![]() Tesla’s Egg of Columbus: an aluminum ellipsoid egg (PhiTOP) mysteriously spins and stands upright in this modern version of Tesla’s famous demonstration from the 1893 World’s Fair in Chicago that first showcased the principles behind wireless power transfer and his AC induction motor. ![]() Get the aluminum phiTOP "egg" here: BUY NOW phiTOP This version comes with a 35mm solid aluminum sphere. Get this amazing (and affordable) reproduction here:įrom engineDIY: BUY NOW: Tesla's Egg of Columbus Amazing magnetic levitation physics demonstrated by clever engineering by the this clock will work lying flat or hung on a wall vertically! This kind of levitation uses a control system with adjustable electromagnet coils in a feedback loop with Hall effect sensors which allow for fine tuning of a magnetic field to precisely balance the pull of gravity. The orbit of the magnetic ball can be set to any period but also has default selectable presets to indicate the current hour, minute, or second. STORY Clock: a spherical magnet hovers one centimeter from the face of this amazing clock and orbits in a circle to indicate the time- for this video I selected an orbit period of 40 seconds to show off the motion. This very high-tech clock is also high end (more expensive than most items I feature), with excellent craftmaship and technology that is clearly hard to replicate so that it is only made by, and available from, the FLYTE team:įrom FLYTE: BUY NOW: US & Global Sales Story Clock or in EU Story Clock 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. Interestingly the Al tube is about half the mass of the Cu one, even though it is larger in volume. 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. 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. Health Canada says consumers who have Mega Brands Magnetix Magnetic Building Sets should discard them in a way so that they cannot be re-sold or redistributed.Available as a set, or individually (all come with the super powerful sphere magnet) here:įrom : BUY NOW: Copper + Aluminum Feel Fluxįrom Educational Innovations: BUY NOW Magnetic Viewing Filmįrom Amazon: BUY NOW Magnetic Viewing Filmįeel Flux Loop: original (copper) and the "Skill Flux" version (aluminum)- toys that use Lenz's Law to manipulate a very strong neodymium magnet. READ MORE: 16×9 investigation – Perilous play and the dangers of magnetic beads This can cause intestines to twist and create blockages or produce tears in intestinal walls. The child received medical care quickly and didn’t sustain any injuries.īut the department says if a child swallows more than one magnet, they can be drawn together in the child’s intestinal tract. ![]() ![]() The warning comes after the department received a report of a recent incident where a three-year-old swallowed two magnet rods from a Mega Brands Magnetix Magnetic Building Set. TORONTO – Health Canada is repeating its warning that toys containing small, powerful magnets are a health risk to children. Send this page to someone via email email. ![]()
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