Bell jar with battery buzzer
Bell jar with battery buzzer
In stock
Ready To Ship
SKU:
P579
$98.89
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Completely safe to touch and handle, simply complete the circuit by touching both electrodes at the end of the stick simultaneously.
Without air or matter, sound waves cannot travel and therefore cannot be heard. This bell jar effectively demonstrates this concept using a battery–operated buzzer housed inside an acrylic tube. When the buzzer is placed beneath the jar and a vacuum seal is created in the chamber, students will observe a total absence of sound. Once air is returned to the chamber, the sound of the buzzer can be heard once more. Activity requires a vacuum pump, not included.
Height 14cm, 10 cm Ø
| Length (cm) | 20 |
|---|---|
| Width (cm) | 20 |
| Height (cm) | 15 |
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