In computing, “the cloud” is just a metaphor. In the art of Yuriko Yamaguchi, it becomes compellingly tangible. The Osaka-born Yamaguchi, who’s been working in the U.S. since the 1970s and who is now based in Vienna, Va., uses steel, copper, and brass wire along with small pieces of hand-cast resin to create sprawling modular networks that suggest communications networks with an uncanny lightness. Yamaguchi’s more recent work—a series she calls “Cloud”—seamlessly blends art with biology. One piece, “Coming,” features two nodes linked by a long, thin connector—a virtual axon and dendrite, those carriers of electric impulses that power the human nervous system. Yamaguchi’s pièce de résistance, however is titled, simply, “Cloud.” Up close, “Cloud” is an organic but orderly agglomeration of cast resin and wire. Viewed from a distance, however, its four distinct parts are harmonious, forming an utterly convincing cloud, palpable but evanescent. Like the computing cloud, she sees her art as both “artificial” and “able to multiply endlessly.” The exhibition is on view Tuesdays through Saturdays 10 a.m. to 5 p.m. at Adamson Gallery, 1515 14th St. NW, Suite 301. Free. (202) 232-0707. adamsongallery.com.