United Scientific Buzzer in a Vacuum Apparatus

United Scientific Buzzer in a Vacuum 2163591

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United Scientific Buzzer in a Vacuum Apparatus Demonstration

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<div class="long-description"><h2>Description</h2>This simple apparatus from United Scientific demonstrates the properties and behaviors of light and sound in a near vacuum. The vacuum jar has a cushioned bottom that holds a buzzer with blinking LED lights. As air is removed from the jar using a vacuum pump (not included), observers will be able to easily see the blinking lights, but will notice that the sound from the buzzer decreases. This shows that sound needs a medium to travel through, while light does not. This handy device can also serve as a small vacuum jar for other experiments when the buzzer unit is removed. Includes activity guide. This experiment requires 4 AAA batteries and a vacuum pump, which are not included.</div><div class="feature-description"><h2>Features</h2><ul> <li>Tubing is 39 inches long with inner diameter of 0.236 inches to connect for convenient and easy connection to vacuum pumps</li> <li>Bell Jar can be used in other demonstrations requiring vacuums like inflating a balloon, causing a marshmallow to expand, or even boiling water</li> <li>One battery powered unit has flashing LEDs and a buzzer for easy operation</li> <li>Bell jar gasket reliably seals to create near-vacuum</li> <li>Battery operated using 4 AAA (not included)</li> </ul></div><div class="in-box-description"><b>Includes:</b> <ul><li>Buzzer</li><li>Bell Jar</li><li>Activity Guide</li></ul></div>

This Buzzer in a Vacuum demonstration is an excellent addition to physics lessons and science classrooms!

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United Scientific Buzzer in a Vacuum Apparatus

This Buzzer in a Vacuum demonstration is an excellent addition to physics lessons and science classrooms!

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