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Richard Dana, a former economist and Soviet affairs expert-turned-Bethesda-based artist, creates large-scale digital pigment prints that pulsate with energy. Dana takes black-and-white drawings or collages, scans them into a computer, then manipulates them beyond recognition. The result: brightly colored, Op-art abstractions that live up to the exhibit’s name, “Reverberation.” Some of Dana’s works suggest overlapping ripples on a pool, or the curvaceous surfaces of gently melting ice; others call to mind brainteaser illusions or acoustic wave patterns. One even communicates heat: “Hearth,” which features an area limned in fireplace red. Trying to figure out what the source material originally looked like is a mind puzzle of another sort. Work of this sort is not exactly new (Colby Caldwell was doing something similar a dozen years ago), but it does offer a bracing sensory jolt. The exhibition is on view Mondays through Fridays 8 a.m. to 7 p.m. and Saturdays 9 a.m. to 4 p.m. to March 11 at Heurich Gallery, 505 9th St. NW. Free. (202) 223-1626. downtowndc.org/go/heurich-gallery.