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Physics Toy Store 09


Designer Kaleidoscope

A work of art by Carol Paretti. Sometimes deals can be found of eBay for designer kaleidoscopes:

From eBay: BUY NOW Designer Kaleidoscopes

More affordable, but still very nice, kaleidoscopes like this one (see links below video):

UV Fluid Flow Kaleidoscope: original glitter wand kaleidoscope made by Illusions back in the 1990s. Intricate geometry from multiple reflections coupled with the viscous fluid motion of the glitter produces this psychedelic kinetic art. Under the illumination of a UV light this version takes it to the next level featuring fluorescent pieces and phosphorescent stars in the fluid of the wand. ➡️ Follow the link in my profile to find where to get kaleidoscopes like this and other amazing items featured here on @physicsfun #Kaleidoscope #kaleidoscopic #physics #reflect #glitterwand #physicstoy #psychedelic #kineticart #glitterstick #science #mirror #symmetry #math #mathtoy #geometry #glitterstick #UV #ultraviolet #blacklight #glowinthedark #scienceisawesome

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Get one here:

From Amazon: BUY NOW Fluid Kaliedoscopes

From eBay: BUY NOW Liquid Kaleidoscopes



Refraction Vanishing Act

Refraction Vanishing Act: the liquid (immersion oil) in this glass tube has the same index of refraction as the glass. When the oil covers the glass rod inside the tube, the rod becomes invisible! Immersion oil is used with high resolution microscopes and designed to have the same index of refraction as the glass slide and objective lens. This physics puzzle demonstration was handcrafted by a glass maker in Germany and is sold by experimentis, the online shop for physics. ➡️ Follow the link in my profile for info on where to get this and many other amazing items featured here on @physicsfun #physicstoy #physics #physicsfun #optics #indexofrefraction #immersionoil #microscope #microscopy #invisibility #refraction #glassart #science #scienceisawesome

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This glass device is available from this shop in Germany:

From experimentis-shop.de: BUY NOW Vanishing Glass Demonstration

See the following video and links for similar physics fun!



Poly-acrylamide Polymer Vanishing Act

Poly-acrylamide Polymer Vanishing Act: these spheres of hydrophilic polymer have an almost identical index of refraction as that of water- thus when submersed they become invisible. Note the elasticity of these spheres from the way they bounce, while at the same time they refract their surroundings as a spherical lens. The super absorbent spheres start as 1.5mm hard crystals and grow to 10mm when immersed in water for an hour or so. So much physics! ➡️ Follow the link in my profile for info on where to get these and other amazing items featured here on @physicsfun #indexofrefraction #refraction #physics #physicstoy #hydrophilic #watergel #watergelcrystals #polyacrylamide #optics #invisible #invisibility #science #scienceisawesome

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Get some of these grow-spheres here:


From Educational Innovations: BUY NOW Growing Spheres


Twin Fan Lissajous
Rave math fun for only $6.95!


From Educational Innovations: BUY NOW Twin Fan LED


Tapered Mirrors Kaleidoscope

Tapered Mirrors Kaleidoscope: the unique design of this teleidoscope uses three mirrors to create an image of a geodesic sphere. As can be seen through the semi-transparent acrylic tube, the three mirrors are tapered, with their smaller ends near the ball shaped lens. Three mirrors in an equilateral triangle configuration will produce a plane of tiled triangles, but if they are tapered the repeated reflections curve to infinity creating the sphere. In this design by Koji Yamami there are small gaps between the mirrors which allows in colored light from the iridescent tube to produce the radiant streaks of light. Invented by the famous Scottish physicist Sir David Brewster (1781-1868), the kaleidoscope is an ultimate physics toy and entire field of artistic endeavor. ➡️ Follow the link in my profile to find where to get kaleidoscopes like this and other amazing items featured here on @physicsfun #Kaleidoscope #kaleidoscopic #physics #reflect #teleidoscope #physicstoy #psychedelic #kineticart #science #mirror #symmetry #math #mathtoy #mathstoy #geometry #brewster #Brewstersociety #acyrlic #lucite #scienceisawesome

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This design by Koji Yamami available here:

From kaleidoscopeshop.com: BUY NOW Space Teleiedoscope
See the following videos and links for more amazing kaleidoscopes!


Kaleidoscope Symmetry Physics

Kaleidoscope Symmetry Physics: Two adjacent mirrors form the repeating image of a kaleidoscope, but the shape of the image is determined by the angle between the mirrors. This principle is demonstrated with three different symmetrical patterns using this beautiful set of precision teleidoscopes- angles of 36° (blue tube), 30° (green tube), and 22.5° (red tube), creating mandala stars with 5, 6, and 8 points. The angle for any symmetric star pattern of n points is just 180°/n. A teleidoscope is a kaleidoscope but with a lens on the end, such that the kaleidoscopic image is formed by whatever is put in front of it. Here the complex motion of a Gyrobi toy is used as the observation object. 🌟Thanks to Leif Colson of @ColoradoScopes for this set! ➡️ Follow the link in my profile to find where to get these teleidoscopes and other amazing items featured here on @physicsfun #Kaleidoscope #kaleidoscopic #physics #reflect #teleidoscope #physicstoy #psychedelic #kineticart #science #mirror #symmetry #math #mathtoy #mathstoy #geometry #brewster #Brewstersociety #gyrobi #scienceisawesome #coloradoscopes

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Colorado Scopes sells affordable high quality handmade precision kaleidoscopes and teleidoscopes:

From Etsy: BUY NOW Precision Teleidoscope

Get a Gyrobi here:

From Amazon: BUY NOW Gyrobi Toy
From eBay: BUY NOW Gyrobi Toy

Slinky Physics!
Get the classic here:

From Amazon: BUY NOW Mini Slinky
Get a giant version of the slinky here!


From Educational Innovations: BUY NOW Giant Slinky: Super Wave Spring


Spinning Copper Cutout Top
Get this amazing top here:

From Etsy- ShirePostMint: BUY NOW Spinning USA Top

See the next video for another physics toy made by ShirePostMint

Strobe Coin Spinner

Strobe Coin Spinning Top: beautiful coin tops made of solid copper and silver display a remarkable spinning strobe pattern when viewed on video from a smartphone. Incredible art/physics from @shirepostmint that takes advantage of aliasing and the wagon-wheel effect. The black enamel pattern on the top of the coin is specifically designed to interact with the frame rate of the video process to produce the intricate motions of the concentric circle patterns seen here, and on the back of the coin a starburst pattern provides similarly interesting effects. These coins can be spun on both sides with spin times reaching 12 minutes! The contact points are super hard spheres of silicon nitride black ceramic (Si3N4) providing a low friction bearing. ➡️ Follow the link in my profile for information on where to buy these and other amazing items featured here in @physicsfun #physicstoy #executivetoy #coin #cointop #strobetop #pockettip #spinningtop #angularmomentum #physics #rpm #aliasing #wagonwheeleffect #science #scienceisawesome

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These are not just tops, but works of art. Available in Copper and in Silver!

From Shire Post Mint on Etsy: BUY NOW Copper Strobe Top
and in one Troy once of 999 silver

From Shire Post Mint on Etsy: BUY NOW Silver Strobe Top


Iron Filing Field Detector

Iron Filing Field Detector: visualizing the invisible- the magnetic field lines around a dipole bar magnet. In the presence of a magnetic field, ferromagnetic materials (such as iron) temporarily become magnets. Here the iron filings become dipole magnets and link up and align like tiny compass needles to follow and reveal the magnetic field lines associated with the permanent magnet underneath. Viscous silicone oil temporarily keeps the iron particles suspended yet allows for rotation and repositioning under the influence of the magnetic field. ➡️ Follow the link in my profile for info on where to obtain this and other amazing items featured here on @physicsfun #physics #magnetic #magnetism #magneticfield #physicstoy #dipole #dipolefield #demonstration #silicone #physicsdemo #horseshoemagnet #electromagnetism #science #scienceisawesome

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Similar devices available from these fine sources:


From Educational Innovations: BUY NOW Magnetic Field Viewer with Magnet

From eBay: BUY NOW Magnetic Field Viewer Set


Tea-Light Floating Engine

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. ➡️ Follow the link in my profile for info on where to get this simple engine kit and other amazing items featured here on @physicsfun #engine #physics #thermodynamics #physicstoy #steamengine #phasechange #poppopboat #science #tealight #scienceisawesome #candle #heatengine

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The kit to make this engine is available from this shop in Germany:


From experimentis-shop.de: BUY NOW Tea-Light Engine
The physics of this engine design is used to power the famous pop-pop boat toy-- see next video and links!


Teleidoscope with Reflective Diffraction Disk

Very nice wooden mini-teleidoscopes are affordably priced here:

From Amazon: BUY NOW Mini Teleidoscope
From Etsy: BUY NOW Mini Teleidoscope

Diffraction spin disks are getting harder to find. Here are some sources:

From eBay: BUY NOW Diffraction Spin Disk
and here: From Flynn Sci: BUY NOW Atom Disk


Moondrop

Moondrop: using magnets and Lenz's Law to imitate free fall times on the Moon and Mars. The key to this device is the presence of neodymium magnets in the central aluminum column. When a non-magnetic metal ring moves down, the magnetic field in the center produces an electric current in the ring. The ring then temporarily becomes an electromagnet that exerts some repulsion against the center magnets slowing the ring down. The Earthdrop (blue) has the magnets removed from the column to provide comparison. Another unique and scientific fidget toy! ➡️ Follow the link in my profile for info on where to buy this and other amazing items featured here on @physicsfun #physicstoy #phyics #physicsfun #lenzslaw #moondrop #electromagnetism #neodymium #magnet #faraday #moon #mars #gravity #freefall #science #scienceisawesome

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High precision manufacturing and beautifully packaged-- Get the original here:

From the KS campaign: BUY NOW Moondrop Fidget



Oil Drop Cascade

Avilable here:

From eBay: BUY NOW Oil Drop Cascade Timer
From Amazon: BUY NOW Oil Drop Cascade Timer



Radiometer in Acrylic

Similar vintage items can often be found on eBay (a bit pricey though):

From eBay: BUY NOW Radiometer in Acrylic

Regular radiometers are available from these sources:


From Educational Innovations: BUY NOW Radiometer

A wide variety available here, including some nice blown glass displays:

From Amazon: BUY NOW Radiometers

Hundreds of options on eBay:

From eBay: BUY NOW Radiometers



Weighted Rattleback

Weighted 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! For this rattleback design, this behavior is related to the asymmetric placement of weights near the ends which are slightly rotated off of the line of symmetry. From experimentis, the online shop for physics toys. ➡️ Follow the link in my @physicsfun profile for info on where to get a rattleback and learn more about its physics. #rattleback #celt #physics #physicstoy #rotation #instability #kineticenergy #torque #friction #angularmomentum #precession #science #scienceisawesome #kineticart

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This beautiful weighted version is available from this shop in Germany:


From experimentis-shop.de: BUY NOW Weighted Rattleback

Educational Innovations has reasonably priced acrylic rattlebacks in their shop:


From Educational Innovations: BUY NOW Rattlebacks
From Amazon: BUY NOW Rattlebacks

See other rattleback designs in my collection here (and some links to the physics!)



Maxwell's Dynamical Top

Maxwell’s Dynamical Top: another demonstration of the strange properties of rotating bodies created by the great physicist James Clerk Maxwell. When this massive brass bell-shaped top is spinning an interesting stability can occur- push on the stem with an object (like a pencil) and the top will push back, forcing the stem against that object, and friction will cause the stem to roll along and trace the edge of the object. In this design the stem will trace along the edge of a metal spiral, clinging to it like a magnet- but magnets are NOT involved here. The key to this design is to make the contact point/tip of the top at its own center of mass, then any frictional force in contact with the stem will produce a torque about the contact point at right angle to the direction of friction that creates the stabilizing force (students of physics may recognize application of the right hand rule here). An extreme physics toy! ➡️ Follow the link in my profile for info on where to get most of the amazing items featured here on @physicsfun #angularmomentum #rotation #torque #vector #vectoraddition #precession #physics #physicstoy #MaxwellsTop #dynamical #spiral #friction #rollingwithoutslipping #spinningtop #science #gyroscope #gyroscopic #scienceisawesome

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This version of Maxwell's Top was produced in limited quantities in the 1990s by Lee Valley Tools. Currently hard to find.

Similar physics to gyroscopes! See next video and link for details.



Polage: Art with Polarized Light

Polage Display: art with polarized light using polarizing sheets and cellulose to create changing forms and colors. Rotation of the filter allows the artist to produce colorful metamorphosis. This piece was created by Austine Wood Comarow- the main developer of this art form- as part of a campaign to promote Maui Jim polarized sunglasses. Light has an orientation, denoted as polarization, and a polarizing filter can be used to block certain orientations. The colors in polage come from how the molecular structure of plastics can rotate the polarization of any light that passes through- but only light corresponding to yellows and greens gets rotated in plastic, reds and blues not so much. Polage uses different layers of plastic to rotate the light, and then polarizing filters are added to allow only certain frequencies (colors) of light through. ➡️ Follow the link in my profile for more info about the physics of polage and where to get art featured on @physicsfun #polarizer #polarizedlight #light #optics #physics #physicstoy #kineticart #electromagnetism #polage #science #linearpolarization #scienceisawesome #AustineWood #mauijim #polarizedsunglasses @austine_studio

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Austine has an online gallery of her amazing work.

From Austine Studios: Polarized Light Art

This kit has everything needed to make your own polarization art:


From Educational Innovations: BUY NOW Polarizing Film Kit
The kit also includes a birefringent crystal, colorful optically active mica sheets, and a polarimetry demo that reveals when structures are under stress. A great value for so much physics fun!

Sometimes Austine's work can be found on eBay:

From eBay: BUY NOW Polage by Austine

Here is a very nice discussion about polarization that pertains to Polage: Experiments With Polarized Light by Donald E. Simanek



Microscope Photopolymer Hologram

Microscope Hologram: This photopolymer hologram is so realistic one can look through the eyepiece! 🔬Using a halogen bulb as a point light source the microscope in this vintage 1980s reflective hologram pops from the page with stunning detail- and with the eye positioned just right one can see the magnified image of a small insect. Unlike photographs, holograms are recordings of the interference pattern of light waves. This interference pattern can encode moving 3D images which are revealed by illumination by a point source of light and viewing from an appropriate angle. My favorite hologram in my collection, and it looks even more stunning in person! ➡️ Follow the link in my profile for info on where to buy this and many of the amazing devices featured here on @physicsfun #physics #physicstoy #hologram #holographic #interference #optics #photopolymer #photopolymerhologram #microscope #laser #science #scienceisawesome #throwback

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This vintage hologram is currently available on eBay in limited quantities:

From eBay: BUY NOW Microscope Hologram



Tiny Tippie-Top

Available from this shop in Germany:


From experimentis-shop.de: BUY NOW Tiny Tippie-Top

Educational Innovations has reasonably priced, regular sized, wood tippe-tops in their shop:


From Educational Innovations: BUY NOW Tippe-Tops
From Amazon: BUY NOW Tippe-Tops



Paperclip Magnetic Top

Paperclip Magnetic Top: the magnetic tipped top attaches to the perimeter of the paperclip- but since the top has much more mass, the paperclip is put into curious motion due to Newton's 3rd law and the top's rotational inertia. This transparent version allows full view of the moving clip. Patented in 1946 under the name Hoy-Poy Top, this antique kinetic art toy made it into my collection as a gift from the folks at @shirepostmint- thanks! ➡️ Follow the link in my profile for info on where to get tops like this one and other amazing items featured here on @physicsfun #top #spinningtop #vintagetoy #newtons3rdlaw #physics #physicstoy #angularmomentum #relativemotion #magneticfield #magnetic #kineticart #science #centerofmass #magnetictop #scienceisawesome

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These tops will work with a paperclip too:

From Amazon: BUY NOW Magnetic Tipped Top

From Amazon: BUY NOW Magnetic Tipped Top



Vintage Eames era Kinetic Art

Vintage Kinetic Art: Eames era kinetic sculpture seemingly defies gravity as it glides in a graceful circle. The gold plastic sphere plus wire structure is designed such that its center of mass is few centimeters below the point of contact with its base. When the sculpture is tipped or spun, the center of mass swings under the pivot point in this stable equilibrium condition- no magnets needed to create this physics magic. ➡️ Follow the link in my profile for info on where to get many of the amazing items featured here on @physicsfun #kineticart #centerofmass #lowcenterofmass #balancetoy #physicstoy #physicsart #physics #stableequilibrium #equilibrium #oscillations #physicalpendulum #pendulum #torque #restoringforce #desktoy #science #scienceisawesome #newtonssecondlaw #centerofgravity

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Fun balance toy sculptures are available on Amazon:

From Amazon: BUY NOW Balance Sculpture Toys



Swirl Around Top

Available on eBay (2 current to this post)

From eBay: BUY NOW Vintage Swirl Around Top
Fun and inexpensive magnetic tipped tops:

From Amazon: BUY NOW Magnetic-Tipped Tops
From eBay: BUY NOW Magnetic-Tipped Top



Hollow Mask Dragon Illusion

These vintage items are often found on eBay (currently 3 available as of this post):

From eBay: BUY NOW Hollow Mask Illusion Lamp
Also available: Einstein!

From Amazon: BUY NOW Einstein Illusion

Wikipedia has the details on the Hollow Mask Illusion



50|50 Cube

50|50 Cube: custom 1 Newton SI unit version. A handheld study in material density contrast- the Kickstarter campaign is almost complete!- follow the link in my profile for details. This precision machined block is comprised of equal 101.97g masses (each block weighing exactly 1N on Earth) of the metals tungsten (W) and magnesium (Mg)- however the volume of magnesium is 11 times that of the very dense tungsten! One must hold and manipulate this simple sculpture for greatest impact. W: 19.25g/cm3 Mg: 1.74g/cm3 ➡️ Follow the link in my profile for info on where to buy this and other amazing items featured here on @physicsfun #physics #physicstoy #density #materialscience #tungsten #balancescale #magnesium #science #scienceisawesome

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Still time to order!

From KickStarter: ORDER NOW 50|50 Cube


Magnetic Sand Hourglass

Get one from these fine sources:


From Educational Innovations: BUY NOW Magnetic Sand Timer
From Amazon: BUY NOW Magnetic Hourglass



Scale Model Saturn with Ring System and Earth

Scale Saturn with Ring System and Earth: 3D printed accurate scale model of the Earth (diameter = 0.80 cm) and Saturn (diameter = 7.6 cm). The ring system is color printed on transparency film- note that the inner ring edge to the outermost ring measures 73000 kilometers and could fit almost 7 Earths side by side. The rings around the actual planet are very thin though, about 1 kilometer thick, so the transparency film is 250 times too thick to be to scale, and even just the thin 0.010 mm ink layer on the film is 20 times thicker that the actual rings would be at this scale! Made by artist/maker Jay Fisher using images from NASA. ➡️ Follow the link in my profile to get your own solar system and other amazing items featured here on @physicsfun #Saturn #scale #scalemodel #solarsystem #physics #physicstoy #scienceisawesome #science #astronomy #astrophysics #jpl #nasa #ringsofsaturn #3dprinting #celestial #celestialrocks #earth

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Made by Jay Fisher and available here!

From Shapeways: BUY NOW Saturn

Or buy the Solar System!

From Shapeways: BUY NOW Scale Model Solar System



Scale Model Jupiter and Earth

Made by Jay Fisher and available here!

From Shapeways: BUY NOW Jupiter

Or buy the Solar System!

From Shapeways: BUY NOW Scale Model Solar System


Shadow Stereographic Projection

Shadow Stereographic Projection: 3D printed sculptures that cast geometric shadows. When illuminated by a point source of light (placed at the top pole of the sphere) the shadow cast by the rays of light represent a one to one mapping of the points on the sphere to points on the plane- creating a square grid, and a honeycomb of regular hexagons. Stereographic projection is often used in representing the geography of the globe of our planet on to a flat map. Mathematical art by Henry Segerman. ➡ Follow the link in my profile for info on where to get these and many more of the amazing items featured here on @physicsfun #physics #physicstoy #physicsfun #math #mathtoy #mathstoy #mathematicalart #shadow #3dprinting #stereographicprojection #science #grid #honeycomb #scienceisawesome

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These mathematical art objects are created by Henry Segerman and available here:

From Shapeways: BUY NOW Stereographic Square Grid
From Shapeways: BUY NOW Stereographic Hex Grid


Wikipedia has a nice introduction to the math and applications of stereographic projection.



Iron Filings in Silicone Oil Suspension

Iron Filings in Silicone Oil Suspension: visualizing the invisible- the magnetic field lines around a horseshoe magnet. In the presence of a magnetic field, ferromagnetic materials (such as iron) temporarily become magnets. Here the iron filings become dipole magnets and link up and align like tiny compass needles to follow and reveal the magnetic field lines associated with the permanent magnet underneath. Viscous silicone oil temporarily keeps the iron particles suspended yet allows for rotation and repositioning under the influence of the magnetic field. ➡️ Follow the link in my profile for info on where to obtain this device and other amazing items featured here on @physicsfun #physics #magnetic #magnetism #magneticfield #physicstoy #dipole #dipolefield #demonstration #silicone #physicsdemo #horseshoemagnet #electromagnetism #science #scienceisawesome

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Get the set here:

From Amazon: BUY NOW Magnetic Field Viewer



Aqua Drop Puzzle

Three models/colors to choose from:

From Amazon: BUY NOW Aqua Drop Puzzles




Click here for more:

Physics Toys,



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