The MOVA Rotating Silver & Black Metallic 4.5-Inch Diameter Desk Globe gleams with striking ebony oceans and metallic silver landmasses. Inspired by the earth itself this unique globe is one of the world`s most advanced. It rotates silently without t he need for batteries or power cords. Create a tasteful display in your home or office with the included 3-fingered acrylic base.The MOVA globe is powered only by natural light and the force of the earth`s magnetic field. It contains an inner globe t hat rotates within the fixed acrylic outer shell. The space between them is filled with a clear non-toxic fluid that provides buoyancy and prevents contact between the two globes. The inner globe floating and turning in a virtually frictionless envir onment is akin to the earth itself. A highly efficient drive mechanism within the inner globe ensures rotation in virtually any ambient light. Solar cells harness that energy and a magnetic element reacts to the earth`s magnetic field in the manner o f a common compass to provide torque.The optical properties of both the outer shell and fluid have been carefully chosen to magnify features on the inner globe. As a result the outer globe appears to rotate despite resting on the stand in quiet defia nce of commonly held ideas about the laws of friction. This globe measures 7.25 inches high with the display stand. Beautiful and arresting it will form a meditative point of focus for any room.See our Globe FAQs