Little things matter – for want of a semicolon.

Now this is a brilliant post, about the meaning and importance of a particular semicolon. It’s not about Newton, it’s about the 1616 condemnation of Copernicanism, and it’s by Christopher Graney. And it’s brilliant. Did I say it was brilliant?

The Renaissance Mathematicus

The Prof is back. A couple of years back Professor Christopher M. Graney, known to his friends as Chris, wrote a highly informative guest post for The Renaissance Mathematicus defending the honour of Tyco Brahe against his ignorant modern critics. In the mean time The Renaissance Mathematics was able to lure him into coming all the way to Middle Franconia, from the depths of Kentucky, to entertain the locals with a couple of lectures on Early Modern telescope images, Airy discs and how this all applies to Galileo Galilei’s and Simon Marius’ interpretations of the stars that they saw through their telescopes in 1609-10, stirring stuff I can tell you. You can read all about it in his forthcoming book, Setting Aside All Authority: Giovanni Battista Riccioli and the Science against Copernicus in the Age of Galileo (forthcoming March 2015). While he was here he made some videos of The Renaissance Mathematicus waving his arms about and scratching his…

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