The molecules and atoms vibrate at higher temperatures and begin to push apart from each other. This phenomenon is known as thermal expansion. Simply heat the brass ball for two minutes. This will cause the ball to expand; hence it will not fit through the ring. When the ball cools down, it will once again fit smoothly through the ring. Great for the classroom or the home laboratory!
This is a great clean heat demonstration model for the classroom setting!
Command robotic creations with this cool construction kit!
Over 300 electronics projects in this kit will keep the young scientist busy!
Learn Chemistry While Creating Sweet Treats
This SUPER Erector Construction set is one of the best you'll find anywhere!
Great microscope for viewing both slides and 3D objects such as flowers, bugs, rocks and more. Includes all accessories!