“I meet him almost daily in the Calle near my home or at the Traghetto,” Peggy Guggenheim wrote of the painter Edmondo Bacci. “I never get to know him any better. . . . But his paintings, that is another matter. I know them. They are children of today. They are dynamic. They are the atomic bomb on canvas.” A Venetian native, Bacci was most active during the 1950s, when he was a proponent of Spatialism, a movement that explored the relationship between light, movement, art, and technology. His best known series, “Avvenimenti,” is extraordinary. Bacci’s canvases feature ruptured spatial plans, circular brushstrokes, and a dizzying command of color theory. Just a bridge away from Bacci’s former home, 80 works from that fruitful decade are on view. —Elena Clavarino