Calculation

Being a human activity, calculation has a history, even if its operations yield "facts" apparently true in any context. One plus one might always be two, but the methods to arrive at such results, not to mention what they might mean, are another matter. Recent histories involving calculation on this blog include Staffan Müller-Wille and … Continue reading Calculation

Reading and (Re-)​Classifying Canonical Instructions of the Past: Commentaries on ‘The Nine Chapters on Mathematical Procedures’ from the 3rd to the 13th Centuries

The earliest extant Chinese mathematical writings include two types of components of particular interest for our discussion on manuals and handbooks. On the one hand, there are mathematical problems that often evoke tasks carried out by officials working in the imperial bureaucracy. On the other hand, there are mathematical “procedures,” or “algorithms” in today’s parlance, … Continue reading Reading and (Re-)​Classifying Canonical Instructions of the Past: Commentaries on ‘The Nine Chapters on Mathematical Procedures’ from the 3rd to the 13th Centuries

Spinning the Risk: ‘The Effects of Nuclear Weapons’ Handbook

The Effects of Nuclear Weapons was by far the most popular handbook of nuclear defense during the Cold War. Adapted from an original publication of the Los Alamos Scientific Laboratory (1950),[1] the handbook was amended and made commercially available for popular use (1957),[2] revised (1962),[3] reprinted (1964),[4] expanded (1977),[5] and even illicitly translated into Russian … Continue reading Spinning the Risk: ‘The Effects of Nuclear Weapons’ Handbook

Learning How to Construct the Unknown: The Practice of Risk in Early North American Insurance Manuals

Selling insurance against possibly harmful future events became popular among Americans in the late eighteenth century. Among the reasons that more and more people in the former British colonies were drawn to conduct this kind of business was that acting as an insurer required neither formal training nor special equipment. Basically, anyone who was literate … Continue reading Learning How to Construct the Unknown: The Practice of Risk in Early North American Insurance Manuals

Handbooks of the Mind into Ready Reckoners in Print: The Story of the ‘Encuvati’ in the Nineteenth Century

The Encuvati was the quintessential Tamil multiplication table book, used in precolonial South Indian schools. Nowadays they are available as palm leaf manuscripts, collected from different geographical locations of the Tamil-speaking region of South India and stored in various manuscript libraries there as well as in other collections inside and outside the country. But why … Continue reading Handbooks of the Mind into Ready Reckoners in Print: The Story of the ‘Encuvati’ in the Nineteenth Century

Punnett Squares and Hybrid Crosses: How Mendelians Learned Their Trade by the Book

In 1901, Erich von Tschermak (1871–1962) produced a critical edition of Gregor Mendel’s (1822–1884) paper on “Versuche über Pflanzen­hybriden”; and in the same year, William Bateson (1861–1926) submitted an English translation entitled “Experiments in Plant Hybridization” to the readers of the Journal of the Royal Horticultural Society.[1] Tschermak’s edition appeared as volume 121 of the … Continue reading Punnett Squares and Hybrid Crosses: How Mendelians Learned Their Trade by the Book