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 other places… 5000+ total posts since 2008.
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JF Ptak Science Books Quick Post
This fine, geometrical wooden apparatus was made by electrician and physicist Sylvanus P. Thompson (1851-1911)–two metres long, the model was for a demonstration before the Physical Society of London, “illustrat(ing) the propagation of a transverse wave”. The image appeared in Nature, August 12, 1897.
