header bar

Physics Toy Store 06



Magic Sake Cup:

These are hard to find--
also beware that some versions of this cup (Dragonware) contain images many would consider "adult content"!

I recommend making one with a shot glass and a marble as described in this fun collection of DIY science experiments by Martin Gardner:


From Amazon: BUY NOW Science Fun by Martin Gardner



Silica Aerogel

Samples available here:

From eBay: BUY NOW Silica Aerogel Sample



"Magic" Wallet:

These have become popular recently:

From Amazon: BUY NOW Magic Wallet


From eBay: BUY NOW Magic Wallet



Magnetic Field Viewer

Get one here:


From Educational Innovations: BUY NOW Magnetic Field Viewer Cube



MaBoRun Mini II

Get one here!

From Amazon: BUY NOW Marble Runs


The spiral form of a lever: Wikipedia on Archimedes' Screw and the modern application in Auger Conveyors



MaBoRun Mini

Get one here!

From Amazon: BUY NOW Marble Runs



"Top Secret" Mystery Top:

"Top Secret": this top will stay spinning for more than a week- because it is actually a motor! The top is a dipole magnet (as revealed by Magneview film) and the base has an electromagnet that gives the dipole a push when the top comes near the center. An ingeniously simple circuit consisting of only a battery, a coil, and a transistor, is activated when the spinning magnet nears the coil turning on the electromagnet to give a boost to the spin of the magnetic top. ➡️ Follow the link in my profile for info on where to buy this and other amazing items featured here on @physicsfun #top #mysterytop #electromagnetism #physics #physicstoy #induction #inducedfield #transistor #electricmotor #motor #coil #inductor #ingenious #desktoy #awesome #science #Bfield #magnaview #magneview #magnaviewfilm #scienceisawesome

A post shared by physicsfun (@physicsfun) on


Here is the 1974 patent showing the very simple circuit of this device. The spinning dipole (the top itself) induces a current in one of the coils, and this current is fed to the base of the transistor turning the electromagnet on when the top is near.


This physics toy top is available here:


From Educational Innovations: BUY NOW Mystery Spinning Top

The amazing green magnetic viewing film is also available:
From Educational Innovations: BUY NOW Magnetic Field Viewing Film



Oil Drop Cascade from the Exploratorium gift shop


Visit the Exploratorium

Similar items available here:

From Amazon: BUY NOW Liquid Timers



UV Fluid Flow Kaleidoscope

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

A post shared by physicsfun (@physicsfun) on


Many versions of this kaleidoscope are available:

From Amazon: BUY NOW Fluid Flow Kaleidoscope


From eBay: Fluid Flow Kaleidoscope



Trichroic Beam Splitter


Another amazing product by the Mr. Sci Science Toy Factory


From Mr. Sci Science Toy Factory: Trichroic Prism



Anti-Counterfeit Physics:

Anti-Counterfeit Physics: Canadian banknotes integrate a number of security devices including foil rainbow holograms and far field holograms. The bill is not paper but instead a thin film polymer, and some transparent windows are built in- including one shaped like a maple leaf. If a laser is directed through the leaf window the denomination of the note (in this case $5) can be projected onto a wall. Looking through the leaf window at a point of bright light also reveals the holographic image. This note is from the Frontier Series released in 2011. ➡️ Follow the link in my profile for more info, and where to obtain the amazing items featured here on @physicsfun #canada #bankofcanada #SirWilfredLaurier #holidayspecs #holospecs #transmissionhologram #hologram #holographic #physics #physicstoy #diffraction #laser #optics #diffractiveopticalelement #science #constructiveinterference #encoding #scienceisawesome

A post shared by physicsfun (@physicsfun) on


Learn more about this series of banknotes and the interesting security features on Wikipedia: Frontier Series

If you don't live in Canada, you can get these bills on eBay:
From eBay: Canada $5 Polymer Bank Note

See the next videos and links for more interesting hologram physics.



Diffractive Optical Element Sample

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! This sample demonstrates the highest resolution I've ever seen for this kind of hologram- amazing. ➡️ Follow the link from my profile for info on where to obtain this and other amazing items featured here on @physicsfun #holidayspecs #holospecs #transmissionhologram #hologram #holographic #earth #physics #physicstoy #diffraction #laser #optics #diffractiveopticalelement #science #constructiveinterference #encoding #scienceisawesome

A post shared by physicsfun (@physicsfun) on


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

This physics of this device is closely related to that of far field holography- see the following two posts for further examples of fun physics toys available using similar technology.



Wild Eyes Holographic Glasses (part II)

Far Field Hologram Glasses (part II): holographic glasses can also be used to project an image using the beam of a laser- the exact same technology used to make the "projection caps" on inexpensive laser pointers. The "lenses" in these glasses are actually transmission holograms, but with the image at maximum depth of field so that the image forms around all point sources of light (such as the Maglite flashlight bulb). Made by American Paper Optics LLC, many other images are available, but the sharks are my favorite. ➡️ Follow the link in my @physicsfun profile to get a pair of these glasses- also comes in T-Rex, Dolphin, Bat, Crocodile, and 7 other animals. #holidayspecs #holospex #wildeyes #holospecs #transmissionhologram #hologram #holographic #shark #physics #physicstoy #diffraction #constructiveinterference #science #virtualimage #encoding #scienceisawesome

A post shared by physicsfun (@physicsfun) on


Made by American Paper Optics Inc. all versions of these holographic glasses can be found here:

from Amazon: BUY NOW Wild Eyes 3D Glasses

Here is an excellent description of the physics and principles of operation of these far-field holograms by the manufacturer HoloSpex, Inc. Interestingly, this is the same physics used to make the laser projection caps (see next video below).

Need a laser pointer? Incredibly, you can get 3 (one of each color) for under $10 (including S&H):

From eBay: BUY NOW Red+Green+Purple Laser Pointer



Wild Eyes Holographic Glasses (part I)

Wild Eyes Holographic Glasses: put on these goggles and on top of every point-source of light will appear an animated holographic image of sharks swimming. (Here I used a Maglite flashlight with the cap removed.) The "lenses" in these glasses are actually transmission holograms but with the image located at the farthest point in the depth of field. In this version there are three holographic images in a trifocal glasses arrangement- tilting one's head brings the animation to life! Made by American Paper Optics LLC, many other images are available and look even more amazing in person as it is hard to capture the experience with a camera. ➡️ Follow the link in my @physicsfun profile to get a pair of these googles- also comes in T-Rex, Dolphin, Bat, Crocodile, and 7 other animals. #holidayspecs #holospex #wildeyes #holospecs #transmissionhologram #hologram #holographic #shark #physics #physicstoy #diffraction #constructiveinterference #science #virtualimage #encoding #scienceisawesome

A post shared by physicsfun (@physicsfun) on


Made by American Paper Optics Inc. all versions of these holographic glasses can be found here:

from Amazon: BUY NOW Wild Eyes 3D Glasses

Here is an excellent description of the physics and principles of operation of these far-field holograms by the manufacturer HoloSpex, Inc. Interestingly, this is the same physics used to make the laser projection caps (see next video below).

Need a laser pointer? Incredibly, you can get 3 (one of each color) for under $10 (including S&H):

From eBay: BUY NOW Red+Green+Purple Laser Pointer


Magnetic Equilibrium Toy

Made from inexpensive ceramic magnets available here:

from Amazon: BUY NOW Ring Magnets
from Amazon: BUY NOW Small Disk Magnets



The Chembongo

The Chembongo: expertly crafted from African Blackwood this device prefers to only spin clockwise! If spun counter 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. 🌟 Thanks to artist Jack Mankiewicz for this beautiful addition to my collection. ➡️ Follow the link in my @physicsfun profile for info on where to get a rattleback and learn more about its physics. #chembongo #rattleback #celt #physics #physicstoy #rotation #instability #kineticenergy #torque #friction #angularmomentum #precession #science #scienceisawesome #kineticart

A post shared by physicsfun (@physicsfun) on


Produced in limited supplies by artist Jack Mankiewicz. See more of his work at Chembongo.com

From Amazon: BUY NOW Chembongo

Learn more about rattlebacks and their physics in the videos and links below.


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 @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

A video posted by physicsfun (@physicsfun) on


These acrylic versions work great and are inexpensive:


From Educational Innovations: BUY NOW Rattlebacks


From Amazon: BUY NOW Rattlebacks

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


Switch Pitch Ball

Switch Pitch Ball: this spherical assembly changes color by turning inside out when tossed into the air. Advertisements for this toy incorrectly claim air drag is involved in the transformation. The ball is made of multiple components hinged together. In launching the ball from the hand an upward acceleration results in a torque that pivots each component around its center of mass, causing the rotation of these components in an organized way leading to the transformation. Imagine tossing a stick straight up. If the stick is perfectly vertical upon launch it will move straight up- but if it is initially slanted at all it will also begin to rotate upon launch. Similar physics underlies the motion of each component of the ball- shown here in 240 fps slow motion (with new LED illumination to prevent flicker!) The Switch Pitch is produced by the makers of the Hoberman Sphere. ➡️ Follow the link in my profile for info on where to get this device and many other amazing items featured here on @physicsfun #kineticart #kineticenergy #torque #physics #physicstoy #angularmomentum #centerofmass #symmetry #HobermanSphere #sphere #switchpitchball #science #scienceisawesome

A post shared by physicsfun (@physicsfun) on


Get one from these fine sources:

From Amazon: BUY NOW Switch Pitch



From Educational Innovations: BUY NOW Switch Pitch



Water Spinner (Part II) at the Exploratorium

Water Spinner- Part II @exploratorium : a pair of shock waves (from the initial impulse) travel along the parabolic surface of the contained liquid, creating temporary peaks and valleys as they constructively and deconstructively interfere. As seen here in 240 fps slow motion, the symmetric waves travel and reflect along the curved surface for the first few rotations until damped out via viscosity and friction. See last Friday's post for more details about this amazing exhibit. 🌟 With special thanks to the Exploratorium! ➡ Follow the link in my profile for more info about this exhibit at the Exploratorium- and where to find many of the items featured here on @physicsfun. #exploratorium #physics #physicsfun #physicstoy #centripetalacceleration #spincam #angularmomentum #parabola #parabolic #pascalsprinciple #hydrostatics #spinning #kineticart #science #scienceisawesome

A post shared by physicsfun (@physicsfun) on





Water Spinner at the Exploratorium

Water Spinner @exploratorium : The parabolic surface of a contained liquid under the combination of centripetal acceleration and the pull of gravity. Centripetal acceleration increases proportional to the distance from the axis of rotation, so the liquid stacks highest far from the center. Also, a faster spin rate results in a deeper and steeper parabola- note how the surface flattens out as the exhibit comes to rest. Additional physics- symmetric waves (from the sharp initial impulse) travel and reflect along the curved surface for the first few rotations until damped out via viscosity and friction. A future post will highlight this initial wave phenomenon- stay tuned! 🌟 With special thanks to the Exploratorium! ➡ Follow the link in my profile for more info about this exhibit at the Exploratorium- and where to find many of the amazing items featured here on @physicsfun. #exploratorium #physics #physicsfun #physicstoy #centripetalacceleration #angularmomentum #parabola #parabolic #pascalsprinciple #hydrostatics #spinning #kineticart #science #scienceisawesome

A post shared by physicsfun (@physicsfun) on


Read more about this exhibit here:

Exploratorium Science Snack: Water Spinner

Visit the Exploratorium

For those that want the math!
A youTube tutorial Spinning Water: The Mathematical Explanation



Mini Newton's Cradle


from Amazon: BUY NOW Miniature Newton's Cradle



Sound Activated Motion lamp

Sound Activated Motion Lamp: 1970s "Dancing Lights" fiber optic lamp. A fiber bundle is illuminated by a lamp in the base and the bundle spins with a velocity proportional to the intensity of nearby sound. The resulting patterns of light are due to a combination of the length of each fiber, centripetal acceleration, and oscillations due to the elasticity of the fibers. Music with wide dynamic range provides the best spectacle, in this case the guitar intro to "Bad Horsie" by Steve Vai. ➡️ Follow the link in my profile for info on where to buy a vintage fiber optic lamp and many of the amazing items featured here on @physicsfun #fiberoptic #internalreflection #optics #lightpipe #kineticart #physics #physicstoy #throwback #fiberoptic #dancinglights #vintage #fiberopticlamp #1970s #science #scienceisawesome

A post shared by physicsfun (@physicsfun) on


Here is the packaging for this vintage device- complete with neon disco font.


See the next video and links for more amazing vintage fiber optic lamps.


Fiber Optic Cactus Lamp

Vintage fiber optic lamps like this one are available on eBay most of the time:

From eBay: BUY NOW Vintage Fiber Optic Flower



Viscoelastic "Melting Snowman"

Viscoelastic "Melting Snowman": non-newtonian flow is demonstrated by these blobs of viscoelastic silicon polymer (aka Silly Putty) in the shape of snowman- if force is applied over a short period of time the substance shows elastic properties (bounces like a superball), but if the force is applied slowly the substance flows like a viscous liquid (flattens under gravity over a few hours as shown here). Thus this snowman does not melt because it is already liquid, one that flows slowly though. Mostly sold as a toy, Silly Putty was discovered after mixing boric acid with silicone oil during World War II in an attempt to find a rubber substitute. ➡️ Follow the link in my profile for info on where to get this and many of the amazing items featured here on @physicsfun #viscoelastic #nonnewtonian #fluiddynamics #nonnewtonianfluid #physics #physicstoy #elastic #dilatant #dilatantmaterial #science #viscosity #coefficientofrestitution #scienceisawesome @educational_innovations #meltingsnowman #snowman

A post shared by physicsfun (@physicsfun) on


Get the kit here!


From Educational Innovations: BUY NOW Melting Snowman Kit



Planetary Gear Train

Planetary Gear Train: with non-circular gears! This piece of kinetic art features a 6-sided Sun Gear, six 3-sided Planetary Gears, all held within the 12-sided space of the Annular Gear. The video captures three of the many interesting modes of these epicylic gear systems: 1) holding the sun gear fixed while rotating the annular gear allows the planetary gears to orbit, 2) pinning the planetary gears such that they can spin (but not orbit) allows the sun gear to go in the reverse direction of the annular gear, 3) holding one planetary gear fixed produces curious motion- note that although the other planetary gears move they do not spin about their axes! Situation 2) is how reverse gear is accomplished in the transmissions of many vehicles. Thanks to Logan Needham (@pillagethenburn) for the ingenuous display stand that allows full demonstration of this work of physics and engineering art. ➡️ Follow the link in my profile for information on where to get this device and many others amazing items featured here on @physicsfun #epicyclic #epicyclicgearing #planetarygear #planetarygearset #epicycloid #physics #physicstoy #noncirculargear #sungear #geartrain #science #kineticart #art #lasercut #torque #scienceisawesome

A post shared by physicsfun (@physicsfun) on


From Rail and Oak: the Esty shop of Logan Needham

From Etsy: BUY NOW Planetary Gear System



Mirror Illusion Bank:

Versions of this coin bank are available here:

From eBay: BUY NOW Art Bank Illusion
From Amazon: BUY NOW Art Bank Illusion



The ΦTop - Golden Version

The ΦTop - Golden Version: spinning things have surprising physics! This unique top is made of solid brass in the shape of a prolate elIipsoid- and the name of the top is derived from the following design requirement: the ratio of the semi minor (short) axis to the semi major (long) axis is made equal to the mathematical constant the golden ratio φ (phi). Invented by astrophysicist Kenneth Brecher, this top stands up vertically (when spun with sufficient rotational velocity) due to physics similar to that of the tippe-top. The concave mirror keeps the top from wandering off and the glass surface has minimal friction allowing the top to spin for a long time- this video shows various stages of 8 minutes of total spin time. ➡️ Follow the link in my profile for info on where to get this top and many other amazing items featured here on @physicsfun #ellipsoid #oblateellipsoid #conicsections #tippetop #torque #angularmomentum #rotationalinertia #physics #physicstoy #flip #flipover #precession #spin #spinning #top #spinningtop #science #scienceisawesome

A post shared by physicsfun (@physicsfun) on



This version of the ΦTop is made of solid brass and has a mass more than three times that of the aluminium version (see photo below), the difference in weight is substantial and obvious when handling these tops. The brass version will spin much longer due to its larger inertia.


Professor Brecher has a limited supply of these "golden" (brass) versions of this top available on Etsy

From Etsy: BUY NOW PhiTOP in Brass

See the video below for the aluminum version.


PhiTOP

The PhiTop: spinning things often have surprising physics! This unique top is made of solid aluminum in the shape of a prolate elIipsoid- and the name of the top is derived from the following design requirement: the ratio of the semi minor (short) axis to the semi major (long) axis is made equal to the mathematical constant the golden ratio φ (phi). Invented by astrophysicist Kenneth Brecher, this top stands up vertically (when spun with sufficient rotational velocity) due to physics similar to that of the tippy-top. ➡️ Follow the link in my profile for info on where to get this and other amazing items featured here on @physicsfun #ellipsoid #oblateellipsoid #conicsections #tippetop #torque #angularmomentum #rotationalinertia #physics #physicstoy #flip #flipover #precession #spin #spinning #top #spinningtop #science #scienceisawesome

A post shared by physicsfun (@physicsfun) on


Get one here!



From Educational Innovations: BUY NOW PhiTOP
From Amazon: BUY NOW PhiTOP




Click here for more:

Physics Toys,



UA-63736203-2

No comments: