Traditional Culture Encyclopedia - Traditional festivals - What physical principle does the stethoscope mainly use?
What physical principle does the stethoscope mainly use?
Physical principles:
1, available information;
2. The sound propagation in the duct is directional.
Stethoscope: it is the most commonly used diagnostic instrument for women and children doctors at home and abroad, and it is the symbol of doctors. Modern medicine began with the invention of the stethoscope. Since the application of stethoscope in clinic, its shape and sound transmission mode have been continuously improved, but its basic structure has not changed much, and it is mainly composed of pickup part, conduction part and listening part.
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