With the help of a particle accelerator, a 19th-century painting is finally giving up its secrets.
Famed French impressionist Edgar Degas painted “Portrait of a Woman” sometime in the late 1870s, but since 1922, degraded oils on the canvas have revealed tantalizing hints of another woman concealed beneath the visible image. The outlines are too faint to make out clearly with the naked eye, however.
Particle Physics Meets Art
Using a synchrotron, a type of particle accelerator similar to