Dual Axis Sand Pendulum: the kinetic energy trades back and forth between swinging toward the support arm and then swinging perpendicular to that path tracing Lissajous figures in the sand. The sand slowly dissipates the energy and the traced figures get smaller so the next one fits inside the last. Coupled oscillations like this can occur when multiple modes of motion (degrees of freedom) are available to the system.
Get one here! Chose your color scheme and length, all come with the special motor and operating instructions:
From Educational Innovations: BUY NOW: Dancing Helix
The Dancing Helix: This kinetic mobile's mesmerizing motion arises from pulsed torsion waves that propagate up and down the length of a series of weighed rods connected by an elastic ribbon (which acts as a torsion spring). The waves arise by a special pulsed motor from which the strand hangs, and only spins for a second or so out of each minute. The twisting waves then constructively and deconstructively interfere creating an array of flowing motions.
Available here in a variety of colors and wood types:
From Amazon: BUY NOW: Kwish Tensegrity Toy
Tensegrity Icosahedron Toy: an architectural engineering inspired toy for tots- believe it or not this design is sold as a toy for babies: the Skwish rattle by the Manhattan Toy Company. Six wood struts float isolated from each other but held in a stable configuration by a net of 24 connecting elastic cords. This configuration of three sets of parallel struts forms a Jessen’s icosahedron under tension, and was invented by the famous architect Buckminster Fuller in 1949. A physics toy for ages 0 and up!
Art by Philippe Bouveret available here:
From the artist: BUY NOW philippebouveret.com
Water Drop Pulse Kinetic Sculpture: “Heart In A Bottle” is a kinetic art sculpture by Philippe Bouveret that utilizes the amazingly strong surface tension and adhesive properties of water. Two halves of a heart are attached to a wire spring which is periodically pulled together in a zipper like fashion by a single drop of water (as seen in 240 flp slow motion). The engineered system in the top bulb emits a water drop that adheres to the two wires, and as it falls surface tension pulls and connects the spring wires, which stay stuck together until gravity pulls down and thins the water coating enough such that the spring force can overcome the water’s adhesion. The halves of the heart then undergo vibrations that damp out until another drop forms in a process that repeats a few times a minute.
The DIY version can be assemebled with these parts. Steel wire of guage 10 or 12 should work well.
Magnetic Hoops Suspension Sculpture: Steel circles are suspended by a magnet (black sphere) and held down to the base by a thin thread. The tops of the steel hoops, being ferromagnetic, become a north pole in the presence of the south pole end of the black magnet, so they are attracted to the black magnet, but repel each other. Made by Rathcon Inc. in 1970. Swipe to see my DIY version made from a quilting hoop, neodymium magnets, and some bailing wire.
Bismuth levitation available here:
From Etsy- Element 83: BUY NOW Magnetic Levitation Sculptures
featuring amazing Bismuth Crystals, Jewelry, and Maglev Kinetic Art
Circa 1981, Physicists transmute Bismuth to Gold: Particle accelerators make possible the ancient alchemist’s dream—but at a steep cost
The Alchemist: cast from diamagnetic Bismuth, a neodymium cube magnet levitates trapped between the hands of the ancient scholar. Diamagnetic substances only have magnetic fields of their own when placed in an external magnetic field from another source- here the cube shaped magnet supplies the field. Diamagnetic fields are pretty weak though so a cylindrical neodymium magnet hangs above the figure and is adjusted to help lift the cube magnet against gravity. Trapped in equilibrium by these magnetic fields, the slightest air currents can send the cube magnet dancing. Although alchemists never succeeded in transmuting lead to gold, in 1981 physicists used the particle accelerator at Berkeley to shoot Carbon nuclei at thin foils of Bismuth- the resulting collisions did produced a tiny amount of Gold atoms! So modern nuclear physics, applied to the element Bismuth, finally accomplished the aspirations of the alchemists. ?Another amazing creation by Ernie McElhannon.
Get one and flow with it!
From Art of Play: BUY NOW
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.
Mini-Toroflux: kinetic art toy made from a single continuous loop of stainless steel band. The band of spring metal is woven such that it forms a torus that can clamp on to and roll down a stick or in this case s segment of cord. This miniature version loops through itself nine times which requires the spring ribbon to twist creating a tension such that when released the spring will pop into its minimum energy state- a flower-like torus. Amazing combination of math and kinetic art invented by Jochen Valett. Thanks to Tim Rowett for sending me this rare mini version for my collection.
ORDER HERE : Shashibo Geometric Art
Shashibo Transformations: a rhombic dodecahedron transforms into a cube- two possible configurations of this amazing dissection puzzle. The Shashibo is a cube cut into 12 equal irregular tetrahedra- these pieces are connected symmetrically with hinges, and 36 hidden magnets then allow more that 70 stable and geometrically interesting configurations to be discovered- swipe to see few more.