JF Ptak Science Books Daily Dose series [Also part of the History of Lines series]
So, Nat'rists observe a flea
hath smaller fleas that on him prey,
And these have smaller fleas to bite 'em, and so on ad infinitum.
--Jonathan Swift, 1733
There are a lot of triangles in this fabulous photo of the construction of the Empire State Building in 1931--a lot. At least fifty--more if you use your imagination or get your pinhole specs out. It is simply an excellent photo in which I'm seeing things of a reducible nature--not in the sense of a Sierpinski triangle/sieve/gasket, obviously--but just a simple exercise along those lines (ha!), experiencing the image by recognizing different sorts of boundaries within it.
[Source: New York Public Library Digital Collections, here.]
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