Rudolf II-Habsburg heir, Holy Roman Emperor, king of Hungary, Germany, and the Romans-is one of history's great characters, and yet he remains largely an unknown figure. His reign (1576-1612) roughly mirrored that of Queen Elizabeth I of England, and while her famous court is widely recognized as a sixteenth century Who's Who, Rudolf 's collection of mathematicians, alchemists, artists, philosophers and astronomers-among them the greatest and most subversive minds of the time-was no less prestigious and perhaps even more influential. Driven to understand the deepest secrets of nature and the riddle of existence, Rudolf invited to his court an endless stream of genius-Danish astronomer Tycho Brahe, German mathematician Johannes Kepler, English magus John Dee, Francis Bacon, and mannerist painter Giuseppe Archimboldo among many others. Prague became the artistic and scientific center of the known world-an island of intellectual tolerance between Catholicism, Protestantism, and Islam. Combining the wonders and architectural beauty of sixteenth century Prague with the larger than-life characters of Rudolf 's court, Peter Marshall provides an exciting new perspective on the pivotal moment of transition between medieval and modern, when the foundation was laid for the Scientific Revolution and the Enlightenment.

A compulsively readable account of the most mysterious manuscript in the world, one that has stumped the world’s greatest scholars and codebreakers. The Voynich Manuscript, a mysterious tome discovered in 1912 by the English book dealer Wilfrid Michael Voynich, has puzzled scholars for a century. A small six inches by nine inches, but over two hundred pages long, with odd illustrations of plants, astrological diagrams, and naked women, it is written in so indecipherable a language and contains so complicated a code that mathematicians, book collectors, linguists, and historians alike have yet to solve the mysteries contained within. However, in The Friar and the Cipher, the acclaimed bibliophiles and historians Lawrence and Nancy Goldstone describe, in fascinating detail, the theory that Roger Bacon, the noted thirteenth-century, pre-Copernican astronomer, was its author and that the perplexing alphabet was written in his hand. Along the way, they explain the many proposed solutions that scholars have put forth and the myriad attempts at labeling the manuscript's content, from Latin or Greek shorthand to Arabic numerals to ancient Ukrainian to a recipe for the elixir of life to good old-fashioned gibberish. As we journey across centuries, languages, and countries, we meet a cast of impassioned characters and case-crackers, including, of course, Bacon, whose own personal scientific contributions, Voynich author or not, were literally and figuratively astronomical. The Friar and the Cipher is a wonderfully entertaining and historically wide-ranging book that is one part The Code Book, one part Possession, and one part The Da Vinci Code and will appeal to bibliophiles and laypeople alike.

The history of technology, Anthony F. C. Wallace contends, must be imagined and investigated within a broader history of society. In these insightful essays, Wallace offers a multigenerational examination of the underlying social forces and everyday settings impelling and enabling early industrial innovation.øøø The gradual development of the steam engine is illuminated through an examination of the far-reaching but unintentional role played by the British royal ordnance and naval establishments. Wallace shows how the efforts of three generations of the Darby family improved iron production. Finally, the sources of failure in industrial innovation are illustrated through the example of deep-shaft coal mining in nineteenth-century Pennsylvania, which went bankrupt because of inadequately financed operators who ignored standard safety procedures.