Doctors use various tools to monitor the health of patients. You can make a few of these tools, like the stethoscope, at home easily! Doctors use stethoscopes to listen to a patient’s heartbeat. In this project, you will learn to make your own stethoscope. Once you build a stethoscope, you will be able to hear the difference between active and resting heartbeat as well as the difference between your heartbeat and the heartbeat of others in the house.
Aim:
To make a homemade Stethoscope.
Apparatus Required
- A tubing piece
- Scissors
- A balloon
- A timer
- Rubber band
Procedure
- Take a tubing and fit a funnel at both ends.
- Enlarge the balloon by blowing and then letting the air out.
- Cut the top third of the balloon.
- Stretch the top of the balloon tightly above the open end of any one of the funnels. You can use a band to hold it in the correct place.
- Sit in a quiet place and keep the end of the funnel with a balloon on your chest towards the left centre of the skin.
- Keep the other funnel over the ear. You can hear a little beating sound.
- Make use of the timer to count the number of beats you hear in 20 seconds. Multiply this value by three to calculate how much your heart beats in a minute.
- Try doing more tests, like running for 5 minutes and checking how fast your heart beats.
The doctors listen to your heartbeats for two seconds with a stethoscope. The first sound is a low-pitched and longer sound, while the second beat is a higher and shorter sound.
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