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.
Contact johnfptak at gmail dot com
JF Ptak Science Books Quick Post
There have been a number of posts on this blog concerning 19th century comparative tables of river lengths, mountain heights, lake sizes, and so on. The example below is an odd one, found deep in Jean Pierre Ranbosson’s Astronomy, published in London in 1875,–a funny little chart on the comparative lengths of rivers, very unusual in that it is printed white-on-black.
