The beauty of a place; its social or political importance; inspiring natural phenomena—these are all reasons that artists have turned to landscape painting. In the 1800s, however, painters began to push further, exploring atmosphere as a way to convey emotion. In this exhibition, which uses sophisticated technology to reveal complicated painting techniques, an invisible element—air—is the focus. Artworks by Joseph Mallord William Turner, John Constable, and James McNeill Whistler are gathered here, as well as works by Honoré Daumier, Charles Meryon, and Auguste Louis Lepère, among others. —Elena Clavarino