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| Management number | 221478756 | Release Date | 2026/05/03 | List Price | US$45.40 | Model Number | 221478756 | ||
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A Better Bell Jar and Ringer! Our Piezo Buzzer in Vacuum Chamber is the modern replacement for the Bell Jar & Ringer. The apparatus features a piezo buzzer enclosed within a clear acrylic tube suspended between two posts limiting the transfer of sound, and is controlled by a switch that has a red LED attached to show that it is on. When the unit is connected to a vacuum pump, the air can be removed, and the effect of sound being unable to pass through a vacuum clearly demonstrated. Sound returns when the air is allowed back into the chamber. An effective demonstration with none of the complications of the traditional apparatus.
| Theme | Physics |
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| Brand Name | Arbor Scientific |
| Manufacturer | Lascells |
| Material Type | Acrylic |
| Item Dimensions | 3.75 x 3.75 x 4 inches |
| Battery Description | 9V |
| Included Components | Vacuum chamber with piezo buzzer assembly, vacuum tubing with valve and stopper, and 9 V Battery. |
| Is Assembly Required | Yes |
| Educational Objective | Physics, specifically Sound and Vacuum |
| Manufacturer Part Number | 97-6600 |
| Manufacturer Maximum Age MONTHS | 780.00 |
| Manufacturer Minimum Age MONTHS | 156.00 |
| Global Trade Identification Number | 00850036181057 |
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