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Uranium Glass Ball
New
Out Stock

In the past, glass manufacturers added uranium to glass for color. Uranium has since become more strictly regulated, but the old uranium glass objects are still floating around. Because of the uranium content, these marbles glow bright green under ultraviolet light. ...

$5.00
Ferrofluid Display
New
8% Off
Out Stock

Ferrofluid is an iron-based liquid that reacts in the presence of a magnetic field. Comprised of nano-scale magnetic particles suspended in a transparent liquid, ferrofluid aligns itself to a magnetic field, making it easy to visualize the field. With this amazing magnetic...

$18.00$16.66
Glux Thermochromic Putty
New
Out Stock
Cephalopod Ink
New
Out Stock

Almost all cephalopods- the tentacled class of marine mollusks that include the octopus, squid, and cuttlefish- have the ability to eject dark ink from their body as a method of escaping predators. The melanin-based ink is stored in an ink...

$4.00
Glux Magnetic Putty
New
Out Stock

New magnetic GLUX putty with attractive properties! It’s infused with millions of magnetic particles. Includes a very powerful magnet to charge and demonstrate this putty’s unique powers. Recommended for Ages 14+Made in USA

$12.00
Helenite Glass Ball
New
Out Stock

Artificial glass from fused volcanic dust from Mt. Saint Helens.

$4.00
Invisible Blue UV Pen
New
Out Stock

Glows under UV light

$2.00
Humidity Indicator Card
New
Out Stock

This humidity indicator card is a useful tool to help protect sensitive items from exposure to too much moisture in the air. It works by taking advantage of the color-changing properties of the chemical cobalt dichloride (CoCl2). When dry, or...

$2.00
Apollo 11 Beta Cloth Patch
New
Out Stock

These patches were printed in 1969 for the Apollo 11 mission. After the tragic Apollo 1 launch pad fire that killed 3 astronauts, NASA decided to work on removing all flammable materials from the spacecraft cabin. A new material was...

$22.50
Hot Surface Indicator
New
Out Stock

This 1.5" yellow label is a temperature-sensitive indicator that appears blank when cold, but reveals the word “Hot” and a warning graphic when the surface to which the label is adhered exceeds 50 °C (122 °F). The graphic contains a...

$2.50
Refractive Projection Lens
New
Out Stock

If you look closely, you can see the slight curves on the acrylic surface of this lens. They may not look like much, but they have been precisely arranged to bend the light passing through the lens to form the image projection....

$19.95
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