![]() One of these was one of the earliest and most detailed depictions of southern Iraq (his nephew Jean de Thévenot later visited this region). ( Paris, 1663), a collection of translations of voyages of discovery (such as that of Cosmas Indicopleustes). Many of Thévenot's maps of the Middle East were published in his Relations de Divers Voyages Curieux. Other works Photo of the marble floor inlaid into the Amsterdam Town Hall showing Nova Hollandia and Terra Dimensis – the inlayer incorrectly connected the two, while the original Blaeu map shows the gap. It is very likely that these levels were in use in France and elsewhere long before the beginning of the 18th century. It is occasionally argued that these bubble levels did not come into widespread use until the beginning of the 18th century-the earliest surviving examples being from that time-but Adrien Auzout had recommended that the Académie Royale des Sciences take "levels of the Thévenot type" on its expedition to Madagascar in 1666. Within a year of this date, the inventor circulated details of his invention to others, including Robert Hooke in London and Vincenzo Viviani in Florence. ![]() This date can be established from Thévenot's correspondence with scientist Christiaan Huygens. Thévenot invented the spirit level (or bubble level) some time before 2 February 1661, which he filled with alcohol and mounted on a stone ruler fitted with a viewing lens. The "we" referred to two of Thévenot's protégés, the Dutchman Jan Swammerdam (1637–1680) and the Dane Niels Stensen ("Steno") (1638–86). We took the opportunity provided by the cold of recent months and applied ourselves to dissections and to investigating the generation of animals (Thévenot 1665). In April 1665, he wrote to his friend Christiaan Huygens (1629–95), a Dutch mathematician and astronomer: Thévenot can be credited in sponsoring a scientific study that contributed to the discovery of the nature and mechanism of fertilization both in humans and in animals in general. He proposed the use of lemon juice as a cure for various maladies, as well as syrup of ipecac as a remedy for dysentery. Between 16 Thévenot conducted experiments on capillarity and the siphon. Thévenot studied astronomy, physics, medicine, and magnetism, and demonstrated in the 1660s the possibility that atmospheric pulsations had something to do with human and animal respiration. After the death of Pope Innocent X, he participated in the subsequent conclave. He also served as ambassador to Genoa in 1647 and then to Rome in the 1650s. He was wealthy and well-connected, in 1684 becoming the Royal Librarian to King Louis XIV of France. Thévenot was an amateur scientist and a patron of many scientists and mathematicians, maintaining correspondence with figures like Jan Swammerdam, whom he encouraged to tackle the origin of organisms. 1637), an avocat at the Parlement of Paris, and probably a Huguenot (given the Old Testament name). Thévenot's baptismal name was Nicolas, Melchisédech being added as the second (confirmation) name, almost certainly in honour of his maternal grandfather, Melchisédech Garnier (d. He was reputed to speak English, Greek, Latin, Hebrew, and several oriental languages, including Arabic and Turkish. Thévenot came from a family of royal office holders (nobles of the robe), which partly explains his wealth. He also influenced the founding of the Académie Royale des Sciences (the French Academy of Sciences). The book popularized the breaststroke (see History of swimming) he was inducted into the International Swimming Hall of Fame in 1990. ![]() He was the inventor of the spirit level and is also famous for his popular posthumously published 1696 book The Art of Swimming, one of the first books on the subject and widely read during the 18th century ( Benjamin Franklin, an avid swimmer in his youth, is known to have read it). 1620 – 29 October 1692) was a French author, scientist, traveller, cartographer, orientalist, inventor, and diplomat. Scientist, traveller, cartographer, orientalist, inventor, diplomat ![]()
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