Physics on Etsy!

Eclipse Diamagnatic Sculpture

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Get a magnetic levitation sculpture here: 
From Etsy: BUY NOW Diamagnetic Levitation Sculptures 

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Eclipse diamagnetic levitation sculpture. Cast from diamagnetic Bismuth, a golden spherical neodymium magnet levitates trapped in a tunnel within the metal. Diamagnetic substances only have magnetic fields of their own when placed in an external magnetic field from another source- here the sphere magnet supplies the field. Diamagnetic fields are pretty weak though so a powerful cube neodymium magnet sits above the tunnel and is adjusted to help lift the sphere magnet against gravity. Trapped in equilibrium by these fields, any other magnet brought near will change the balance. 


Slinky on an Escalator Phonotrope Spinner

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3D Phonotrope Spinner: slinky on an escalator! When the rate of rotation matches the rate of the smartphone video process (wait for it) 12 animated 3D-printed slinkys “spring” into motion. The 3D printed and precisely placed depictions of the famous toy is specifically designed to interact with the video process, similar to the animation effect of a flip book, but in a repeating cycle like that of the phenakistiscope, the 1833 invention that started moving media animation that lead to the development of movies and video. 

Liquid Pythgorean Proof

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Liquid Demo of the Pythagorean Theorem: a proof, in physical form, of one of the most famous equations concerning the sides of any right triangle. The area of a square with side c of the hypotenuse is indeed equal to the sum of the areas of the squares of side a and b. An excellent print and design by Kiegan Brewer of Printed Teacher Crafts. 

Impossible Braid 

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From Etsy: BUY NOW: Impossible Braid Key Fob

Here is a great video on how to make the mystery braid

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See other Impossible Objects in my collection. 

Mystery Braid: challenge- how can three strands be braided if both sets of ends are connected? A favorite in my collection of “impossible objects”, this leather key fob is braided from a single piece of leather, constructed by making two parallel slits but not cutting the ends. The solution (demonstrated here with red felt) is well known to those in the field of leatherwork- due to a twist of topology it’s possible to make this braid if the number of left strand over right crossings equals the times the right strand crosses over the left. Four strands braided this way is not mathematically possible, but 3, 5, or any odd number can be done! 




Natural Mineral Fluorescence 

Get ruby in matrix stones and jewelry here:
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and find the sodalite bright orange fluorescent syenite here:
From Etsy: BUY NOW: Orange Glow Stones

You will also want an awesome UV flashlight like this one:
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Natural Mineral Fluorescence: Four mineral specimens that emit a surprising bright glow under long wave ultraviolet light (from left to right): a clear calcite crystal glows pink, a carved obelisk of grey syenite with grains of sodalite(bright orange), a carved piece of green fuchsite with red ruby inclusions(red glow) and veins of white calcite(bright white), and a polished slab of lapis lazuli with speckles of the mineral hauynite (yellow glow). The colorful glow comes from complex quantum mechanical behavior where high energy UV photons are absorbed and then lower energy photons are emitted- the physics of fluorescence.

Acasta Gneiss

Samples of the oldest know Earth rock available here: 
From Etsy: BUY NOW Acasta Gneiss Specimens 

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Wikipedia has the details on Acasta Gneiss and see the next video and links for more geophysics fun! 

Acasta Gneiss: this polished sphere is a sample from the oldest known rock formation on Earth- rocks from this area are dated as old as 4.03 billion years old based on multiple and mutually consistent radiometric dating techniques. This gneiss is only found in the Northwest Territories of Canada and was collected by Yellowknife resident Mark Brown.