Frey Scientific Vacuum Bell Jar Demo, 5 Pieces

Frey Scientific Vacuum Bell Jar Demo, 5 Pieces, Item Number 1488086

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Frey Scientific Vacuum Bell Jar Demo

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<div class="long-description"><h2>Description</h2>Show your students how sound needs a medium to travel through with the Frey Scientic Vacuum Bell Jar Demo. Remove air from the jar. . .and listen as sound radiating from the bell gradually fades to silence! Kit includes a glass bell jar (6-1/2 D x 9-3/4 inches and 5 pounds of weight), vacuum base plate (8 D x 1-1/2 inches), gasket, hose, and battery-operated ringer electric bell (2 AA batteries sold separately). Bell jar has a vacuum pressure of less than/equal to --.06 MpA; rating of 3 VDC; withstands pressures from 14 to 104 degrees Fahrenheit (-10 to 40 degrres Celsius) at 85 percent of humidity. Full functionality of demo requires a vaccum pump (sold separately) to demonstrate the release of air.</div><div class="feature-description"><h2>Features</h2><ul><li>Simply connect a vacuum pump (sold separately) to airtight glass bell jar to experience sound and its intensity</li><li>Students will notice that sound fades as the air pressure falls within the jar</li><li>Sound will stop completely as all the air from jar gets pumped out to create vacuum inside</li><li>Bell jar is made of break-resistant, sturdy acrylic for safe, unbreakable handling by students</li><li>Vacuum bell jar demo set offers fun and classic experiment to demonstrate sound waves needing a medium (of air, liquid, or solid) in class or home</li></ul></div>

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Frey Scientific Vacuum Bell Jar Demo, 5 Pieces

$185.54

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