When did the first ovens appear? Detailed answer

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When did the first ovens appear? Detailed answer

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When did the first ovens appear?

At the beginning of the XNUMXth century, stoves began to appear, although the hearth was still the main source of heat in the house. The stove was more efficient than the hearth, since it was inside the room and heated it both by radiating heat and by moving hot air. The movement of air means that when heated, it rises, and when cooled, it falls down.

The very first ovens were made of clay or brick with wrought iron or bronze doors. As wrought iron became cheaper, stoves were made entirely from it. Metal conducts heat much better than clay or brick, so iron stoves were a great improvement. They gave more heat and better warmed the air in the room.

The first metal furnaces were called five-plate. These were boxes made of five wrought iron plates: one on top, one on the base, and one on three sides. The fourth side was open: with it the stove was inserted into the fireplace, so that the smoke went out into the chimney.

The first metal stoves that did not have to be placed in the fireplace were made in Holland and Scandinavia. They were six-plate, as they were made from six wrought iron plates that formed the six sides of the box. The stoves had a door to put in the fuel and shovel out the ashes. They also had a blower - a hole through which air passed for better draft, and a hole at the top to which a chimney pipe was attached.

The first stoves were fired with wood, coal or other cheap local fuel. In the 1820s, a charcoal-fired stove appeared in America called the plinth stove. It was designed to be fired with small pieces of coal, which were cheap. Coal burned on a grate in a firebox. Such a stove could be heated 24 hours a day.

Author: Likum A.

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A group of scientists from Germany, Spain and Italy showed in experiments on mice that in the process of memorizing new information in the brain, new connections between neurons are simultaneously formed and existing ones are weakened.

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