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!
Get this great introductory chemistry kit for your favorite young scientist!
Explore the wonders of wind power with this amazing kit!
Use this awesome prism to teach about optics and light in the classroom setting!
Use this cool Sea Monkeys zooquarium to teach your child how to take care of a pet!
This beautiful candle holder is carved out of natural amethyst!
Heavy-duty microscope for high-school and college biology labs. Magnification of up to 1000X.