The vanes, or wings, in this solar radiometer are alternately dark and light in color. When the light strikes these wings it transfers heat to each one - but not at the same degree. The lighter wing reflects the rays and the darker wing absorbs. The stronger the light, the more energy there is to heat up the darker side of the wing causing the wings to spin faster. It spins under the solar light or a regular light bulb. Great for science projects, as a gift or as a desk amusement!
Highly durable lab apron made of rubberized cloth is impermeable and easy to clean, perfect for all manner of lab or classroom experiments
Extra thick medical examination gloves - 60mil. Great for extra protection.
Large nitrile exam gloves designed and manufactured for superior protection against viral, bacterial, and certain chemical hazards.
Durable, anti-fog safety glasses that fit comfortably on any head size.
These ear plugs are made of self adjusting foam that provides a comfortable, low pressure fit and excellent sound filtration.
These goggles meet the ANSI Z87.1, 2010 High Impact standards.
This SUPER Erector Construction set is one of the best you'll find anywhere!
This classic device is used to demonstrate the conservation of mechanical energy.
The Wimshurst Machine is a high quality static machine for student labs.
Learn how solar cells transform light into electrical energy with this great kit!
You don’t think recycling is cool? Get a look at this, we’re sure you’ll change your mind!
Build an electromagnet, an electrical catapult, a doorbell chime, a telegraph, and more with this kit!
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.