Margot Quan Knight finds something worth pausing for—or more specifically, a moment worth pausing. In “Intervals,” a show of new photographs at Randall Scott Gallery, the photographer captures those instances in which time seems to crawl. She might depict a fleeting sense of urgency, as with the glass suspended midtopple in Spilt Milk, or merely an object in motion that catches the eye, such as the sheet that hovers in midair in Shelter. Knight cites psychologist Mihaly Csikszentmihalyi’s theory of “flow,” in which an individual’s sense of time is skewed by experience. (Anyone who’s ever been in a car accident knows the feeling.) As in Shelter, it isn’t clear from the depictions whether the objects in motion are coming or going. The viewer’s place in Knight’s transactions is murkier still: Her perfectly readable photographs send a confusing message about what, exactly, she deems significant. The exhibition is on view from 11 a.m. to 6 p.m. Wednesdays through Saturdays, to Saturday, Jan. 12, at Randall Scott Gallery, 1326 14th St. NW. Free. (202) 332-0806.