Description

Our quality Vacuum Bell Jar Demo is a great tool to discover how sound requires a medium to travel through. Remove the air from the jar and the sound from the bell gradually fades. The Demo includes a glass bell jar, vacuum base plate, gasket, hose, and battery-operated ringer electric bell.
• Requires 2 AA batteries and a vacuum pump (catalog Item #6080-00 or 6076-11), not included
Technical Specifications:
• Vacuum Pressure for Bell Jar: <= -0.06MPa • Electrical Specification: 3V DC • Temperature: 14 to 104°F (-10 to 40°C) • Humidity: 85% Max • Bell Jar: 6.5" Dia. x 9.75" tall (inside Dia. 6.25" x inside height 8") • Base: 8" Dia. x 1.5" H