Description
- Import of ECE
- Compatible with the curriculum
- It is a visual educational material designed for the experiment of sound transmission in airless environment
- It can also be used in experiments such as vacuum fountain, evaporative icing, vacuum coating, atmospheric pressure, etc.
- The bell jar, made of quality PVC material, can be used in sound propagation experiments. Thanks to its transparency, it allows observation during experiments, and thanks to its lightness, it can be carried easily and allows experiments to be carried out in different environments.
- 2 pieces of D batteries required for the bell to work will be provided by the user.
Set Content:
- Multi-purpose PVC bell jar
- Electric bell
- Air pump
- Connecting hose
Application 1 (Sound transmission experiment in airless environment):
- Put the electric bell inside the bell jar, turn on the bell, and close the bell jar.
- Take the air out of the bell jar with the help of the pump provided with the product.
- Even though the bell is ringing, the ringing sound heard will gradually decrease.
- Close the valve to prevent air entry. Observe what is happening.
- Allow air entry by opening the valve. The chime will be heard again.
Attention: The experiment set is designed to observe the difference in sound heard in an environment with air and in an environment without air. Absolute silence may not be achieved.Application 2 (Boiling of water at low pressure experiment):
- Put a glass of boiling water into the bell jar and close the bell jar.
- Take the air out of the bell jar with the help of the pump supplied with the product.
- Close the valve to prevent air entry.
- You will see that the water in the glass is boiling.
Working of the Bell:
- Open the battery compartment cover located behind the bell.
- Insert the 2 D batteries supplied with the product into the battery compartment, paying attention to their polarity.
- Activate the bell using the on/off switch on the bell.
- If the buzzer does not work, adjust the screw distances.
Targeted Gains:
- Predicts the environments in which sound can propagate and tests its predictions.
- Gives examples of reflection and absorption of sound.
- Makes predictions and tests its predictions to prevent the spread of sound.
- Explains the importance of sound insulation.
- Gives examples of acoustic applications.
- Designs environments that will set an example for sound insulation or acoustic applications.
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