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Step 3THE STETHOSCOPE
A stethoscope amplifies sound when the membrane at the end of it picks up vibrations through contact with an object. The membrane is of relatively large diameter, compared to the diameter of the stethoscope hose. Slight movement of the membrane causes air inside the stethoscope head to move. A little bit of motion of the air inside the large diameter head will result in a larger movement of air inside the small diameter hose. When you put your ear next to the end of the hose, the amplified movement of air results in amplified sound.
When you start listening to the world through a stethoscope, you hear all sorts of things you never were aware of.
When you start listening to the world through a stethoscope, you hear all sorts of things you never were aware of.
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