Coloured X-ray of a barn owl. A physicist has used X-ray to create an extraordinary collection of artwork. Arie van't Riets pictures reveal birds, fish, monkeys and flowers in an incredible new light. The 66-year-old, from Bathmen in the Netherlands, began X-raying flowers as a means to teach radiographers and physicians how the machine worked. But after adding a bit of colour to the pictures, the retired medical physicist realised the potential for an exciting new collection of art. (Photo by Arie van't Riet/Barcroft Media)

Fan Bing Bing, Concha de Plata (Silver Shell) award winnerfor best actress for the feature film “I Am Not Madame Bovary” speaks on her telephone during the awards ceremony at the San Sebastian Film Festival, September 24, 2016, in San Sebastian, northern Spain. (Photo by Vincent West/Reuters)

A bull hits a reveller during the first running of the bulls of the San Fermin festival in Pamplona, Spain, July 7, 2018. Each day at 8am hundreds of people race with six bulls, charging along a winding, 848.6-metre (more than half a mile) course through narrow streets to the city's bull ring, where the animals are killed in a bullfight or corrida, during this festival dating back to medieval times and also featuring religious processions, folk dancing, concerts and round-the-clock drinking. (Photo by Vincent West/Reuters)

High-rise buildings are partly covered by heavy fog at Hong Kong's Victoria Harbour Monday, March 20, 2017. Fog blanketing Hong Kong is common in springtime and may greatly affect shipping and aviation. (Photo by Vincent Yu/AP Photo)

A transparent van is displayed by a vendor for safety devices at the IAA Auto Show in Frankfurt, Germany, Tuesday, September 10, 2019. (Photo by Michael Probst/AP Photo)

The Belgian rider Wout van Aert crashes during an ascent on the 11th stage of the Tour de France in Col de Néronne, France on July 10, 2024. (Photo by Anne-Christine Poujoulat/AFP Photo)

Models are seen backstage prior to the Walter Van Beirendonck Menswear Spring/Summer 2024 show as part of Paris Fashion Week on June 21, 2023 in Paris, France. (Photo by Francois Durand/Getty Images)

Rikkie Valerie Kolle, a transgender woman who was crowned Miss Netherlands, puts on her makeup in Voorthuizen, Netherlands on July 12, 2023. (Photo by Piroschka van de Wouw/Reuters)