to keep perishable food on low temperatures before the refrigerator appeared as well as today. As a source of cold in the wormer months they used ice from lakes and rivers stored in ice houses during the winter. Read more about history of ice houses.
Primitive ideas of ancient peoples by today’s means were not that primitive after all. For instance these ideas allowed for desert people to have ice during summer when there was no ice for thousands of kilometers around. Yakhchal is one such idea.
Refrigeration is one of the main food storage techniques in developed countries. But it was not always so. To keep our food cool we had to harvest ice from the nature itself. Today almost every household has a refrigerator. Read about refrigerator history.