This tessellation uses equilateral triangles and regular hexagons with unit edge length, and squares with twice that edge length.
An Unusual Tessellation Featuring Regular Hexagons, Equilateral Triangles, and Squares
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Daily Archives: 10 April 2013
The Pegasus Crude Oil Pipeline
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I live quite near Mayflower, Arkansas, site of an oil spill and ongoing cleanup efforts. You’ve probably seen it in the news.
Living in a landlocked state, we did not have “oil spill” on our worry-lists here.
You may live near this pipeline, too, and not even know it. That’s why I’m posting this map (which I did not create, but simply found with a Google image-search). There may be other such pipelines here, as well. Few people notice them — until one breaks.
Richard Feynman, on Respect and Authority
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Mark Twain, on Idiots and Lightning
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[Later edit, in October 2015: a friend of mine questions the authenticity of this quote, but did find a source for Mark Twain saying this: “The trouble ain’t that there is too many fools, but that the lightning ain’t distributed right.” He may well be correct; my friend is an expert at detecting false quotations. If anyone knows of a source for the quote in the pic above, please leave a note about it in a comment to this post.]
Simone de Beauvoir, on Oppression and War
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RobertLovesPi.net 