A Daily History of Holes, Dots, Lines, Science, History, Math, Physics, Art, the Unintentional Absurd, Architecture, Maps, Data Visualization, Blank and Missing Things, and so on. |1.6 million words, 7500 images, 4.9 million hits| Press & appearances in The Times, Le Figaro, Mensa, The Economist, The Guardian, Discovery News, Slate, Le Monde, Sci American Blogs, Le Pont, and many othr places… 5000+ total posts since 2008.
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JF Ptak Science Books Quick Post
I found this ad on the back page of the last issue of the Scientific American before that of December 29, 1877, which carries the announcement and description of the invention by Thomas Edison of the groundbreaking “talking phonograph”. In any event, the saw image is beautiful:
And the full ad:
