Bell in Vacuum

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Product Number: SB44677

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$99.95

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Grades 6-12. Nature, of course, abhors a vacuum - and sound waves won’t travel through one. Prove it with a ringing bell inside a sealed glass jar. As air is gradually pumped out of the jar, the bell becomes faint, then dies. Includes jar, vacuum plate with valve, rubber seal, bell system, and instructions. You need a vacuum pump and two AA batteries (not included). Bell may be removed for other vacuum experiments. The inside height is 8 in., and the diameter is 8 in. Includes bell jar, electric bell, base plate with seal, and instructions.

Item Weight: 5.50
Age: 11 yrs. - 18 yrs.
Prop 65:
Brand: Science First
Assembly Required: false
Grade: 6 - 12
School Type: Middle School, High School
Subject Areas: Physical Science
 

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