Flashes of BrillianceToday it's routine to take photos from an airplane window, use a camera under the sea, or gaze at an X ray. But the innovations more than a century ago that made such things possible were incredible and sometimes dangerous, and the innovators often memorable eccentrics. In this absorbing mix of science, art, and social history, Anika Burgess describes early aerial photography experiments with balloons, kites, and pigeons; reveals how photographers