Foscarini Introduces the Magneto Lamp Adjustable lamps often have a light source that swivels on an arm or nods on a stem. Magneto, a new lamp by Foscarini, works more like a squirrel skittering on a tree trunk. Its LED-illuminated head is attached to a rod by a spherical magnet that moves up and down and spins around with a gentle push of the hand. "The magnetic ball affords the utmost versatility of angling and movement," focusing light in any direction, said the designer, Giulio Iacchetti, of Milan. The lamp, which is about $600 for the 16 5/8-inch-high table version, and $760 for the 48 7/8-inch-high floor version, will be available on May 10 in the United States, at Foscarini, 17 Greene Street (Grand Street); (212) 247-2218; foscarini.com.