This inexpansive kaleidoscope is available here:
From increadiblescience: BUY NOW: Moire Tube Kaleidoscope
Click here for affordable, precision made scopes with angled mirrors: Kaleidoscope Symmetries Explored
See more kaleidoscopes in my collection: Kaleidoscopes
Equilateral Triangular Kaleidoscope: three mirrors arranged in a 60-60-60 degree triangle creates the appearance of a plane filled with triangles (or equivalently a honeycomb lattice)- perhaps the most common mirror configuration design, this inexpensive kaleidoscope produces an excellent example of the reflection pattern. As a bonus the exterior tube on this scope incorporates a kinetic Moirè pattern. The kaleidoscope was invented by the famous Scottish physicist Sir David Brewster (1781-1868), and has become an entire field of artistic endeavor.
This design by Koji Yamami available here:
From kaleidoscopeshop.com: BUY NOW Space Teleiedoscope
Click on this link for details on the physics and symmetries of two mirror kaleidoscopes.
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.
This type of kaleidoscope is hard to find and mostly made by artists. Here are two examples currently avaliable:
From Etsy: BUY NOW: Chorus Line Kaleidoscope
From KaleidoscopeShop.com: BUY NOW: Chorus Line Kaleidoscope
Click here for affordable, precision made scopes with angled mirrors: Kaleidoscope Symmetries Explored
Chorus Line Kaleidoscope: an interesting and uncommon kaleidoscope design where two mirrors are placed with surfaces parallel to each other- resulting in a side by side strip of alternating images. Here the camera is attached to the view port and the entire tube is rotated to produce the changing patterns. The kaleidoscope was invented by the famous Scottish physicist Sir David Brewster (1781-1868), and has become an entire field of artistic endeavor.
Available from my friends at Grand Illusions Ltd.:
From Grand Illusions: BUY NOW
Magnetic Top with Spiral & Snake
Magnetic Tip Spinning Top: the top stays on the perimeter of the steel plate spiral- but since the top is more massive, the spiral moves with curious motion. This kinetic art toy takes advantage of Newton's 3rd law and rotational kinetic energy.
Versions of the Gee Haw Whimmy Diddle available from these sources:
From Etsy: BUY NOW: Hooey Stick Folk Toy
From Amazon: BUY NOW Hooey Stick Folk Toy
From eBay: BUY NOW Hooey Stick Folk Toy
Phase Locking Folk Toy: rubbing the stick over the notches creates both vertical and horizontal vibrations- and leads to an elliptical motion of the nail in the center of a propeller, which begins to rotate due to friction with the nail. This toy is called a Gee-Haw Wimmy Diddle (see the Wikipedia page- I kid you not) or a Hooey Stick. Note that depending on how the stick is held, the propeller will spin clockwise or counterclockwise.
Available on Etsy: BUY NOW Motion Ferrofluid Sculpture
Colored Ferrofluid Display Cells: spectacular metallic blue, gold, and black display cells by czferro - colloidal ferromagnetic liquids in a specially prepared water-alcohol suspension. Curious behavior results from the interplay between magnetic force and surface tension. The gold and blue coloring appears to be from a thin coating at the boundary between the ferrofluid and the suspension liquid. Still exploring the details of the coloring and the specific makeup of the clear suspension fluid - both trade secrets it seems.
Here are some available kinetic illusions that operate on the same principle:
From Amazon: BUY NOW Spiral Spinner Illusion
From eBay: BUY NOW Spiral Spinner Illusion
Dual Spiral Kinetic Art: hanging by fishing line, thick gauge steel wire is shaped into connected helixes- a pair twisting clockwise and a single coiled counterclockwise. When spinning the rotational motion creates translational motion both upwards and downwards along the vertical direction, and also the striking illusion that the quartz sphere is climbing or descending.
Message Luycho on Instagram about this design. Other designs can be seen here:
Luycho | A New world on Mirrors
Somtimes available here:
From Amazon: BUY NOW: Anamorphic Cups & Saucers
Click here for more Mirror Anamorphic
Mirror Anamorphic Lenticular Cup & Saucer: a flamingo sits in a nest of flowers, revealed when the cylindrical mirrored cup is put in place. This beautiful design by Luycho uses both mirror anamorphic reflection and an accordion type lenticular dual image where turning the plate 180 degrees trades images- using my new photography turntable to nice effect. Art meets math and physics!
Gat a sample of Singularity V3 here:
From KickStarter: BUY NOW: Singularity V3
Vertical Nanotube Array Absorber Set: Singularity V3 technology uses a nano-forest of carbon to absorb 99.9% of light incident perpendicular to its surface making this coating one of the darkest synthetic surfaces available. The surface of nanotubes is quite fragile so these samples come with an acrylic case with removable cover. Thanks to Singularity Designs for sending me these nice samples.
Get this similar demonstration kit here:
From Educational Innovations: BUY NOW
Ice Blocks Melt Demo
Ice Melt Demonstration: Wood or Aluminum- which will melt the ice fastest and why? Both blocks start at the same temperature (room temp) and have the same shape and volume. Swipe to reveal result shown in real time (not sped up!) Hint: Although both blocks are at the same temperature, the aluminum feels cool to the touch and the wood block feels warm. Those who have taken basic physics should have an advantage on this question- one block is an excellent insulator and the other a conductor.
The Novascope can be ordered from the artist here:
From novascopes.com: Order here Novascope by David Sugich
Novascopes can sometimes be found on eBay
From eBay: Search NOW Novascope Kaleidoscopes
Novascope: tapered mirror kaleidoscope by David Sugich uses three mirrors to create an image of geodesic spheres. 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 spherical geometry. In this design there are thin gaps etched into one mirror which allows in colored light from a flashlight (on the white side of the pyramid shaped scope) to produce the hexagon lattice. Shining a light through the view portal reveals where the colored lines come from as a flashlight moves from top to bottom and back. Invented by the famous Scottish physicist Sir David Brewster (1781-1868), the kaleidoscope is an ultimate physics toy and entire field of artistic endeavor.
Available in a variety of styles:
From eBay: BUY NOW Magnetic Top and Snake
From Amazon: BUY NOW Magnetic Top and Snake
Magnetic Top and Snake: the magnetic tipped top stays on the perimeter of the steel snake (or is it a planarian?)- but since the top has much more mass, the snake moves the most slithering to and fro. This kinetic art toy has been around for decades and takes advantage of Newton's 3rd law and rotational kinetic energy.
Some nice versions of this impossible object available here:
From Etsy: BUY NOW: Golf Ball in Wood Cage
See more of these thought puzzles in my collection here: Impossible Objects
Impossible Caged Golf Ball: Here a regular off-the-shelf golf ball somehow trapped within a cage made from a solid piece of hardwood walnut. Neither the ball nor the wood were cut or glued in the fabrication process. The puzzle aspect is to consider how this object was produced (I have some theories- but I do not know the secrets of this artist).
From eBay: BUY NOW set of four ambiguous objects with booklet
This offical kit/book from Prof. Sugihara contains four white plastic illusion objects (including the object in the video) and a booklet.
Some 3D prints are available from many makers here:
From eBay: BUY NOW Ambiguous Objects
These type of objects were invented by mathematician Kokichi Sugihara, and you can buy his other books here:
From Amazon: BUY NOW Ambiguous Objects by Kokichi Sugihara
Also available from Amazon (Japan): BUY NOW set of four ambiguous objects with booklet
Another illusion design by Kokichi Sugihara of Meiji University in Japan, the inventor of this illusion and art form. A mathematically calculated combination of perspective and the physics of reflection produce this striking illusion that works in many configurations.
Only available from these aritist/craftsmen:
From Etsy: BUY NOW: Impossible Bolt & Nuts
Impossible Bolt: one nut threads on clockwise as normal- the other threads on counterclockwise on the same bolt! Not impossible- but carefully engineered and machined. Swipe for partial hint on mechanism. This puzzling curiosity was inverted by Scott Eliott and machined in solid brass by puzzle crafters Steve Nicholls and Ali Morris of TwoBrassMonkeys.
This inexpensive kit available here: From eBay: BUY NOW
Hyperbolic Holes Kit
Hyperbolic Holes: a straight rod, in this case a pencil, glides through a symmetrical pair of curved holes. The design is based on the hyperboloid, the 3D ruled surface traced by an offset rotating diagonal line. This device is sold as an inexpensive kit to assemble yourself, and includes a motor with geared drive and pre-cut pieces. The pencil is my addition- just the right size to clear the curved openings.
Get a set here:
From Amazon: BUY NOW Magnetic Field Viewer set
Viewing Magnetic Poles: visualizing the invisible- tiny iron filings suspended in viscous oil gracefully chain up to reveal the presence of magnetic field lines. Can you determine how the magnetic polls are configured by the structure of the field lines? Here three configurations, initially hidden behind white foam board, create the beautiful mappings of the fields.
Get this floating broomstick pen here:
From Amazon: BUY NOW: HP Levitating Broomstick Pen
From eBay: BUY NOW: HP Levitating Broomstick Pen
Nimbus 2000: physics wizardry (via a 2D magnetic trap) creates the illusion of Harry Potter magic. This broomstick won’t fly, but will remain levitated due to a careful arrangement of permanent magnets in the base and bristles.