radio frequency

For electric items that are too mobile to be connected by wire, like – to pull a completely random example out of the air – a car traveling down the highway, the idea of wireless power transmission has a lot of appeal. Several different schemes have been considered, including magnetic ...

Salt water as fuel? Not exactly, but kinda. John Kanzius discovered that by focusing certain radio-frequencies on a test tube of salt water, he could ignite the contents, which would them become hot enough to melt the test tube. The process has been independently verified by Rustum Roy, a Penn ...