Physics on Etsy!

5 Shuttle Trammel of Archimedes

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See/buy a 3-Shuttle version here: 
From Curiosity Box: 
Trammel of Archimedes

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Trammel of Archimedes

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Trammel of Archimedes


See this great video by the Mathologer for more details: Secrets of the Nothing Grinder 

5 Shuttle Trammel of Archimedes: similar to yesterday’s post- but more math is revealed as extra shuttles are added. As the shuttles take turns completing their straight line journeys, the end of the crank arm traces an ellipse- and each of the five shuttle points define points on a smaller circle that rolls within the perimeter of the device. This version was crafted from fine maple, cherry, and oak by artisan Neal Olsen. 

Superellipsoid

Vintage Super Eggs of Piet Hein can be found on eBay: 
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Superellipsoid by Piet Hein 


Get one in brass from this shop: 
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Brass Super Egg 

Superellipsoid: the "super egg" is a mathematical creation of Danish scientist and artist Piet Hein (also the inventor of the Soma cube puzzle). The equation of the superellipse is that of a regular ellipse, but raising both sides to the power of 2.5 instead of 2- the resulting curve had a flattened end that allows the superellipsoid to stand upright. The superelljpse has found use in architecture and design. This super egg is made of stainless steel.

Chorus Line Kaleidoscope

This type of kaleidoscope is hard to find and mostly made by artists. Here are two examples currently avaliable:

From Etsy: BUY NOW: Chorus Line Kaleidoscope

From KaleidoscopeShop.com: BUY NOW: Chorus Line Kaleidoscope

Click here for affordable, precision made scopes with angled mirrors: Kaleidoscope Symmetries Explored

Chorus Line Kaleidoscope: an interesting and uncommon kaleidoscope design where two mirrors are placed with surfaces parallel to each other- resulting in a side by side strip of alternating images. Here the camera is attached to the view port and the entire tube is rotated to produce the changing patterns. The kaleidoscope was invented by the famous Scottish physicist Sir David Brewster (1781-1868), and has become an entire field of artistic endeavor.


Phase Locking Folk Toy: Hooey Stick

Versions of the Gee Haw Whimmy Diddle available from these sources:

From Etsy: BUY NOW: Hooey Stick Folk Toy
From Amazon: BUY NOW Hooey Stick Folk Toy
From eBay: BUY NOW Hooey Stick Folk Toy

Phase Locking Folk Toy: rubbing the stick over the notches creates both vertical and horizontal vibrations- and leads to an elliptical motion of the nail in the center of a propeller, which begins to rotate due to friction with the nail. This toy is called a Gee-Haw Wimmy Diddle (see the Wikipedia page- I kid you not) or a Hooey Stick. Note that depending on how the stick is held, the propeller will spin clockwise or counterclockwise. 

CineSpinner Hula Santa

CineSpinner animation kinetic art availabe here:

From Etsy: BUY NOW: CineSpinner Santa

From Etsy: BUY NOW: CineSpinner (many animations)

CineSpinner Hula Santa: ole St. Nick showing off his hooping skills in this barrier-grid type animation using Moiré pattern effects of constructive and deconstructive interference. One of many CineSpinner type kinetic animation loops by Scanimation creator, artist, and author Rufus Butler Seder. 

Nixie Tube Clock

The Nixie Tube Clock in the video is of amazing craftsmanship- real hardwood with brass accents and solid construction. Get one from this excellent shop: 
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Nixie Tube Clocks 

Nixie Tube Clock: long before there were 7 segment LED displays there was the Nixie- cold cathode tubes with a wire mesh and 10 cathodes shaped in the form of numerals 0-9 that illuminate through neon glow discharge. The “Numeric Indicator eXperimental 1” or NIX 1 was introduced in 1955 by Burroughs Corporation and manufactured until the 1990s. This clock uses modern electronics to power Russian versions called the ИH-19A where the numbers are stacked so the front symbols obscure each lighted cathode minimally: from back to front 1320984756. 


Glass Spirals Kinetic Ornament 

Sometime available from these sources: 

From Etsy: BUY NOW: Glass Spiral Ornaments 

Glass Spirals Kinetic Ornament: a thread of glass is shaped into connected helixes in this holiday decoration- one clockwise the other counterclockwise. When spinning the rotational motion creates translational motion both upwards and downwards along the vertical direction. Mesmerizing holiday decor! 

 

Sphere Sticks Geometric Puzzle

Get this affordable and amazing puzzle here:

From Etsy: BUY NOW: Sphere Sticks

Sphere Sticks Puzzle: 30 identical wood pieces, each with two notches as shown, can create 12 interlocking pentagons in a perfect symmetry- look carefully and you can see that each rod is in an identical configuration with the 4 others that connect with it. Precision cut notches on the rods allow them to interlock with elastic tension such that vector sum of the 4 forces sum to zero in this tensegrity type equilibrium. The dodecahedron, with its 30 edges and 12 sides, is the basis of this puzzle sculpture. 

 

Rhombic Blocks Mathematical Puzzle

This beautifully made puzzle available here:: 
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Rhombic Blocks 

Rhombic Blocks Mathematical Puzzle: There are 9 possible ways three rhombuses can be joined together along a common edge, and similar to pentominoes, these 9 tri-rhombs can tile a polyhedron, in this case a hexagon. There are 14 solutions to this puzzle, and one where no same-colored pieces touch. A beautiful math discovery by puzzle master Stuart Coffin.


Half Seirpinski Octahedron Fractal

Get this amazing 3D print here:
From Etsy: BUY NOW: Seirpinski Pyramid

or print it yourself:
From Thingverse: Seirpinski Pyramid

Half Sierpinski Octahedron Fractal: this 3D printed math sculpture is one half of the sixth iteration of what is called “the octahedron flake” a 3D fractal based on the Sierpinski triangle. To make this fractal, on each iteration an inverted triangle is removed from the center of the previous triangle, and if this process is repeated indefinitely one gets the famous fractal. For this 3D print, the maker Travis Quesenberry used rainbow silk PLA to create the beautiful color gradient base on the .stl files by Rick Tu. Another example of math brought to life via 3D printing!