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The FluoroSphere

The kit includes the UV LED base, elegant glass sphere, and enough fluorescent gel for many repeat lights shows. 

From PyroFarms: BUY NOW: FluoroSphere

From Amazon: BUY NOW: FluoroSphere

The FluoroSphere: intricate and dynamic lights shows are produced within an elegant glass sphere as fluorescent dyes in mineral oil slowly mix into room temperature water. Ultraviolet LEDs (in the base on which the sphere rests) make the dyes glow brightly and reveal the initial nondiffusive mixing structure which includes the phenomena of drops, plumes, and other features of Rayleigh-Taylor instabilities. Shown here, slightly sped up, is the first 8 minutes or so of the process which takes up to half an hour to mix evenly. The green light is characteristic of the famous fluorescein dye.

 

Diffractive Optical Element

Amazing application of high resolution far field holograms. The only available source I know of for projection holograms at this high resolution is this supplier of industrial samples 
From MaterialSampleShop.com: Diffractive Optical Element Sample 

Need a laser pointer? Incredibly, you can get 3 (one of each color) for under $20 (including S&H): 
From Amazon: BUY NOW Red+Green+Purple Laser Pointer

Diffractive Optical Element: images produced by constructive and deconstructive interference of coherent laser light. The patches of microstructure on the surface of this transparent plastic are far field holograms- transmission holograms, but with the image at infinity. Side by side images from two different laser wavelengths (red 635 nm, green 520 nm) shows clearly the red image is larger than the green since diffraction angle is proportional the wavelength. So much physics here!

Cosmic Eye Rheoscopic Display

A KickStarter campaign for resonably priced interactive art: 

From KS: Pledge NOW: Cosmic Eye

Cosmic Eye Rheoscopic Device: visualizing the invisible- where suspended microscopic flat crystals reflect light and allow visualization of the fluid's motion. This rheoscopic fluid is special in that the suspended microscopic particles are slightly ferromagnetic and will align with any external magnetic field that is brought near the device. A small magnet within allows interesting interactions as well. From creator and artist Robert Spillner.

 


Ernest Borel Watch

These vintage watches are not too hard to find: 

From Etsy: BUY NOW: Borel Cocktail Watches

From eBay: BUY NOW: Borel Cocktail Watches

Moire Kinetic Watch: this beautiful timepiece is an Ernest Borel Cocktail pendant watch made in 1958 featuring the trademark rotating disk (instead of a second hand) which creates a kinetic radiant Moiré pattern. This vintage 17 jewel Swiss watch is old school- powered by a spring that must be wound once a day (elastic potential energy to kinetic). 

Tea-Light Floating Engine

Get one from my friends at Grand Illusions! 
From Grand Illusions Ltd.: BUY NOW Floating Steam Engine 

Engines of similar design are used in pop-pop boats 

Tea-Light Floating Engine: a candle powered super simple steam engine. The engine is just a coil of copper tubing filled with water. Steam builds up pushing water out with an explosive jet- which then results in a vacuum in the coil which pulls more water in to repeat the process. The water expulsion is in the form of jet directed out the end of the tube whereas the refill comes back in to the tube from a larger range of angles- so on balance the engine moves opposite to the direction of the jets. 

Nixie Tube Clock V2

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 V2: 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-12A where the numbers are stacked so the front symbols obscure each lighted cathode minimally: from back to front 162750483.


Glow Trace Chaotic Pendulum Kit

Get this super nice, affordable, and fun to assemble kit here:
From KiwiCo: BUY NOW: Glow Pendulum Kit

Get amazing quatilty science kits delievered to your home- this glow pendulum is part of the Tinker Crate subscription. 
From KiwiCo: LEARN MORE: Tinker Crate Subscription

Glow Trace Chaotic Pendulum: this fun and amazing DIY kit features a UV diode to trace the intricate path of this double pendulum system on to a phosphorescent screen, revealing the physics of chaotic motion. It’s amazing that such complex motion can arise from a simple assembly of two pendulums, one attached to the end of the other. Chaotic motion, such as that observed here, is characterized by extreme sensitivity to initial starting conditions, tiny differences in how the system is released leads to dramatically different outcomes each time. 

 

Soma and Rhoma Puzzles

The Rhoma Cube is a vintage item and can sometimes be found on eBay:

From eBay: Search NOW: Rhoma and Soma Puzzles

Soma Cubes are available in a wide viariety: 

From Amazon: BUY NOW: Soma Cube

From Etsy: BUY NOW: Soma Cube

SOMA and RHOMA Puzzles: Replace every cube in the Soma puzzle with a rhombohedron to create the Rhoma puzzle- where the seven slanted pieces now make a larger rhombohedron. Here I’ve painted the corresponding Soma and Rhoma pieces to match on these sister puzzles that share identical edge lengths. While there are 240 ways to make the larger cube from the 7 Soma pieces, there is only one solution for the 7 Rhoma pieces. The original Soma Cube is a math toy has an interesting connection to physics- invented by Danish scientist and artist Piet Hein who claimed that this puzzle idea came to him as he was listening to a lecture on Quantum Mechanics by Werner Heisenberg in 1933. The seven pieces are all the ways 3 or 4 cubes can be joined, such that each piece has at least one inside corner.

High Tech Rain Stick

Available here: 
From Amazon: BUY NOW 
Acrylic Rain Stick 

From eBay: BUY NOW 
Acrylic Rain Stick 

Get the spectrum analysis app here: SpectrumView - Oxford Wave Research Ltd.

Wikipedia has nice articles about white noise and other colors of noise described with the math of spectrum analysis 

High Tech Rain Stick: white noise- the sound of two thousand metal spheres falling and bouncing through a plastic labyrinth creates a power spectrum of sound waves with all frequencies at equal intensity, creating the shhh sound we often encounter from many random processes. Part of the cascade slowed to 240 FPS midway through video.


Peridotite Xenoliths

samples available here: 
From eBay: BUY NOW Mantle Xenolith Peridotite sample

Peridotite Xenoliths: here before you are chunks of Earth's mantle material from 50 kilometers or deeper below the surface, far below the deepest hole ever drilled at 12.3 km (a great effort which didn't even break through to the mantle). However, green peridotite crystals of olivine and pyroxenes are sometimes brought to the surface by viscous lava in the form of xenoliths- inclusions in the volcanic basalt as seen in this sample. This piece was collected from Peridot Mesa in the San Carlos Volcanic Field of AZ. Amazing sample of the inaccessible Earth's interior.

Magnetic Suspension Sculpture

DM @mi.mo.vi on Instagram to obtain a sculpture like this one. 

See other related art physics in my collection: Magnetic Suspension Fun

Magnetic Suspension Sculpture: Steel hoops are suspended by a neodymium super magnet and held down to the base by a thin cord in this beautiful kinetic sculpture by artist @mi.mo.vi The red and blue steel hoops, being ferromagnetic, both become a north pole in the presence of the south pole end of the gold colored magnet, so they are attracted to the gold magnet, but repel each other. The invisible magnetic connection between the rings allows for interesting and chaotic motion as the kinetic energy is transferred back and forth. 

Scale Model of Pluto–Charon Binary System

Get a beautifully detailed Pluto + Charon here: 
From Shapeways: BUY NOW Pluto Charon Set 

Scale Model of Pluto–Charon Binary System: shown here with each in orbit around their common center of mass. The orbit distance of Pluto’s primary moon Charon is only 8.2 Pluto diameters away (very close!), and because Charon is 1/2 the size (and 1/8 the mass) of its parent planet, their common center of mass is far outside Pluto’s surface. (For comparison our Moon is 30 Earth diameters away.) This model also correctly shows how both Pluto and Charon are in tidal lock with each other- one side of Pluto always faces one side of Charon, so the orbit period of Charon is equal to one Pluto rotation (6.4 Earth days). I constructed this model using a 3D printed Pluto and Charon set made by George Ioannidis (based on image data from the New Horizons spacecraft) Scale: Earth diameter = 12 inches. 


Polarized Light Cell Kaleidoscope

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

Similar Kaleidoscopes available here:

From Amazon: BUY NOW Fluid Flow Kaleidoscope 
From eBay: Fluid Flow Kaleidoscope

See more kaleidoscopes in my collection: Kaleidoscopes

Polarized Light Cell Kaleidoscope: the amazing colors you see from the object cell of this 3 mirror kaleidoscope are generated by manipulating the polarization of light- the object in the clear wand is a strip of clear cellophane in oil which has the property of optical rotation. These property allows for an incredible range of color formation when placed between two linear polarization filters (swipe for demonstration). A creation of kaleidoscope artist Ron Kuhns.

Lampe Kino: Polarizing Art

The amazing art of Anne-Lise King available here:

From Etsy: BUY NOW: Kino Lamp Polarizing Art Lights

Lampe Kino: Art from from the manipulation of polarized light. These videos showcase two designs by artist Anne-Lise King, and each design can itself be displayed in numerous ways depending on the orientation of the polarizing filter and the layering of plastic imaging sheets. Light has an orientation, denoted as polarization, and a polarizing filter can be used to block certain orientations. The colors produced here come from how the molecular structure of plastics can rotate the polarization of light that passes through- light corresponding to yellows and greens gets rotated in plastic in proportion to their frequency, red and blue frequencies only a small amount. The images here are constructed with different layers of plastic to rotate the light by differing amounts. Polarizing filters are then added to allow only certain frequencies (colors) of light through.


Impossible Frame in Bottle

Each construced by hand, each a work of art-  get a personalized bottle here:

From The Bottleologist: BUY NOW: Impossible Bottle with Frame

Impossible Frame in Bottle: the newest seemingly impossible object in my collection from craftsman/artist Grant Wicks AKA the Bottleologist. A framed photo complete with all hardware somehow assembled within a Fannys Bay Whisky bottle- a uniquely square bottle. More- the photo is a recursive Droste Effect image of the bottle itself. 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 frame. 

Fruit Themed Tippe-Top

This quality wood toy available here: 
BUY NOW Hape Spinning Top 

More flip tops here:
STEMcell Science Shop: BUY NOW Tippe-Tops 

Fruit Themed Tippe-Top: spinning things often have surprising physics! This colorful top by Hape not only flips over when spun, it also exhibits interesting behavior due to instabilities as it slows down- serious break dance moves! Friction with the mirror provides a torque that acts on the existing angular momentum of the top to flip it over.

 

Sprial Oil Drop Timer

Get one here:

From Amazon: BUY NOW: Oil Drop Timers

Spiral Oil Drop Timer: when this drop timer achieves its steady state the drops form with amazing regularity in terms of both the size of the drop and the spacing between drops. The physics of immiscible liquids, surface tension, viscosity, and gravity combine to produce these interesting patterns.