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Period: 200 BCE to 200 BCE
Eratosthenes
In more than 200 BC, Eratosthenes made full use of his position as the director of the Alexandria Library, and made excellent use of the rich collection of geographic materials and maps. His genius allowed him to make scientific innovations based on the possession of literature. Eratoseni’s outstanding contributions to geography are concentrated in his two representative works, namely "Revision of the Size of the Earth" and "Introduction to Geography". -
Period: 127 to 141
Claudius Ptolemy
Ptolemy summarized the achievements of ancient Greek astronomy and wrote 13 volumes of "Astronomy". Among them, the duration of one year was determined, a star catalog was compiled to explain the corrections caused by precession and refraction, and the calculation method of solar and lunar eclipses was given. This masterpiece was an encyclopedia of astronomy at that time, and until the time of Kepler, it was a must-read book for astronomers. -
Period: Jan 1, 1543 to Dec 12, 1543
Nicolaus Copernicus
Copernicus's "heliocentric theory" severely hit the cosmology that was accepted by the Catholic Church long before Aristotle. This is a great victory for modern science to eliminate outdated scientific concepts. As a result, astronomy was liberated from the shackles of outdated scientific views and religious false theology, and natural science has since gained a new life, which has epoch-making significance in the development of modern science."Run" was not published until his deathbed in 1543. -
Period: Nov 1, 1572 to Nov 30, 1572
Tycho Brahe
In November 1572, he reached a new star in the constellation Cassiopeia. His observation of the astrology, its precision and rigor reached an unprecedented level at the time. The data of the star catalog compiled by him is even close to the limit of the resolution of the naked eye, which is jaw-dropping. Tycho's data was used by his disciple, the famous Kepler, to create the famous three laws of planetary motion, which made the beginning of modern astronomy. -
Period: to
Johannes Kepler
Kepler discovered the mathematical algorithms of astronomical motion, which are orbital technology, basic knowledge, and life cycle algorithm. These three foundations made him increase the reputation of "Sky Intelligence". In order to make an important contribution, he is the foundation of modern experimental optics.
In 1596, Kepler published his first important book on cosmology: "The Mystery of the Universe." -
Period: to
Sir Isaac Newton
In 1679, Newton returned to the study of mechanics: gravity and its effect on planetary orbits, Kepler's laws of planetary motion, and discussions with Hooke and Framsted on mechanics. He attributed his work to the book "The Motion of Objects in Orbit" (1684), which contains the preliminary laws of motion that were later formed in the "Principles".Newton conducted in-depth research on the basis of the work of Galileo et al. and concluded three basic laws of object motion (Newton’s three laws) -
Period: to
Albert Einstein
In 1921, Einstein won the Nobel Prize in Physics for the study of the photoelectric effect. His research promoted the development of quantum mechanics.He taught four fields of physics in his life: special relativity, general relativity, cosmology and unified field theory.