Magnetic Toys

Iridescent Ferrofluid

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From Etsy: BUY NOW: Iridescent Ferrofluid 

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Iridescent Ferrofluid: the latest formulation of colloidal ferromagnetic liquid in a specially prepared water-alcohol suspension display cell. The interplay between magnetic force and surface tension allows for the strange shape shifting from rounded blobs to starfish like spikes. As with all ferrofluids on the market, the chemical formulation is kept a trade secret-- and the coloring on this version is spectacular!

Magnetic Chaotic Pendulum

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From Amazon: BUY NOW: Color Magnetic Viewing Film

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Magnetic Chaotic Pendulum: this beautifully designed “perpetual pendulum” has been in my collection since 1990. The ufo shaped bob has a magnet embedded in it and the base has a battery and simple coil circuit that gives the bob a tiny push each time it swings through the center. An array of 5 permanent magnets are also hidden in the wood base (wait for reveal with magnetic viewing film) and these magnets produce the chaotic motion- not random, but very sensitive to slight differences in initial launch conditions. A clever design feature connects the pendulum to the top mount with yet another magnet, and this sharp contact point greatly reduces friction such that a fresh 9V battery in the base will keep the pendulum in motion for a couple months.