Bell Jar With Battery Operated Buzzer [80620]

£39.98
- +

Available to back order: the soonest available delivery date will be confirmed via email when you order this item

Add to wish list ?

?

Got a question?

We're here to help....

Visit our FAQs page

Email our sales team
sales@betterequipped.co.uk

Alternatively give us a call
0800 970 7142

Delivery & Returns

We're here to help....

Visit our Terms & Conditions page

Email our sales team
sales@betterequipped.co.uk

Alternatively give us a call
0800 970 7142

Without air or matter, sound waves cannot travel and therefore cannot be heard. This bell jar effectively
demonstrates this concept using 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 will observe a total absence of sound. Once air is returned to the chamber, the sound of the buzzer can be heard once more. Activity requires a vacuum pump, not included. Height 14cm, dia. 10cm.