Capturing the art and science of light! ✈️🌈✨ In "Iridescent Contrail", an airplane flying high above dynamic atmospheric conditions creates a vivid iridescent contrail. Sunlight diffracts off water droplets formed by the aircraft's pressure drop, splitting light into a brilliant spectrum of color. To celebrate #WorldPhotographyDay, Optics & Photonics News is looking for your best shots showcasing the beauty of optics, light, and imaging! Whether it's atmospheric phenomena, lab experiments, or natural light patterns, we want to see your work. 📸 Submit your best images to the 21st Annual OPN Photo Contest by 15 September with the link in our bio. #WorldPhotographyWeek2026 #PhotographyContest #Optics