a few windows shot over the past fifty years ranging from 35mm to 8x10 and some digital thrown in.
A little note on the third image, first color photo. Most folks wouldn’t know what this is and would never see one especially from this viewpoint.
I was on an assignment shooting for a magazine at the new Spallation Neutron Source, sub atomic particle accelerator. I was inside a NEW, NEVER USED hot cell. Hot cells are totally contained and isolated laboratories or rooms where highly radioactive materials are handled using robotic devices. (White devices on the left and right). There was no contamination because it had never been used so I could enter it safely.
The wall of the cell are 3 feet of high density concrete and sometimes more and the window is many layers of lead cerium glass with a liquid like mineral oil in between each layer. There may be a dozen layers or more of thick high density glass that stays transparent when exposed to high levels of radiation.
The refractive index of this 3’ thick window is so great that you can put your head against the outside wall and see within an inch of the inside wall. Often the light is bent to such a degree that the inner windows take on a great deal of barrel distortion.
In the mid 70’s I worked for the US DOE at a national lab and often had to photograph experiments through these windows.