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Friedrich Wilhelm Heinrich Alexander von Humboldt was a Prussian geographer, naturalist, and explorer, and the younger brother of the Prussian minister, philosopher and linguist Wilhelm von Humboldt (1767–1835). Humboldt's quantitative work on botanical geography laid the foundation for the field of biogeography.<br/><br/> Between 1799 and 1804, Humboldt travelled extensively in Latin America, exploring and describing it for the first time from a modern scientific point of view. His description of the journey was written up and published in an enormous set of volumes over 21 years. He was one of the first to propose that the lands bordering the Atlantic Ocean were once joined (South America and Africa in particular).<br/><br/> Later, his five-volume work, Kosmos (1845), attempted to unify the various branches of scientific knowledge. Humboldt supported and worked with other scientists, including Joseph-Louis Gay-Lussac, Justus von Liebig, Louis Agassiz, Matthew Fontaine Maury, Georg von Neumayer, and most notably, Aimé Bonpland, with whom he conducted much of his scientific exploration.
Baron Jöns Jacob Berzelius (20 August 1779 – 7 August 1848), was a Swedish chemist. Berzelius is considered, along with Robert Boyle, John Dalton, and Antoine Lavoisier, to be one of the founders of modern chemistry.<br/><br/> Berzelius began his career as a physician but his researches in physical chemistry were of lasting significance in the development of the subject. He is especially noted for his determination of atomic weights; his experiments led to a more complete depiction of the principles of stoichiometry, or the field of chemical combining proportions. In 1803 Berzelius demonstrated the power of an electrochemical cell to decompose chemicals into pairs of electrically opposite constituents.
Abraham Gottlob Werner (25 September 1749 – 30 June 1817) was a German geologist who set out an early theory about the stratification of the Earth's crust and propounded a history of the Earth that came to be known as Neptunism. While most tenets of Neptunism were eventually set aside, Werner is remembered for his demonstration of chronological succession in rocks; for the zeal with which he infused his pupils; and for the impulse he thereby gave to the study of geology. He has been called the 'father of German geology'.
Jean Léopold Nicolas Frédéric, Baron Cuvier (23 August 1769 – 13 May 1832), known as Georges Cuvier, was a French naturalist and zoologist, sometimes referred to as the 'father of paleontology'.<br/><br/> Cuvier was a major figure in natural sciences research in the early 19th century and was instrumental in establishing the fields of comparative anatomy and paleontology through his work in comparing living animals with fossils.
Carl Linnaeus, also known after his ennoblement as Carl von Linné, was a Swedish botanist, physician, and zoologist, who laid the foundations for the modern biological naming scheme of binomial nomenclature.<br/><br/> He is known as the father of modern taxonomy, and is also considered one of the fathers of modern ecology.
Sir Isaac Newton PRS MP (25 December 1642 – 20 March 1726) was an English physicist and mathematician (described in his own day as a 'natural philosopher') who is widely recognised as one of the most influential scientists of all time and as a key figure in the scientific revolution.<br/><br/> His book Philosophiæ Naturalis Principia Mathematica ('Mathematical Principles of Natural Philosophy'), first published in 1687, laid the foundations for classical mechanics. Newton made seminal contributions to optics, and he shares credit with Gottfried Leibniz for the development of calculus.
Johannes Kepler (December 27, 1571 – November 15, 1630) was a German mathematician, astronomer, and astrologer. A key figure in the 17th century scientific revolution, he is best known for his laws of planetary motion, based on his works Astronomia nova, Harmonices Mundi, and Epitome of Copernican Astronomy. These works also provided one of the foundations for Isaac Newton's theory of universal gravitation.<br/><br/> During his career, Kepler was a mathematics teacher at a seminary school in Graz, Austria, where he became an associate of Prince Hans Ulrich von Eggenberg. Later he became an assistant to astronomer Tycho Brahe, and eventually the imperial mathematician to Emperor Rudolf II and his two successors Matthias and Ferdinand II. He was also a mathematics teacher in Linz, Austria, and an adviser to General Wallenstein. Additionally, he did fundamental work in the field of optics, invented an improved version of the refracting telescope (the Keplerian Telescope), and mentioned the telescopic discoveries of his contemporary Galileo Galilei.
Aristotle (Greek: Ἀριστοτέλης, Aristotélēs) (384 BCE – 322 BCE) was a Greek philosopher, a student of Plato and teacher of Alexander the Great.<br/><br/> His writings cover many subjects, including physics, metaphysics, poetry, theatre, music, logic, rhetoric, linguistics, politics, government, ethics, biology, and zoology. Together with Plato and Socrates (Plato's teacher), Aristotle is one of the most important founding figures in Western philosophy.<br/><br/> Aristotle's writings were the first to create a comprehensive system of Western philosophy, encompassing morality and aesthetics, logic and science, politics and metaphysics.
Abu Yahya Zakariya' ibn Muhammad al-Qazwini (أبو يحيئ زكريا بن محمد القزويني) (born 1203 - died 1283), was a Persian physician, astronomer, geographer and proto-science fiction writer.<br/><br/> Born in the Persian town of Qazvin, he is descended from Anas ibn Malik, Zakariya' ibn Muhammad al-Qazwini served as legal expert and judge (qadhi) in several localities in Persia and at Baghdad. He travelled around in Mesopotamia and Syria, and finally entered the circle patronized by the governor of Baghdad, ‘Ata-Malik Juwayni (d. 1283 CE).<br/><br/> It was to the latter that al-Qazwini dedicated his famous Arabic-language cosmography titled 'Aja'ib al-makhluqat wa-ghara'ib al-mawjudat عجائب المخلوقات و غرائب الموجودات ('Marvels of Creatures and Strange Things Existing'). This treatise, frequently illustrated, was immensely popular and is preserved today in many copies. It was translated into Persian and Turkish.<br/><br/> Qazwini was also well-known for his geographical dictionary, Athar al-bilad wa-akhbar al-‘ibad اثار البلاد واخبار العباد ('Monument of Places and History of God's Bondsmen'). Both of these treatises reflect extensive reading and learning in a wide range of disciplines.<br/><br/> Al-Qazwini also wrote a futuristic proto-science fiction Arabic tale entitled Awaj bin Anfaq, about a man who travelled to Earth from a distant planet.<br/><br/> Al-Qazwini mentioned how alchemists dubbed 'swindlers' claimed to have carried out the transmutation of metals into gold, al-Qazwini states: 'They ruined the development of the science of chemistry, by fooling powerful rulers such as Imad ad-Din Zengi and thus many scholars and various colleagues turned against alchemy thus resulting in the isolation of the science'.
Georges-Louis Leclerc, Comte de Buffon ( 7 September 1707 – 16 April 1788) was a French naturalist, mathematician, cosmologist, and encyclopedic author.<br/><br/> His works influenced the next two generations of naturalists, including Jean-Baptiste Lamarck and Georges Cuvier. Buffon published thirty-six quarto volumes of his <i>Histoire naturelle</i> during his lifetime; with additional volumes based on his notes and further research being published in the two decades following his death.<br/><br/> Buffon held the position of <i>intendant</i> (director) at the Jardin du Roi, now called the Jardin des Plantes; it is the French equivalent of Kew Gardens.
Philipp Franz Balthasar von Siebold (February 17, 1796 – October 18, 1866) was a German physician and traveller. He was the first European to teach Western medicine in Japan. He obtained recognition for his study of Japanese flora and fauna. He arrived at Dejima Island in 1823 and stayed in Japan until 1829 when he was expelled for obtaining maps of parts of the country, and act forbidden by the Tokugawa administration.
Abu Yahya Zakariya' ibn Muhammad al-Qazwini (أبو يحيئ زكريا بن محمد القزويني) (born 1203 - died 1283), was a Persian physician, astronomer, geographer and proto-science fiction writer.<br/><br/> Born in the Persian town of Qazvin, he is descended from Anas ibn Malik, Zakariya' ibn Muhammad al-Qazwini served as legal expert and judge (qadhi) in several localities in Persia and at Baghdad. He travelled around in Mesopotamia and Syria, and finally entered the circle patronized by the governor of Baghdad, ‘Ata-Malik Juwayni (d. 1283 CE).<br/><br/> It was to the latter that al-Qazwini dedicated his famous Arabic-language cosmography titled 'Aja'ib al-makhluqat wa-ghara'ib al-mawjudat عجائب المخلوقات و غرائب الموجودات ('Marvels of Creatures and Strange Things Existing'). This treatise, frequently illustrated, was immensely popular and is preserved today in many copies. It was translated into Persian and Turkish.<br/><br/> Qazwini was also well-known for his geographical dictionary, Athar al-bilad wa-akhbar al-‘ibad اثار البلاد واخبار العباد ('Monument of Places and History of God's Bondsmen'). Both of these treatises reflect extensive reading and learning in a wide range of disciplines.<br/><br/> Al-Qazwini also wrote a futuristic proto-science fiction Arabic tale entitled Awaj bin Anfaq, about a man who travelled to Earth from a distant planet.<br/><br/> Al-Qazwini mentioned how alchemists dubbed 'swindlers' claimed to have carried out the transmutation of metals into gold, al-Qazwini states: 'They ruined the development of the science of chemistry, by fooling powerful rulers such as Imad ad-Din Zengi and thus many scholars and various colleagues turned against alchemy thus resulting in the isolation of the science'.