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the stethoscope is a medical instrument used by doctors for tapping the internal organs of the human body. prior to his invention of the doctors put his ear directly to the chest of the patient. the year 1816 to René lènnek young French doctor came an elderly woman he had to prosluŝat′ her lungs. because the patient suffered overweight doctor was hard to do. Tu he remembered children's game quickly rolled sheet of paper into a tube and put an end to the patient's breast. tube reinforced sound, and the doctor was able to easily listen to her lungs. paper tube has been replaced by a hollow wooden tube. and this invention was called the stethoscope
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