- Acrylic bell jar
- Electric bell operating on 4-6V DC
- Requires a vacuum pump (not included)
EISCO Bell in Vacuum Jar - Acrylic, 4-6V DC
(1) Bell Jar, (1) Electric Bell, (1) Rubber cork with terminals
Demonstrate that sound requires air to travel through with the Bell in Vacuum Jar set. Slowly decrease the air inside and hear the sound disappear. Electric bell operates on 4-6V DC.
This requires a vacuum pump to work.