section_path: Economy/Science and technology
section_name: Science and technology
paragraph_text: Science and technology
  
  Since the Middle Ages, France has contributed to scientific and technological achievement. In the early 11th century, the French-born Pope Sylvester II reintroduced the abacus and armillary sphere and introduced Arabic numerals and clocks to much of Europe. The University of Paris, founded in the mid-12th century, is still one of the most important academic institutions in the Western world. In the 17th century, mathematician and philosopher René Descartes pioneered rationalism as a method for acquiring scientific knowledge, while Blaise Pascal became famous for his work on probability and fluid mechanics; both were key figures of the Scientific Revolution, which blossomed in Europe during this period. The French Academy of Sciences, founded in the mid-17th century by Louis XIV to encourage and protect French scientific research, was one of the earliest national scientific institutions in history.
  
  The Age of Enlightenment was marked by the work of biologist Buffon, one of the first naturalists to recognize ecological succession, and chemist Lavoisier, who discovered the role of oxygen in combustion. Diderot and D'Alembert published the Encyclopédie, which aimed to give the public access to "useful knowledge" that could be applied to everyday life. The Industrial Revolution of the 19th century saw spectacular scientific developments in France, with Augustin Fresnel founding modern optics, Sadi Carnot laying the foundations of thermodynamics, and Louis Pasteur pioneering microbiology. Other eminent French scientists of the period have their names inscribed on the Eiffel Tower.
  
  Famous French scientists of the 20th century include the mathematician and physicist Henri Poincaré; physicists Henri Becquerel, Pierre and Marie Curie, who remain famous for their work on radioactivity; physicist Paul Langevin; and virologist Luc Montagnier, co-discoverer of HIV AIDS. Hand transplantation was developed in Lyon in 1998 by an international team that included Jean-Michel Dubernard, who afterward performed the first successful double hand transplant. Telesurgery was first performed by French surgeons led by Jacques Marescaux on 7 September 2001 across the Atlantic Ocean. A face transplant was first done on 27 November 2005 by Bernard Devauchelle. France ranked 11th in the 2023 Global Innovation Index, compared to 16th in 2019.