Sound waves will not travel through a vacuum. Prove it with this demonstration of a ringing bell inside a sealed glass jar. As air is gradually vacuumed out of the jar, the bell will become faint, and will eventually become silent. Great demonstration model for the classroom setting.
Learn how solar cells transform light into electrical energy with this great kit!
See the constellations visible in the Northern Hemisphere on this watch!
This caffeine molecule mug makes an excellent gift!
Create beautiful art with this amazing sun paper!
Build 20 different solar powered models with unique building pieces, controlled by an RC handset!
Build a robot that's an artist too!