SHOW FILTER (14)
Martian Regolith Simulant Set
New
Out stock

This set includes two important samples of regolith engineered to be chemically and physically identical to the surface dust of planet Mars. Martian Global Regolith Simulant is a global average of surface dirt based on data collected by Curiosity and Opportunity...

$18.00
Yellow 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. ...

$9.00
Small Magnetic Field Demonstrator
New
Out stock

This is a quick and clean way to visualize magnetic fields. The demonstrator is a transparent acrylic case that holds iron filings. When it is placed over a magnet, the field pattern can be viewed directly, or it can be...

$5.00
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
Tungsten Black Hole Model
New
Out stock

WE LAUNCHED THIS PRODUCT ON KICKSTARTER AND IT WAS FUNDED OVER 200% If you compress any amount of mass, it becomes denser. If you compress it enough, it will become so dense that light can no longer escape it—this size...

$40.00
Rattleback
New
Out stock

A rattleback is a type of spinning top that prefers to spin in one direction due to its unique semi-ellipsoidal shape. When spun in the wrong direction, it will automatically shift momentum until it spins in the opposite direction. This is caused by...

$2.50
Large Magnetic Field Demonstrator
New
-24%
Out stock

This is a quick and clean way to visualize magnetic fields. The demonstrator is a transparent acrylic case that holds iron filings suspended in a fluid of mineral oil. When it is placed over a magnet, the field pattern can...

$29.95$22.95
Retroreflective Glass Beads
New
Out stock

These microbeads are retroreflective beads—tiny glass spheres designed to effectively reflect light back to the light source. They are commonly applied to wet paint to create reflective surfaces and markings. They work by allowing light to pass into one side of the...

$5.95
Solids of Constant Width (Set of 3)
New
Out stock

These solids of constant width behave like spheres. This is because, regardless of the peculiar shape, the diameter is still equal at every point. You can demonstrate this property by setting a flat object, like a book, on them and it will...

$9.95
Shashibo Box
New
Out stock

Can you create more than 70 shapes?  Unlock the mystery of Shashibo! Each Shashibo is powered by 36 rare earth magnets. 1 cube transforms into over 70 shapes. Combine 2 or more Shashibos to build larger shapes and create more possibilities. Can you master...

$25.00
Green 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. ...

$7.00
Aerogel
New
Out stock

Aerogel is one of the most impressive materials humans have created...so far.   Comes in a 1oz vial (approximately 1 heaping handful) of silica aerogel particles—the world's lightest known solid material. Commonly called "frozen smoke", it is safe to touch, hydrophobic (repels...

$16.00
Water Beads
New
Out stock

These tiny beads are made of a super absorbent polymer that can soak up a surprising amount of water. Plus, since they are almost entirely water when fully absorbed, they have the same refraction index as water and become invisible.  ...

$3.00
Tube of 20 Neodymium Magnets
New
Out stock

Our mighty 4mm cubic rare earth magnets are incredibly useful, mesmerizing to fiddle with, and a steal for only 5 bucks for a tube of 20. We had these custom manufactured to the highest magnetization the factory could concentrate into...

$5.00

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