I was discussing how to safely view a solar eclipse Wednesday and the subject of a camera obscura came up, so here is some info on the subject.
First, the Wiki page…
And an video from National Geographic on how a room-sized one can be made…
I was discussing how to safely view a solar eclipse Wednesday and the subject of a camera obscura came up, so here is some info on the subject.
First, the Wiki page…
And an video from National Geographic on how a room-sized one can be made…