For decades, a mysterious black stain has been spreading across the face of an anonymous woman in Australia. She is the subject of a painting by Edgar Degas, the French Impressionist painter, and since the 1920s, the oil paints in her portrait have gradually faded, revealing the hints of another, hidden portrait underneath.
Until recently, attempts to capture the image underlying “Portrait of a Woman” with conventional X-ray and infrared techniques have only yielded the shadowy outline of another woman. In a study published on Thursday, however, a team of researchers reports that they have revealed the hidden layer underneath the painting, which hangs in the National Gallery of Victoria in Australia, at a very high resolution. It seems to be a portrait of Emma Dobigny, a model who was a favored subject of Degas.
“The fact that you get to see the lower image in such incredible detail is really exciting,” said Joris Dik, a professor of materials in art and archaeology at Delft University of Technology, who was not involved in the research.
To get their high-resolution image, the research team used a type of particle accelerator called a synchrotron. Synchrotrons are sources of extremely high-energy light. They work by directing that light, which is a million times brighter than the sun, into an X-ray beam that’s one tenth the diameter of a human hair.
8-6-2021 (August 6, 2021) is the Snakiest day of the year and it’s also this year’s CircuitPython Day! The day highlights all things CircuitPython and Python on Hardware. See you there!
Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.