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Physics Toy Store 08



Micro-Mirror Interactive Art

The love/hate memo pad by LUYCHO is available here:

From Grand Illusions Ltd.: LUYCHO love/hate Memo



Cartesian Devil

These seem to be mostly made in Germany- get one here

From eBay: Cartesian Devil

See the links following the next video for other versions of the famous Cartesian diver physics toy.



Cartesian Diver

Cartesian Diver: increasing pressure on the water compresses the air bubble in the small plastic vial (here in the shape of an octopus' head) filling it further with water and making the diver sink. Pascal's principle states that any change in pressure on an enclosed fluid (such as squeezing the plastic bottle) is transmitted evenly to every part of the fluid- the physics of hydraulic brakes! The physics here is great- but the biology is questionable: it's not clear why an octopus would need mask and snorkel! (It's tentacles look cool though...) ➡️ Follow the link in my profile for info on where to get this and many more of the items featured here on the @physicsfun stream. #hydraulics #physics #physicstoy #fluidstatics #ReneDescartes #Archimedesprinciple #pascalslaw #BlaisePascal #buoyancy #science #scienceisawesome

A video posted by physicsfun (@physicsfun) on


This little octopus diver can be found here

From Amazon: Octopus Cartesian Diver

...and a jellyfish version too

From Amazon: Jellyfish Cartesian Diver

Here is a fun DIY kit


From Educational Innovations: Cartesian Diver Kit



Poly Density Puzzle

Poly Density Puzzle: a science brain teaser- white beads and blue beads "float" oddly separated beneath the surface of a clear liquid. If the contents are mixed by shaking the container, the white beads gather at the top and the blue sink to bottom! Adding to the mystery; after about 30 seconds the two layers of beads will have slowly moved back to the middle. What is your guess as to the physics behind this behavior? ➡️ Follow the link in my profile for info on where to get this puzzle (and the physics that explains it) along with many other curiosities featured on @physicsfun #physicstoy #physicspuzzle #density #densitycolumn #immiscible #immiscibleliquids #bouyancy #archimedes #archimedesprinciple #saltingout #physics #science #scienceisawesome #polydensity

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Get the kit and full explanation and instructions here:


From Educational Innovations: Poly Density Kit



Pet Tornado

The motorized version of the "Pet Tornado" seems to be out of production. You can still get the regular version:

From Amazon: Pet Tornado

Similar battery operated vortex devices are still available-- like this one

From Amazon: "Tornado" Lab



Polaroid Glare Reduction

Polaroid Glare Reduction: this retail display illustrates the amazing property of light waves and Polaroid sunglasses. In this Oakley display a white surface is aligned by design so that the light from the white surface is reflected off an image of a surfer such that the glare is so extreme the photo is obscured- however all the glare light can be almost entirely eliminated with a polarizing filter oriented correctly. Light waves that are reflected leave the surface with a high percentage of the waves polarized parallel to the surface- if one wears sunglasses that have vertically oriented polarizing filters any reflected light off horizontal surfaces is mostly blocked. At a particular angle for a given surface material (called Brewster's angle) the reflected waves are 100% polarized. ➡️ Follow the link in my profile for info on where to get many of the items featured here on @physicsfun #polarizer #polarizedlight #light #optics #physics #physicstoy #polaroid #glare #BrewstersAngle #FresnelsLaw #glarereduction #polaroidsunglasses #electromagnetism #science #refraction #reflection #linearpolarization #scienceisawesome

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I found this Oakley display showing this amazing property of light polarization on eBay. This kit from Educational Innovations features many of the physics toys featured on @physicsfun, including a few sheets of polarizing film, and can be used to recreate this demonstration:



From Educational Innovations: Polarizing Film Kit



Curves of Constant Width

Curves of Constant Width: these convex shapes will roll because like a circle they have the same diameter from one side to the other no matter their orientation. Here are two famous examples: the Reuleaux triangle (found in rotary engines) and a Reuleaux pentagon- note how the two straightedge rulers remain parallel as the shapes rotate between them, just as one would expect circles to behave! These physical representations of the special curves seen here are produced by Maths Gear, owned and operated by Matt Parker and Steve Mould out of Great Britain. ➡️ Follow the link in my profile for info on where to get these and many other curiosities featured here on @physicsfun @festivalofthespokennerd #maths #mathsgear #math #mathtoy #mathstoy #coolmath #shapeofconstantwidth #reuleaux #reuleauxtriangle #physics #physicstoy #geometry #orbiform #convex #polygon #wankleengine #science #scienceisawesome

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Available here

from Maths Gear: Shapes of Constant Width Set



Chain Fountain

Chain Fountain: as the chain flows out of the glass under the pull of gravity the beads don't simply roll over the edge but instead arc up upward like a fountain. As each link is pulled and tilted upward the adjacent link is tilted downward and pressed into the pile- by Newton's 3rd law the pile presses back pushing each bead upward into the air. A segment of the video is shown in slow motion where the fountain is at maximum height. This phenomena was recently discovered by Steve Mould (more to be seen at his YouTube channel) and the details of the physics is described in the Proceedings of the Royal Society by Biggins & Warner (2014). ➡️ Follow the link in my profile for info on where to get this and many other curiosities featured here on @physicsfun #chain #chainfountain #physics #physicstoy #gravity #siphon #polymer #newton #newtonsthirdlaw #force #flow #fluid #chainreaction #science #scienceisawesome #MouldEffect @festivalofthespokennerd

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The best effect (highest fountain) is obtained by using #10 size chain with a bead diameter of 3/16" (4.8mm). This spool has 100 feet of chain, the same length as used in the video.

From Amazon: #10 ball chain




Kalliroscope

Kalliroscope: rheoscopic fluid reveals the convection currents generated by the heat emanating from fingertips. Invented and produced by Paul Matisse in the 1970s, suspended microscopic flat crystals of guanine reflect light and allow visualization of the fluid's motion. This rheoscopic fluid is special in that the guanine crystals are the same density as the tetrachloroethylene liquid so the crystals never settle to the bottom making the fluid reactive to showing the slightest movement. ➡️ Follow the link in my profile for more info on where to get many of the curiosities featured here on @physicsfun #kalliroscope #matisse #kineticart #rheoscopicfluid #rheoscopic #Matisse #convection #kineticart #fluiddynamics #1970 #1970s #Calder #kineticsclupture #kalliroscope #physics #physicstoy #art #psychedelic #lavalamp #science #scienceisawesome #fluiddynamics #rheoscopic #physics #physicstoy #convection #convectioncurrent #science #perchloroethylene #tetrachloroethylene #1970 #lavalamp

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Follow the links after the next video for more info.



Kalliroscope with heating element stand

Kalliroscope with heating element stand: visualizing convection currents. Invented and produced by Paul Matisse in the 1970s, suspended microscopic flat crystals of guanine reflect light and allow visualization of the fluid's motion. This rheoscopic fluid is special in that the guanine crystals are the same density as the tetrachloroethylene liquid so the crystals never settle to the bottom making the fluid reactive to showing the slightest movement. ➡️ Follow the link in my profile for more info on where to get many of the curiosities featured here on @physicsfun #rheoscopicfluid #rheoscopic #Matisse #convection #kineticart #fluiddynamics #1970 #1970s #Calder #kineticsclupture #kalliroscope #physics #physicstoy #art #psychedelic #lavalamp #science #scienceisawesome

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Invented by artist and inventor Paul Matisse. Learn more about the Kalliroscope (and his other works).

The particular fluid developed by Matisse is no longer available (Kalliroscopes are rarely available even of ebay). Here is a similar product that enables similar exploration of the intricacies of fluid flow:


From Educational Innovations: Rheoscopic Fluid



Magnetic Cannon

Gauss Gun: acceleration of steel balls through magnetic potential energy and cascading collisions. Four neodymium magnets provide the potential energy that is converted into significant kinetic energy of the end steel ball. The initial configuration has two steel balls on one side of each magnet- an incoming ball on the opposite side accelerates and impacts each magnet in turn sending each loosely connected second ball off with greater speed. ➡️ Follow the link in my profile for info on where to get this and many other physics toys featured here on @physicsfun #gaussgun #magnet #magnetic #electromagnetism #momentum #conservationofmomentum #impulse #magneticfield #cascade #potentialenergy #physics #physicstoy #collisions #science #scienceisawesome

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Get one here:

From Amazon: Magnetic Cannon

Or here:

From eBay: Magnetic Cannon



Magic Window by Wham-O

These vintage items are often available on eBay

From eBay: Magic Window



Double Pendulum

Double Pendulum: chaotic motion from a simple assembly of two physical pendulums (one attached to the end of the other) with the energy of the system moving frenetically back and forth between the potential energy of gravity to the kinetic energy of motion. Chaotic motion is characterized by extreme sensitivity to initial starting conditions, tiny differences in how the system is released leads to dramatically different outcomes each time. This double pendulum was made by Doug Cvelbar (owner of minicastings.com) where bearings were used at the pivot points to minimize fiction so that the energy takes many minutes to dissipate. ➡️ Follow the link in my profile for info on where to get many of the items featured on @physicsfun #physicstoy #chaos #chaoticmotion #chaostheory #kineticart #pendulum #doublependulum #physicalpendulum #strangeattractor #science #scienceisawesome

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This pendulum was created by Doug Cvelbar, maker of amazing model engines at minicastings.com
Follow the links after the next two videos for similar, and affordable, versions of chaotic pendulums.



Stick Man Chaotic Pendulum

These stick man chaotic pendulums are no longer in production. However the product below is very similar and actually offers a wider range of configurations. I will post a video on this version in the future!

From Amazon: Chaos Machine




Chaotic Kinetic Sculpture

Amazon carries two versions of this a small (like the one I posted) and a larger size:

From Amazon: Jupiter Kinetic Sculpture



Stainless Steel Rattleback

Stainless Steel Rattleback: prefers to spin counter clockwise. If spun clockwise, a complicated combination of friction, precession, and instability induced vibrations transforms the rotational energy into into rattling (energy of oscillations) and then into rotational energy in the opposite direction! This behavior is related to the asymmetric shape of the bottom of this kind of rattleback, it's somewhat propeller shaped with an "S" curve along the bottom ridge. ➡️ Follow the link in my profile for info on where to get a rattleback and some further details on the physics. #rattleback #celt #physics #physicstoy #rotation #instability #kineticenergy #torque #friction #angularmomentum #precession #science #scienceisawesome #kineticart

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This metal version is available here:

From KJ Beckett: Metal Rattleback

See the links below for inexpensive rattlebacks that work well.



Acrylic Rattleback

Acrylic Rattleback: prefers to spin counter clockwise. If spun clockwise, a complicated combination of friction, precession, and instability induced vibrations transforms the rotational energy into into rattling (energy of oscillations) and then into rotational energy in the opposite direction! This behavior is related to the asymmetric shape of the bottom of this kind of rattleback, it's somewhat propeller shaped with an "S" curve along the bottom ridge. ➡️ Follow the link in my profile for info on where to get a rattleback and some further details on the physics. #rattleback #celt #physics #physicstoy #rotation #instability #kineticenergy #torque #friction #angularmomentum #precession #science #scienceisawesome #kineticart

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These acrylic versions work great and are inexpensive:


From Educational Innovations: Rattlebacks

For further details on the curious physics and behavior this amazing physics toy, please see my short blog post on the rattleback.



Aeroflux Argon Glow Bulb

A few options for these Aerolux type bulbs:

From Amazon: Novelty Bulbs


From eBay: Aerolux Bulbs (note: both inexpensive new ones and expensive antiques found here)



Balancing Bottles

Available here:

From Amazon: Bottle Dock



Well Balanced Cabernet

Many versions of this device are available.

From Amazon: Balance Wine Rack


From Etsy: Balance Wine Rack



Trichroic Bean Splitter

Factory seconds are available and inexpensive

From eBay: RGB Prism



Oil Drop Cascade

Available here

From Amazon: Oil Drop Cascade



Feel Flux Magnetic Field




MagneView Film

Available from


From Educational Innovations: Magnetic Field Viewing Film


For my followers in Europe, here is a local source:

From MaterialSampleShop.com: Magnetic Field Viewing Film



Feel Flux Loop

Feel Flux Loop: original (copper) and the "Skill Flux" version (aluminum)- toys that use Lenz's Law to manipulate a very strong neodymium magnet (see my last post for details on this physics). The magnet falls a bit faster through the aluminum even though the walls are thicker- Al is only about 60% as conductive as Cu- so it takes more material to induce the needed magnetic field using aluminum. Interestingly the Al tube is about half the mass of the Cu one, even though it is larger in volume. ➡️ Follow the link in my profile for details on where to get this and many other items featured on @physicsfun #feelflux #skillflux #lenzslaw #neodymium #magnets #magneticfield #eddycurrents #induction #Faraday #electromagnetism #electromagnet #aluminum #conductivity #copper #physics #physicstoy #science #scienceisawesome

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Feel Flux

Feel Flux: a toy utilizing Lenz's Law- a very strong neodymium magnet falls slowly down a copper tube as though passing through a viscous liquid. Moving magnetic fields produce electric currents in a conductor (such as copper). These currents then produce magnetic fields that have the opposite polarity to the initial field. So a falling magnet makes the copper tube briefly into an electromagnet that repels the magnet. @feelflux was initiated by crowd sourcing at Indiegogo but is now available from their store. ➡️ Follow the link in my profile for info on where to buy this and many other items featured here on @physicsfun #lenzslaw #neodymium #magnets #magneticfield #eddycurrents #induction #electromagnetism #electromagnet #flux #magneticflux #copper #physics #physicstoy #science #scienceisawesome

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Available here

From FeelFlux.com: Feel Flux toy



Rattlesnake Eggs

Sold here!


From Educational Innovations: Buzzing Magnets



Hydro-Gyro

Sadly, this amazing toy is no longer in production. For those that are curious I did find the patent online:

From Google Patents: Hydro Gyroscope



Ambiguous Cylinder Illusion

See the original video by Kokichi Sugihara: Ambiguous Cylinder Illusion

Devin Montes offers this and other variations of the illusion from his Shapeways printing shop

From Shapeways: Ambiguous Cylinders



Fiber Optic Flower Lamp

The vintage lamp in the video was found at a thrift store. It turns out that many vintage lamps like this one are available on eBay

From eBay: Vintage Fiber Optic Lamps



High Voltage Wood Burn

High Voltage Wood Burn: my attempt to make a Lichtenberg fractal by applying a high voltage electrical current across a piece of wood. Inspired by the fractal in my previous post, I realized I had all the equipment needed in my garage including a neon sign high voltage transformer. Here is the burning process using 7500 V at 20 mA. I turned the power off right before the two sides connected to get the fern-like look. The wood is slightly wetted with baking soda dissolved in tap water. ‼️WARNING high voltage can kill- do not use a transformer like this unless you are fully trained in electrical high voltage safety. ➡️ Follow the link in my profile for info on how to obtain a fractal like this and many other physics toys. #Litchenberg #frozenlightning #fractal #electron #physics #physicstoy #mathtoy #mathstoy #electromagnetism #science #lightning #highvoltage #scienceisawesome #electricity #arc #electricarc #fractalart #beamtree #fractalsculpture

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Follow the link after the video below for a nice selection of fractal art produced this way.



High Voltage Fractal in Wood

High Voltage Fractal in Wood: a Lichtenberg fractal created by a high voltage electrical current flow across a piece of wood. Since wood is an insulator a light coating of conducting water (for instance a solution of baking soda or salt) is first applied to the surface. Metal electrodes are then attached at each end of the wood piece and a dangerous source of high voltage is applied (such as a microwave oven transformer or neon light transformer). This beautiful piece was crafted by Matt Dombroski @EngravedGrain. ➡️Follow the link in my profile for info on where to get this and many other physics toys. #Litchenberg #frozenlightning #fractal #electron #physics #physicstoy #mathtoy #mathstoy #electromagnetism #science #lightning #highvoltage #scienceisawesome #electricity #arc #electricarc #fractalart #beamtree #fractalsculpture

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Matt Dombrowski makes and sells these fractals in his Etsy store:

From Esty: EngravedGrain Shop



Space Fidget

This vintage toy is currently available on eBay:

From eBay: Space Fidget


Rayleigh Scattering in Opalite

Many inexpensive samples of opalite are available here:

From Amazon: Opalite



Magnetic Field Viewer

Get one here

From Amazon: Magnetic Demonstration Set



Toroflux

Here is an affordable version of this device:


From Educational Innovations: Cosmic Coil

Why does it look like a bubble when moving fast? Wikipedia has the details: when the object exceeds a certain speed the flicker fusion frequency of our vision produces the bubble illusion.

The physics of the toroflux is wonderfully illustrated and explained in this article by Daniel Walsh.



Jewelarama "Scientific Jewelry"

Edmund Refraction Jewelry: not gem stones but instead machine polished convex metal disks manufactured in the 1960s by Edmund Scientific Co. Marketed as "scientific jewelry" this broach is labeled with the trademark Jewelarama on the back. The rainbow shimmer is the result of diffraction and interference from the concentric circular micro-grooves from the polishing, much like that seen on compact disks - but this line of Jewelry was discontinued more than 20 years before CDs were invented! Follow the link in my profile for info on where to get this vintage nerd jewelry and many other physics toys. #scientific #diffraction #interference #convexlens #throwback #collectable #collectablejewelry #edmundscientific #jewelarama #physics #physicstoy #physicsmeetsart #broach #optics #rainbow #science #scienceisawesome

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A large selection of this vintage jewelry is available on ebay (and fairly inexpensive too).

From eBay: Jewelarama Vintage Jewelry



Ferrofluid

Here are some great ferrofluid displays and science kits for teachers


From Educational Innovations: Ferrofluid Kits

Nice display cells can be found here:

From Amazon: Ferrofluid Display



Glass Spinning Top

Get one here:

From Etsy: DPglass



Borromean Rings in Glass

Check out Drew Phifer's art and glass work here:

From Etsy: DPglass

Wikipedia has the details on the curious properties of Borromean Rings.



Click here for more:

Physics Toys,



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