How does stethoscope work

Steteoscope is the name of the instrument to listen to the sounds coming from the body.

To listen to the diaphragm at the end of the stethoscope, it is a round circle -shaped piece that touches the patient's skin. There are their own voices in the body. Experts know these voices with the trainings they receive. Rene Theophile started by Hyancinthe Laennec.

Steteoscope has been tested from many experiments until he gets his present shape.