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қара дене
An ideal or imaginary body that is absolutely black when cold, but is a perfect absorber of radiation and at the same time a perfect radiator. Black body temperatures are used to work out the theoretical laws of radiation and to calculate the temperature of the sun.
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Гурон көлі
The second largest of the Great Lakes of North America, bounded on the west by Michigan (U. S. ) and on the north and east by Ontario (Can. ). The ...
