Crystal radio technology has been around for many years. This "bottle radio" take on a crystal radio requires no power source, operates on the power from radio waves, and receives...
Posted by Steve Hobley
Categories: Electronics | 6 Comments
See photons turned into motion with this solar-powered, magnetically levitating electric motor.
Posted by Chris Connors
Categories: Electronics, Science | No Comments
When I first started building homemade instruments, I used a piezoelectric buzzer from RadioShack as a pickup (see http://onestringwillie.com for details). But while it’s cheap and simple, the piezo transducer...
Posted by Meara O'Reilly
Categories: Music | No Comments
About 13 years ago I learned of some military research into a satellite- and missile-defense device that would propel projectiles using Lenz’s law, which governs the direction of electrical current...
Posted by Thomas R Fox
Build a simple pulsejet engine in an afternoon.
Posted by William Gurstelle
Categories: Fun & Games, Science | No Comments
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