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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.


Paolo Ricci (Italian: Paolo Ricci, Latin: Paulus Ricius, German: Paul Ritz), also known as Ritz, Riccio, or Paulus Israelita, was a humanist convert from Judaism, a writer-theologian, Kabbalist, and physician.
After his baptism in 1505 he published his first work, Sol Federis, in which he affirmed his new faith and sought through Kabbalah to refute modern Judaism. In 1506 he moved to Pavia, Italy, where he became a lecturer in philosophy and medicine at the university and met Erasmus of Rotterdam. Ricci was also a learned astrologer, a professor of Hebrew, philosophy, theology, and Kabbalah, a profound connoisseur and translator of sacred texts into Latin and Hebrew, and the author of philosophical and theological works.
Paolo Ricci was a very prolific writer. His Latin translations, especially the translation of the Kabalistic work Shaare Orach, formed the basis of the Christian Kabbalah of the early 16th century.


William Gilbert was a British physicist and medical scientist famous for pioneering the study of magnetic and electrical phenomena.
After receiving a medical degree, Gilbert settled in London and began his research. In his major work De Magnete, Magneticisque Corporibus, et de Magno Magnete Tellure (On Magnetic Stones and Magnetic Bodies and the Great Magnet of the Earth), published in 1600, the scientist describes in detail his studies of magnetic bodies and electric attraction.
After years of experimentation, he came to the conclusion that the compass arrow points north-south and downward because the Earth acts as a rod magnet. He was the first to use the terms electric attraction, electric force, and magnetic pole. Gilbert came to believe that the Earth rotates on its axis and that the fixed stars are not all the same distance from the Earth, and believed that the planets are held in their orbits by magnetism.


Girolamo Franzosi was an Italian physician and philosopher.
He was born in Polpenazza (now Polpenazze del Garda), near the Lombard lakeshore, in the late sixteenth and early seventeenth centuries. Franzosi was a student at Padua and became a convinced Aristotelian. He opposed the anatomists of the Neoteric Academy, which represented the new trends of medicine in Verona in contrast to the Galenic tendencies of traditional medicine.
Franzosi's other works, written under the influence of Girolamo Cardano and Agostino Nifo, deal with such wide-ranging topics as dreams, prophecies, imagination, and the medicinal properties of viper venom. He printed most of his works in Verona, calling himself "medicus and philosopher of Verona".


Israël Spach (also Israelis Spachius) was a German and French physician, medical writer and teacher of medicine.
Spach studied at the University of Tübingen, receiving the degree of doctor of medicine, and from 1589 taught medicine and Hebrew at the University of Strasbourg, with the rank of professor of medicine. He was characterized by a high bibliographical education.
Spach was the author of a gynecological encyclopedia, Gynaeciorum sive de mulierum tum communibus, tum gravidarum, parientium, et puerperarum affectibus et morbis, published in Strasbourg in 1597. It was a very significant book for its time.
Israël Spach also wrote Nomenclator scriptorum medicorum..., published in Frankfurt in 1591, which was the first attempt at a bibliography on medical subjects. It was organized under very broad subject headings, with indexes of authors and subjects.


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.
