Bell Jar with Battery Operated Buzzer

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470128-398EA 52.2 USD
Bell Jar with Battery Operated Buzzer
Educational Materials Physics Educational Materials Waves and Oscillations Learning Activities
This bell jar demonstrates that sound waves can't travel and therefore can't be heard without air or matter.

  • Battery-Operated Buzzer
  • Vacuum Seal Creates Absence of Sound
  • Bell Jar Shows Can't Be Heard without Air or Matter
  • Height: 14 cm
It features a battery-operated buzzer housed inside an acrylic tube. When the buzzer is placed beneath the jar, and a vacuum seal is created in the chamber, students observe a total absence of sound. Once air is returned to the chamber, the sound of the bell can be heard once more.

This activity requires a vacuum pump, not included.