Pardon the cliche, but it's one of the holiest of Holy Grails of technology: Wireless power. And while early lab experiments have been able to "beam" electricity a few feet to power a light bulb, the day when our laptops and cell phones can charge without having to plug them in to a wall socket still seems decades in the future.
Nokia, however, has taken another baby step in that direction with the invention of a cell phone that recharges itself using a unique system: It harvests ambient radio waves from the air, and turns that energy into usable power. Enough, at least, to keep a cell phone from running out of juice.
Palm has something similar already in place with the Pre. Its not exactly wireless but there aren't any wires involved, you just place the phone on the dock and it charges via induction coils generated.
Palm has something similar already in place with the Pre. Its not exactly wireless but there aren't any wires involved, you just place the phone on the dock and it charges via induction coils generated.
