Physics on Etsy!

Interactive Logic Gate Display

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From Etsy: BUY NOW: Interactive Logic Gate Display

Interactive Logic Gate Display: the most basic four binary/Boolean logic operations that are the fundamental components of modern computers- presented here appropriately on a standard green printed circuit board (PCB) complete with the truth table for each device. These logic gates are the basic building blocks of any logic circuit, from multiplexers, arithmetic logic units, and computer memory to full microprocessors which may contain hundreds of millions of such gates on a microchip. An educational, elegant, and fun design by Tyler Jacobs. 

Colored Ferrofluid Display Cells

Available on Etsy: BUY NOW Motion Ferrofluid Sculpture 

Colored Ferrofluid Display Cells: spectacular metallic blue, gold, and black display cells by czferro - colloidal ferromagnetic liquids in a specially prepared water-alcohol suspension. Curious behavior results from the interplay between magnetic force and surface tension. The gold and blue coloring appears to be from a thin coating at the boundary between the ferrofluid and the suspension liquid. Still exploring the details of the coloring and the specific makeup of the clear suspension fluid - both trade secrets it seems. 

Aristotle's Wheel Paradox 

Get this demonstration puzzle here:

From Etsy: BUY NOW: Aristotle's Wheel

WIkipedia has some details on the Wheel "Paradox"

Aristotle’s Wheel “Paradox”: How does the smaller attached disk travel the same length as the larger one if both disks only make one full rotation? Note the shorter path of the smaller disk, if rolled on its own. This beautifully made demonstration depicts an issue of geometry and motion that perplexed the best minds of humanity for 2000 years. The ancients knew the formula for circumference, and C=2πR for the large disk is clearly greater than C=2πr for the smaller- so how could the smaller disk, rotated once, still travel the distance of the larger one if attached? The great Galileo even offered a solution to the problem in his book Two New Sciences, where he approximated the situation as concentric hexagons and considered the limit as the number of sides increased. So what is the best answer to make sense of this situation?


Heritage Periodic Table: Collector's Edition

The Collector's Edition Periodic Table with 85 element samples: 
From Etsy store ProtoshopLLC : BUY NOW Heritage Periodic Table

Alert: only this brand is guranteed to have the real elements embedded- beware that many very cheap fakes are being sold under $100 US. 

The Heritage Periodic Table: Collector’s Edition- a comprehensive collection of the chemical elements that can fit in the hand. Embedded in acrylic are actual samples of 85 of the 118 elements- including pure gasses and reactive alkali metals in glass ampules- and represented by 80 high purity samples (including a Gold nugget and liquid Mercury) and 5 compounds. Radium is included in the form of an antique watch hand, and the bead of Mercury rolls back and forth within its glass container. This spectacular table and collection is the creative work of Tim and Cory Marriott of Engineered Labs Protoshop LLC

Vortex Marble

Some examples of O'Grady's vortex marbles are available on eBay: 
From eBay: BUY NOW Vortex Marbles by Kevin O'Grady 

A number of artists now offer vortex marble art on Etsy 
From Etsy: BUY NOW Vortex Marbles 

Vortex Marble: glass art intersects with the physics of optics in this lampwork art form invented by Kevin O’Grady circa 1994- and this marble bears his signature mark on the back. The clear glass face on these marbles acts as a convex lens giving the illusion that the spiral goes deeper than the diameter of the marble. Different kinds of dichroic glass (doped with thin layers of metals and oxides) is mixed in to the borosilicate marble to create the intense colors.

Ambiguous Object Illusion Mug

From Etsy: BUY NOW Squirkle Mug Ambiguous Object Illusion 

These type of objects were invented by mathematician Kokichi Sugihara, and you can buy his books here: 
From Amazon: BUY NOW Ambiguous Objects by Kokichi Sugihara 
The math and physics are described here in this technical journal article by Prof. Sugihara

Ambiguous Object Illusion Mug: circle or a square? It’s all a matter of perspective and viewing angle. The complex shape allows for both to be perceived and is based on the work of mathematician Kokichi Sugihara of Meiji University in Japan, the inventor of this illusion and art form. 


The Alchemist

Bismuth levitation available here: 
From Etsy- Element 83: BUY NOW Magnetic Levitation Sculptures 
featuring amazing Bismuth Crystals, Jewelry, and Maglev Kinetic Art

Circa 1981, Physicists transmute Bismuth to Gold: Particle accelerators make possible the ancient alchemist’s dream—but at a steep cost 

The Alchemist: cast from diamagnetic Bismuth, a neodymium cube magnet levitates trapped between the hands of the ancient scholar. Diamagnetic substances only have magnetic fields of their own when placed in an external magnetic field from another source- here the cube shaped magnet supplies the field. Diamagnetic fields are pretty weak though so a cylindrical neodymium magnet hangs above the figure and is adjusted to help lift the cube magnet against gravity. Trapped in equilibrium by these magnetic fields, the slightest air currents can send the cube magnet dancing. Although alchemists never succeeded in transmuting lead to gold, in 1981 physicists used the particle accelerator at Berkeley to shoot Carbon nuclei at thin foils of Bismuth- the resulting collisions did produced a tiny amount of Gold atoms! So modern nuclear physics, applied to the element Bismuth, finally accomplished the aspirations of the alchemists. ?Another amazing creation by Ernie McElhannon. 

Stomachion Puzzle

Get this 3-color laser cut acrylic version here:
From Kadon Enterprises: BUY NOW: Stomachion Puzzle

Also a very nice multicolor acyrlic version here:
From Etsy: BUY NOW: Stomachion Puzzle

Learn about the 1998 discovery of the lost writings of Archimedes (and the technology used to recover them) in this TED talk

Ancient Stomachion Puzzle: the oldest known puzzle, discovered in the writings of the great Greek physicist and mathematician Archimedes from some 2200 years ago. The puzzle is a dissection of a square into 14 polygons, where the areas of each piece are integer multiples of each other (a curious way to slice it up). In 2003 Bill Cutler showed that there are 536 district ways to configure these pieces to make the square (five are shown here), ignoring simple rotations and reflections. Swipe to see the most famous solution, attributed to Archimedes himself, that was found in an ancient manuscript discovered only in 1998- before this date historians knew the name of the puzzle, but no one knew what it looked like. Kate Jones, the maker of this particularly aesthetic version, found that when using only three colors for the polygons, there are only 6 solutions where no two pieces of the same color touch (four solutions shown here).

Giant Newton's Cradle

This industrial grade museum quality device available here:
From Etsy: BUY NOW: Giant Newton's Cradle

Regular sized Newton's cradles availabe here:
From Amazon: BUY NOW: Newton's Cradle

Newton's Cradle: industrial model made with galvanized aircraft cable, aircraft aluminum for the frame, and 1.5 inch one-half pound nickel plated chrome steel spheres. (0.23 kg and 3.8cm in diameter each) The classic demonstration that shows the curious behavior due to conservation of both momentum and kinetic energy. Swipe to see comparison to standard version.


Pegasus Automaton

Get this Pegasus, and many other automata (dragons, fish, flying pigs!) from Keith Newstead's Etsy store: 
From Etsy: BUY NOW 
Automata Kinetic Art by Newstead 

Pegasus Automaton: Turn a crank and this metal pterippus takes flight using simple mechanisms in what mechanical engineers call a closed kinematic chain. In his elegantly crafted automata, artist Keith Newstead uses a crank connected to linkages with multiple joints to translate rotational motion to choreographed linear and oscillatory motions.

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: 
From Etsy: BUY NOW 
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. 

Orbit Spinning Top

Get this 3D printed top here:

From Etsy: BUY NOW: Orbit Spinning Top

Orbit Spinning Top: asymmetric in shape but perfectly balanced about the rotation axis, this beautiful stainless steel 3D printed top will spin for a couple minutes. As the top slows down interesting aliasing arises as the angular velocity changes with respect to the frame rate of the camera. 


In-Feed Google

Logarithmic Spiral Gears

Amazing kinetitc creations made here: 
From Etsy: BUY NOW: Spiral Gear Set 3D Printed

Original 3D print files available here: 
From Thingverse: Spiral Gear Set 

Logarithmic Spiral Gears: an extreme example of non-circular gear sets. This set is based on the famous Fibonacci spiral and evokes the cross section of nautilus shell with internal chambers. If one gear of this set is turned at constant speed, the other will turn with an varying speed. A laser cut based on 3D prints of Misha Tikh and the research of Balint et al. 

Eclipse Diamagnatic Sculpture

Click here to visit this amazing Etsy shop Element83 
Get a magnetic levitation sculpture here: 
From Etsy: BUY NOW Diamagnetic Levitation Sculptures 

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. 

 


Impossible Bottle with Arrow

Get an impossibe object from this artist here:

From Etsy: BUY NOW: Impossible Bottles and Objects

Impossible Bottle with Arrow Sculpture Puzzle: a new seemingly impossible object in my collection- Created with clever engineering, this “impossible” syrup bottle contains a wooden arrow that should not fit through its neck. The wood of the arrow is notably one uncut piece, and yet a metal washer is also somehow trapped on the shaft of the arrow. The puzzle aspect is to consider how the bottle was produced (I personally have some theories- but I do not know the secrets of this artist). I can tell you with high certainty that the bottle was never cut or altered in anyway, and it was not somehow formed around the objects. This bottle by Brad Byers is an expertly crated example of the impossible object genre.

3D Print Kaleidocycle 

Get this beautiful 3D Print here:

From Etsy: BUY NOW: Kaleidocycle Fidget

Or print it yourself: Kaleidocycle print files

3D Print Kaleidocycle: this kinetic manipulation fidget toy is comprised of six hinges such that it can twist inwards continuously. Amazingly this item is 3D “printed-in-place”, which means it comes off the printer already assembled with movable links and ensures the color gradient is continuous across the joints.

 

 

Penrose Tiling Puzzle

This puzzle was produced and sold in the 1990s. 
The individual tiles can be found on eBay (and sometimes the whole puzzle): 

From eBay: Search NOW Penrose Pentaplex Puzzle 
Wikipedia has the details on Penrose Tilings and their inventor Sir Roger Penrose (Recently won Nobel Prize!) 
A nice basic version of Penrose Tilings is available here: 
From Etsy: BUY NOW Penrose Tiles 

Penrose Tiling Puzzle: a challenging puzzle with pieces that come in only two shapes. Sir Roger Penrose- who just yesterday won the Nobel prize in physics for his contributions to General Relativity- also discovered tessellations (tilings) that are aperiodic even though the two tile types are regularly shaped polygons. If one tries to shift a part of a Penrose tiling, the shifted part will not align or match up with any other part of the same tiling- all the way out to infinity! This puzzle, entitled “Perplexing Poultry”, created and sold by Penrose himself, uses polygons modified into crazy looking birds such that the tiles can only connect in specific ways to ensure the non-repetitive nature of the Penrose tiling structure. Shown here is one way these two tile types will fill the plane.