An image produced on a radiosensitive surface, such as a photographic film, by radiation other than visible light, especially by x-rays passed through an object or by photographing a fluoroscopic image.

• 射线照片非可见光在对辐射敏感的表面（如摄影胶片）上留下的图像，如通过一个物体的x射线或对一个荧光图像的摄影