I am interested in photography, the science of creating durable images by recording light on photographic film.
I've recently become interested in photography too. However I am a total beginner and I only have a digital camera which seem to clash with the definition you just gave me lol.
I like oldschool film photography. A lens is used to focus the light into a real image on the light-sensitive surface inside the camera.
Ugh I need to get some more lens for camera but they're so expensive and there are so many options. 
I bet your camera has an electronic image sensor which charges each pixel and process the digital image for display or processing.
You might be right. I have no idea. I think it is a mirrorless, that's all I know.
Digital cameras capture photographs in digital memory. They are still pretty new, only released like 20 years ago.