Camera obscura

[christopher575]

Camera obscura, originally uploaded by christopher575.

This is a double image of a yellow car parked on the street below my
apartment. I saw the mailman walk by right after I snapped the photo.

Comments

[theropod.livejournal.com]

I did something like this in my dorm room once. I had foil on the windows anyway, because I was the kind of college kid who puts foil on the windows. Then, there was an astronomy lab where we were supposed to use trigonometry to measure the size of the sun based on the size of image it projects through a pinhole. Taking advantage of the circumstances I already had set up, I poked a pinhole in the foil, and acquired a far more accurate result than my classmates, who used shoeboxes.