MetMo Eddy

In 1855, French physicist Léon Foucault discovered that moving a conductor through a magnetic field could generate circulating electrical currents within the metal, creating a force that resists its motion. Nearly two centuries later, MetMo harnesses that electromagnetic force into a palm sized gadget, the Eddy. Built around pure copper and a powerful magnet, the precision-engineered object turns electromagnetic induction into something you can see, feel, and repeat. Send the magnet into motion and invisible eddy currents fight back, slowing its movement in a strangely mesmerizing demonstration of physics at work. Equal parts scientific experiment, kinetic sculpture, and desktop distraction, the Eddy re-engineers a discovery from 1855 for anyone who finds magic in understanding how things work.

Presented by MetMo.

Uncrate's 100-ish favorite things on Amazon

This is our shortcut to the good stuff on Amazon. It's an ongoing Uncrate-vetted list we'll be adding to and subtracting from. It's your field guide to use before wading through Amazon's millions of mediocre listings. It's our handpicked, battle-tested lineup of the clever, the durable, and the legitimately worth buying. The pieces that punch above their price, hold up in the real world, and never miss. In other words: the Amazon aisle curated by someone with taste.