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!
Box of 100 X-SMALL nitrile exam gloves.
Great premium general purpose KingSeal Nitrile gloves in size SMALL. Not for medical use.
This set includes four (4) N95 NIOSH approved respirators.
Box of 100 First Touch powder-free LARGE Nitrile exam gloves.
These medium, powder-free Nitrile Exam Gloves are designed and manufactured for superior comfort and protection.
This set includes three (3) N95 FDA registered and NIOSH approved and respirators.
Discover a world of kaleidoscopic effects within this perfectly clear prism of the Light Crystal!
This high precision gyroscope will amaze you with rotational speed and ease of precision.
Experience this sphere powered by the sun!
An ancient toy featuring optical illusion and hands-on fun that never grows old!
This smaller transportable Van de Graaff Generator will easily fit in any classroom!
Illuminate both your room and your mind with this ingenious Periodic Table Lamp.
At xUmp.com you will find a large selection of scientific products carefully curated by real scientists and educators. We sell everything from educational toys, teacher supplies for science classroom, lab equipment, science toys, science fair supplies, classroom equipment, chemistry glassware, chemistry lab equipment, physics demos, electronics supplies, robots, science kits to geeky science gifts.