Get this amazing and affordable science sculptue here:
From Etsy: BUY NOW: Bismuth Maglev Rod
Click here to see other diamagnetic toys and scuptures
Bismuth Maglev Rod: Small magnets are trapped, suspended and floating, within the notch of a rod cast from the diamagnetic metal bismuth. Diamagnetic substances only have magnetic fields of their own when placed in an external magnetic field from another source- here the small floating magnet supplies the external field. Diamagnetic fields are pretty weak though, so a powerful neodymium magnet sits above the gap on the top of the rod, and its height is adjusted to help lift the small magnet against gravity. Another amazing creation by Ernie McElhannon of Element83.
Available as a set, or individually (all come with the super powerful sphere magnet) here:
From feelflux.com: BUY NOW: Copper + Aluminum Feel Flux
Get some magnetic viewing film here:
From Educational Innovations: BUY NOW Magnetic Viewing Film
From Amazon: BUY NOW Magnetic Viewing Film
Feel Flux Loop: original (copper) and the "Skill Flux" version (aluminum)- toys that use Lenz's Law to manipulate a very strong neodymium magnet. A changing magnetic field (such as that from a falling magnet) induces an electric current in the copper, which in turn produce an electromagnetic field (but of lesser strength) with opposing polarity. Interestingly 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. Swipe to see the effect via magneview film which allows a visualization of the magnetic field- note that the field extends and is visible right through the thick copper.
Get this set here:
From Amazon: BUY NOW
Magnetic Viewing Cylinder
Dipole Magnet and Iron Filings: visualizing the invisible- the magnetic field lines around a dipole 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 end to end to follow and reveal the magnetic field lines associated with the permanent magnet within the hollow tube.
Get a set here!
From Amazon: BUY NOW Buzzing Magnet Set
Rattlesnake Eggs: polished barium- strontium ferrite ceramic magnets influence each other when many centimeters apart. Turn sound on--Wait for it! Sold as "buzzers" these magnets come together with multiple bounces creating a characteristic zipper sound. Most shops and online vendors incorrectly label these as hematite- a completely different substance that does not magnetize well.
Get this kit here (comes complete as shown in my video):
From engineDIY: BUY NOW: Magnetic Levitation Module
The featured sculture is by Bathsheba Grossman, affordable and beautiful math art available here:
From Etsy: BUY NOW: Soliton Sculpture
Electromagnetic Levitation Module: this engineered control system uses adjustable electromagnets (four copper coils) and and two Hall effect magnetic field sensors (held firm embedded in white silicone) to levitate an 5cm diameter neodymium magnet platform about 3 cm in mid-air. A feedback loop informed by the Hall effect sensors allows fine tuning of the magnetic field to exactly balance the pull of gravity, and is powered by a standard USB connection. The platform also rotates, perfect for showcasing one of my metal 3D printed mathematical sculptures by Bathsheba Grossman.
See more of Ernie's amazing creations here in his Etsy shop Element83
From Etsy: BUY NOW Magnetic Levitation Sculptures
Bismuth Diamagnetic Trap Levitation: neodymium cube magnet trapped between two pieces of strongly diamagnetic bismuth crystal. 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 two large ceramic magnets are placed on each side and 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. Another amazing creation by Ernie McElhannon.
From Amazon: BUY NOW Penultimate Floating Pen
From eBay: BUY NOW Penultimate Floating Pen
Penultimate: magnetic levitation pen. A two dimensional magnetic trap suspends a ball point pen- in this design the point of the pen against a polished acrylic acts as a bearing to let the pen spin with minimal friction.
Get one here:
From feelflux.com: BUY NOW 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.
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.
Available from these shops in Germany:
From experimentis-shop.de: BUY NOW
From mabro.com: BUY NOW
Similar toys available here:
From eBay: BUY NOW
From Amazon: BUY NOW
Tegu Car Sets
Toy Car with Magnetic Suspension Wheels: Simple block car with clever wheel design. Small neodymium magnets embedded in the block lock on to steel balls, which raise the vehicle and become free to rotate providing the wheels for this simple toy.
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.
Check out the Etsy page of CZFerro: imaginative and quality ferrofluid display cells
On Etsy: BUY NOW Magnetic Fluid Sculptures
spYke Ferrofluid Display Cell: another spectacular display cell by czferro featuring a colloidal ferromagnetic liquid in a specially prepared water-alcohol suspension. The orange background highlights the curious spiking behavior of the black ferrofluid- a result of the interplay between magnetic force and surface tension between the liquids.
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.
Click here to visit this amazing Etsy shop Element83
Get a magnetic levitation sculpture here:
From Etsy: BUY NOW Diamagnetic Levitation Sculptures
Eclipse: A diamagnetic levitation sculpture by Element83. Cast from diamagnetic Bismuth, a golden spherical neodymium magnet levitates trapped in a tunnel within the metal. Diamagnetic substances only have magnetic fields of their own when placed in an external magnetic field from another source- here the sphere magnet supplies the field. Diamagnetic fields are pretty weak though so a powerful cube neodymium magnet sits above the tunnel and is adjusted to help lift the sphere magnet against gravity. Trapped in equilibrium by these fields, any other magnet brought near will change the balance. ?Another amazing creation by Ernie McElhannon.
Now on KickStarter!
From KickStarter: Pledge NOW: Hover Pen
The HoverPen: A sleek writing pen trapped against gravity- at an elegant angle- by a magnetic field via precision engineered placement of neodymium magnets in the base. Get this 2D magnetic trap on KickStarter now.
I used neodymium disk magnets, small end = 1/2" diameter, Large end = 3/4" diameter.
From eBay: BUY NOW Disk Magnets for Simple Motor
Foil Runner Motor assembly diagram:
Self-Propelled Homopolar Motor on Aluminum Foil Racetrack: A favorite DIY physics toy where disk shaped neodymium magnets supply the static magnetic field for this motor and become the wheels of a very simple vehicle with an AAA battery as the energy source. As soon as both ends make contact with the conducting aluminium foil an electric current will flow which in turn induces a magnetic field underneath the battery assembly. This induced field will then interact with the neodymium magnets on each end causing them to spin- a wonderful example of a motor with minimal components. The racetrack is a cardboard circle from a pizza box covered in kitchen foil.