scientific instruments
David Blaesing was a German mathematician and astronomer.
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Sir John Frederick William Herschel, 1st Baronet was a British astronomer and son of the Uranus discoverer Wilhelm Herschel. He is credited with the first double star and nebula catalogues of the southern starry sky, which he observed during a five-year stay near Cape Town.
Galileo Galilei was an Italian naturalist, physicist, mechanic, astronomer, philosopher, and mathematician.
Using his own improved telescopes, Galileo Galilei observed the movements of the Moon, Earth's satellites, and the stars, making several breakthrough discoveries in astronomy. He was the first to see craters on the Moon, discovered sunspots and the rings of Saturn, and traced the phases of Venus. Galileo was a consistent and convinced supporter of the teachings of Copernicus and the heliocentric system of the world, for which he was subjected to the trial of the Inquisition.
Galileo is considered the founder of experimental and theoretical physics. He is also one of the founders of the principle of relativity in classical mechanics. Overall, the scientist had such a significant impact on the science of his time that he cannot be overemphasized.
Georg Galgemair was a German mathematician and astrologer.
He was born into the family of the burgomaster of Donauwörth, was a pupil of Philip Apian, and then a master of mathematics at the University of Tübingen in 1585. After completing his studies, Galgemair began teaching at Lauingen in 1588.
His work on proportional circles led to the development of gnomonics. In the history of science, Galgemair is known for his works on mathematical instruments. As a calendar maker, he succeeded in 1606 in obtaining an imperial privilege for his calendars.
Georg Brentel the Younger was a German draftsman, engraver, and author of works on sundials and instrumentation.
He was the son of the cartographer Hans Brentel (1532-1614) and nephew of the armorial artist Georg Brentel the Elder (1525-1610). He always showed an interest in mathematics and astronomy, writing papers on these subjects and making instruments.
Brentel was particularly fond of designing sundials, and wrote several instructions for assembling various types of sundials - round and cubic, cross-shaped and heart-shaped.
Jan Bruegel the Younger was a Flemish Baroque painter. He was the son of Jan Brueghel the Elder, and grandson of Pieter Bruegel the Elder, both prominent painters who contributed respectively to the development of Renaissance and Baroque painting in the Habsburg Netherlands. Taking over his father's workshop at an early age, he painted the same subjects as his father in a style which was similar to that of his father. He regularly collaborated with leading Flemish painters of his time.
Athanasius Kircher was a German scholar, inventor, professor of mathematics and oriental studies, and a friar of the Jesuit order.
Kircher knew Greek and Hebrew, did scientific and humanities research in Germany, and was ordained in Mainz in 1628. During the Thirty Years' War he was forced to flee to Rome, where he remained for most of his life, serving as a kind of intellectual and information center for cultural and scientific information drawn not only from European sources but also from an extensive network of Jesuit missionaries. He was particularly interested in ancient Egypt and attempted to decipher hieroglyphics and other riddles. Kircher also compiled A Description of the Chinese Empire (1667), which was long one of the most influential books that shaped the European view of China.
A renowned polymath, Kircher conducted scholarly research in a variety of disciplines, including geography, astronomy, mathematics, languages, medicine, and music. He wrote some 44 books, and more than 2,000 of his manuscripts and letters have survived. He also assembled one of the first natural history collections.
Jan Swammerdam was a Dutch naturalist and biologist, anatomist and microscopist.
Swammerdam graduated from the Faculty of Medicine at Leiden University, then studied in Paris, earning a doctorate in medicine, and devoted himself exclusively to microscopic research. He used a single-lens microscope to study insect anatomy, and accurately described and illustrated the life history and anatomy of many species. His observations of their development allowed him to divide insects into four major divisions according to the degree and type of metamorphosis. His greatest contribution to biology was to understand insect development and to demonstrate that the same organism persists through different stages.
Jan Swammerdam wrote a voluminous work entitled A General History of Insects (1669) and The Bible of Nature (1737-1738), one of the finest collections of microscopic observations ever published. Considered the most accurate of the classical microscopists, he was the first to observe and describe erythrocytes in 1658.
Swammerdam was also a recognized anatomist: in 1670 he was granted the privilege of dissecting human bodies in Amsterdam, which at the time required a special license available only to a limited number of researchers. He developed a new dissection technique and also designed several new instruments.
Johannes Janssonius was a Dutch cartographer, printer and publisher.
In 1616 Janssonius created his first maps of France and Italy, and every year he expanded and improved their publishing. The so-called "Great Atlas" already numbered eleven volumes. The editions were printed in Dutch, Latin, French and German.
Jan (Joan) Willemsz. Blaeu was a Dutch cartographer, publisher and judge.
Jan was born into the family of the cartographer and publisher Willem Janszoon Blaeu (1571-1638). He studied in Leiden, where he earned a doctorate in law, and in Padua. He then began to assist his father, who was engaged in the manufacture of globes and maps. After his father's death, Jan, together with his brother Cornelius, continued his work, and succeeded him as cartographer for the Dutch East India Company.
In 1651 Blaeu was elected to the Amsterdam city council and later appointed as a judge. At the same time, he was engaged in his publishing business: he continued to publish volumes of Atlas novus, which contained maps of English counties and, for the first time, an atlas of Scotland, as well as one volume of maps of the Far East.
Blaeu did not have time to complete his most ambitious project, but it made him famous as the author of the famous 11-volume Dutch atlas. Based on his previous maps, Blaeu created the Great Atlas (Atlas Maior) - it contained nearly 600 maps and a total of 3,000 pages of Latin text - and was published in 1662. Blaeu's maps were groundbreaking for their time because they were created in accordance with the heliocentric theories of Nicolaus Copernicus.
In 1672, a great fire in Amsterdam destroyed Blaeu's workshop, and the cartographer died a year later, apparently never recovering from this stroke of fate.
Willem Janszoon Blaeu was a Dutch cartographer and map publisher.
Willem studied astronomy and cartography under the Danish astronomer Tycho Brahe and even discovered the variable star P Swan in 1600. A little later Blaeu settled in Amsterdam, where he began making globes and also began producing land and sea maps, including a 1605 world map. In 1629 he managed to acquire the printing plates of the cartographer Jodok Hondius, with which he published his own atlas.
In 1633, Willem Blaeu was appointed cartographer of the Dutch Republic, as well as the official cartographer of the Dutch East India Company. Blau built up a large collection of maps and conducted an extensive publishing business. After Willem's death, his sons Jan Blaeu (1596-1673) and Cornelius Blaeu successfully continued his work. But in 1672, during a fire in Amsterdam, Blaeu's workshop was destroyed, and the company founded by Willem Blaeu ceased to exist in 1698.
