Best Sellers

The Galton Board

Available here: 
From Amazon: BUY NOW 
Galton Board 

The Galton Board: 3000 steel balls fall through 12 levels of branching paths and always end up matching a bell curve distribution. Each ball has a 50/50 chance of following each branch such that the balls are distributed at the bottom by the mathematical binomial distribution. One of my favorite finds of 2018! An elegantly designed modern version of the Galton Box invented by Sir Francis Galton(1894) to demonstrate the Central Limit Theorem - showing how random processes gather around the mean. In addition the number of balls in each bin can be predicted by Pascal's triangle (printed on the face over the pegs).

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. 

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Butterfly Mendocino Motor

Get this elegant motor here:

From Etsy: BUY NOW: Butterfly Medocino Motor

Butterfly Mendocino Motor: the simplest (and very elegant) version of this motor with only two photovoltaic cells mounted with care to ensure precision balance. This motor will spin quietly to high RPMs on any sunlit windowsill. In this model made by Semyon Nazarov of SolarWindRU, each of the two photovoltaic solar cells is connected to a coil of copper wire under the opposing solar cell. When the rotor is lit from above the top solar cell provides electric current to the coil in the bottom position which becomes a temporary electromagnet that pushes against the permanent magnet in the base propelling the rotor to rotate. As the rotor turns, the coil that moves into the bottom position is likewise energized by the solar cell currently at the top- one can say the light commutates this motor. 2D magnetic levitation is provided by permanent magnets where an acrylic plate constrains the third dimension, and makes for a nice bearing surface for minimal friction. Invented in the 1960s by Daryl Chapin of Bell Labs and popularized by Larry Springs of Mendocino CA

Balancing Bottles

Get one here: 
From Amazon: BUY NOW Balance Bottle Dock 

Balancing Bottles: serve with physics style this season displaying this design where the combined center of mass of the wine rack and two bottles is directly above the base of the wood rack- because sometimes it takes two bottles of wine to bring life into balance! ?? 

Star Wars Specular Hologram on Vinyl

Get the soundtrack by John Williams (which comes with two wonderful examples of Tristan Duke's holography artwork) here: 
From Amazon: BUY NOW The Force Awakens Soundtrack + Holograms 

Click on this link for another amazing work by Mr. Duke... 

Star Wars Specular Hologram on Vinyl: A repost of my favorite Star Wars themed physics in celebration of The Last Jedi in theaters today—the two LP soundtrack from The Force Awakens featuring two amazing "scratch holograms" of a Tie fighter and the Millennium Falcon- the video barely captures the fullness of the 3D effect, in person the spaceships seem to hover above the surface of the record. These holograms were hand etched on the metal masters by artist Tristan Duke of Infinity Light Science. The etched grooves reflect a point source of light as sharp glints and the groves are arranged so that each eye sees a slightly different pattern such that, via stereopsis, the shiny points appear to float above or below the surface.


Levitron Revolution

Get the levitating/rotating platform here: 
From Amazon: BUY NOW Levitron Revolution 
From eBay: BUY NOW Levitron Maglev Platform 

Versions of the floating rings illusion can be found at the Exploratorium, at the Carnegie Science Center
and is also famously featured in the 1981 Superman movie: 
 

Levitron Revolution: well engineered control system uses an adjustable electromagnet and and a Hall effect sensor to levitate an 8cm diameter neodymium magnet platform 5 cm in mid-air. The feedback loop allows fine tuning of the magnetic field to exactly balance the pull of gravity. The platform also rotates, perfect for this floating rings illusion sculpture I constructed. 

Tesla Coil

For the price, this is the best one on the market I think and beautiful to look at in copper- the music function does not do much, but it is a great little Tesla coil and it comes with three accessories for the top. Please be sure to employ all appropriate safety precautions when utilizing any electrical circuity! 

From engineDIY: BUY NOW: Mini Tesla Coil

Tesla Coil: miniature low current version of the famous air core double-tuned resonate transformer invented by Nikola Tesla in 1891. The thick copper of the primary coil is set into three windings around the many windings of the tall secondary coil. This one uses a modern transistor circuit to excite the radio frequency oscillations that produce a voltage in excess of 50kV in the form of pulses that cycle about 100k times a second. This version is fed by a 24V DC power supply and is fairly safe due to a low current (mA)- but the circuitry does get hot and demands a huge heat sink with fan (the metal base can burn skin when operating). The coils comes with attachments- the spike produces a purple corona discharge as the voltage exceeds the breakdown voltage of air with current flowing into the air or arcing over to a grounded piece of metal. The corona discharge imparts momenta, and here the ends of a bent wire are set into rotation from the slight push of the escaping electrons. Swipe to see the ejected electron stream propel the end of a thin wire into a final state circular orbit. The more interesting behavior occurs during the initial transient orbits which seem to be hypotrochoid type curves beautifully captured here using the Slow Shutter app. 

Well Balanced Cabernet

From Etsy: BUY NOW Balance Wine Racks 

Wood and stainless steel versions: 
From Amazon: BUY NOW Balance Wine Racks 

A nice acrylic version available here: 
From Amazon: BUY NOW 
Balance Wine Rack

Well Balanced Cabernet: the center of mass of the rack/wine-bottle system is directly over the base providing unstable equilibrium for this balancing act. A fine wine rack for one bottle except during a 5+ earthquake, or if you own a cat. The oak wood for this wine rack was repurposed from the stave of a used wine barrel. 


Nixie Tubes and 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: 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. 

Disk Tesla Coil

Create amazing Telsa coil lighning at an affordable price! Please be sure to employ all appropriate safety precautions when utilizing any electrical circuity.  

From engineDIY: BUY NOW: Disk Tesla Coil

Click here for similar amazing devices from engineDIY

Disk Tesla Coil: incredible coronal brush discharges form intricate miniature lightning in this variation of the famous air core double-tuned resonate transformer invented by Nikola Tesla in 1891. In this novel design the coil is created using modern printed circuit board (PCB) technology producing a spiral of many conductive windings, so thin and close together it looks a bit like a gold phonograph record. The 10 cm long sparks are made possible by a very high voltage, but also a very fast discharge of a capacitor, and each lightning flash is accompanied by a dramatic popping sound characteristic of capacitor discharge (shown up close in 240fps slow motion). Powered by a 24V DC supply, this unit is fairly safe due to a low current (mA)- the discharge feels like a light tickle (but don’t touch the electrode- it gets hot). 


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.

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Aquarius Fountain Lamp

These fountains are individually made by the artist hence they are priced as art reflecting the labor involved: 
From Etsy store of Stephen Co : BUY NOW 
Aquarius Fountain Lamp

Aquarius Fountain Lamp: an oscillating stream of water is illuminated by strobe lights to reveal underlying structures and forms typically hidden from our vision. With the help of programmable micro-controllers, strips of addressable RBG LEDs are made to flash in sequences that make the water stream appear to move upwards, change colors, and split into multiple braided streams. Art meets physics and clever technology in this wonderful creation by computer engineer Stephen Co. With sincere appreciation to Stephen @northerncircuits for sending me one of his hand crafted high tech fountains.


Aqua Drop Puzzle

Three models/colors to choose from: 
From Amazon: BUY NOW Aqua Drop Puzzles 

From eBay: BUY NOW: Aqua Drop Puzzle

Aqua Drop Puzzle: a superhydrophobic coating allows this dexterity puzzle to use a drop of water as the "pinball". The white surface is a silica nano-coating that makes water roll off- a condition sometimes referred to as the Lotus effect because leaves of the Lotus plant have this property. 

Jupiter Globe by Mova

Available for all the planets and several versions of Earth: 
From Amazon: BUY NOW Mova Globes: all types 
From Amazon: BUY NOW Mova Globes: Jupiter 

From eBay: BUY NOW Mova Globes: all types 

From movaglobes.com: BUY NOW Mova Globe: Jupiter

Jupiter Globe by Mova: rotating counterweighted globe sealed within a clear liquid filled acrylic sphere. The rotation is powered by light that shines through the semi-transparent Jupiter globe on to solar cells within the globe which drive a motor. But what does the motor push against to maintain the rotation? Believe it or not it uses magnets to push against the Earth's magnetic field like a compass needle. Wonderful physics of all kinds in the design of this clever device. 

Bismuth Maglev Rod

Get this amazing and affordable science sculptue here:

From Etsy: BUY NOW: Bismuth Maglev Rod

Click here to see other diamagnetic toys and scuptures 

Bismuth Maglev Rod: Small magnets are trapped, suspended and floating, within the notch of a rod cast from the diamagnetic metal bismuth. Diamagnetic substances only have magnetic fields of their own when placed in an external magnetic field from another source- here the small floating magnet supplies the external field. Diamagnetic fields are pretty weak though, so a powerful neodymium magnet sits above the gap on the top of the rod, and its height is adjusted to help lift the small magnet against gravity. Another amazing creation by Ernie McElhannon of Element83.