Luis Hernan was always curious about how wireless technologies like radio are transmitted through the air. So after finishing up his studies in architecture, computer science, and design, Hernan decided to research these invisible signals through a PhD at Newcastle University. Hernan set up a system that turned the wireless signals around him into colourful, ghostlike images using long-exposure photography, allowing people to see the strength of the signals around them. (Photo by Luis Hernan)

Amateur honorable mention | Common raven at Banff National Park in Alberta, Canada. (Photo by Colleen Gara/Audubon Photography Awards)

A man takes a picture of models as they pose next to Cosmis Racing Wheels products during the 2016 Moscow International Auto Salon in Moscow, Russia, August 26, 2016. (Photo by Sergei Karpukhin/Reuters)

American actress Kiernan Shipka poses with “May flowers” in Venice, Italy in the last decade of May 2022. (Photo by kiernanshipka/Instagram)

Australian model Shanina Shaik arrives to attend the Givenchy Menswear Spring/Summer 2023 show as part of Paris Fashion Week, in Paris, on June 22, 2022. (Photo by AFP Photo/Stringer)

Ingrid Landmark Tandrevold of Norway shoots during the women's 10 km pursuit race at the Biathlon World Cup in Hochfilzen, Austria, Saturday, December 19, 2020. (Photo by Matthias Schrader/AP Photo)

Nikki Laird poses ahead of the Australian Beach Volleyball Tour at Coolangatta Beach on March 12, 2021 in Coolangatta, Australia. (Photo by Matt Roberts/Getty Images)

Cardi B attends the Fanatics Super Bowl Party at College Football Hall of Fame on February 2, 2019 in Atlanta, Georgia. (Photo by Shareif Ziyadat/WireImage)