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  1. 11 de abr. de 2024 · Johannes Kepler, German astronomer who discovered three major laws of planetary motion. His discoveries turned Nicolaus Copernicus’s Sun-centered system into a dynamic universe, with the Sun actively pushing the planets around in noncircular orbits.

    • He Was First to Publish A Defense of The Heliocentric Model
    • He Discovered That A Planet Moved at Different Speeds
    • He Discovered That Planets Move in Elliptical Orbits
    • His Astronomia Nova Is Considered An Important Book in Astronomy
    • He Discovered His Third Law of Planetary Motion
    • His Book Epitome Became A Highly Influential Work in Astronomy
    • He Laid The Foundation of Modern Optics
    • He Was First to Correctly Explain The Working of A Human Eye
    • He Invented The Keplerian Telescope
    • He Was A Key Figure of The Scientific Revolution

    The first major astronomical work of Johannes Kepler, Mysterium Cosmographicum (The Cosmographic Mystery) was published in 1596. The work primarily tried to justify the six known planets and their distances from the sun in terms of the five Platonic solids. Mysterium was the first ever published defense of the Copernican system. Though Copernicus p...

    Using the accurate astronomical and planetary observations of Danish astronomer Tycho Brahe, Johannes Kepler analyzed the orbit of Mars and discovered that Mars didn’t move in a perfect circle around the sun, as was believed at the time. He found that it was closer to the sun at certain times than at others. Furthermore, it moved faster when it was...

    After formulating his second law of planetary motion, Kepler set about calculating the entire orbit of Mars, using the geometrical rate law and assuming an egg-shaped ovoid orbit. In 1605, after around 40 failed attempts, Kepler ultimately found that Mars follows an elliptical path around the sun, an idea he had assumed to be too simple a solution ...

    Kepler published his ten-year-long investigation of the motion of Mars in his most renowned work Astronomia nova (New Astronomy). Apart from including the first two of the three principles known today as Kepler’s laws of planetary motion, it provided strong arguments for heliocentrism. The idea that a planet moved in an elliptical orbit with its sp...

    Published in 1619, Harmonices Mundi (The Harmony of the World) is a book by Johannes Kepler in which he attempts to find harmony in nature by explaining proportions of the natural world in terms of music. The Harmony of the World is explained in five chapters on: regular polygons; the congruence of figures; music; astrology; and the motions of the ...

    Epitome Astronomiae Copernicanae (Epitome of Copernican Astronomy) is an influential book by Kepler which was published in three volumes in 1617, 1620 and1621. The Epitome contained all three laws of planetary motion and attempted to explain heavenly motions through physical causes. It extended the first two laws of planetary motion, which he had p...

    Johannes Kepler began his investigation of the laws of optics in 1600, and in 1604, his work Astronomiae Pars Optica (The Optical Part of Astronomy) was published. Among other things, the book contains Kepler’s formulation of the law that the intensity of light decreases with the square of distance; description of reflection by flat and curved mirr...

    Camera obscura is the natural optical phenomenon in which light rays reverse themselves when they pass through a small aperture resulting in an inverted image on the screen opposite to the opening. It is the principle on which the pinhole camera works. Johannes Kepler was the first to use the term “camera obscura” in his 1604 work Astronomiae Pars ...

    In his 1604 work Astronomiae Pars Optica, Kepler put forward the first correct explanation as to why convex and concave lenses could correct presbyopia and myopia. Then, in his 1611 work Dioptrice, Kepler set out the theoretical basis of double-convex converging lenses and double-concave diverging lenses; and explained how they combined to produce ...

    In 1627, Johannes Kepler published his Rudolphine Tables, a star catalog and planetary tables based on the observations of Tycho Brahe. For most stars these tables were accurate to within one arc minute, a significant achievement at that time. Rudolphine Tables was the first catalog to include corrective factors for atmospheric refraction; and is c...

  2. 22 de dic. de 2023 · Johannes Kepler was an astronomer best known for his three laws of planetary motion, which describe how the planets move in ellipses around the sun. His name is also well-known thanks to NASA's...

  3. Kepler described his new astronomy as "celestial physics", as "an excursion into Aristotle's Metaphysics", and as "a supplement to Aristotle's On the Heavens ", transforming the ancient tradition of physical cosmology by treating astronomy as part of a universal mathematical physics.

  4. 15 de may. de 2019 · Johannes Kepler (December 27, 1571–November 15, 1630) was a pioneering German astronomer, inventor, astrologer, and mathematician who is best known for the three laws of planetary motion now named for him. In addition, his experiments in the field of optics were instrumental in revolutionizing eyeglass and other lens-related ...