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!
The large realistic model has removable organs that can be studied and set back into the correct position.
This is a classic demonstration toy of the powers of magnetic fields!
A touch of joy. A touch of science. Light responds to your touch and to the music in your room!
NEW 2016 DESIGN! This hip red tee features Pi to 1000 decimal places on an ultra soft 100% cotton shirt.
This chemistry learning and experiment kit comes with components and chemicals for over 75 amazing experiments!
See the solar system in action!
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