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Feb 19, 1473
Copernicus
Copernicus born, -
Jan 16, 1543
Nicolas Copernicus Publishes De Revolutionibus Orbium Coelestium
Nicolas Copernicus Publishes De Revolutionibus Orbium Coelestium (On the Revolutions of Celestial Bodies) Copernicus' masterwork; he sets out the heliocentric theory. -
Jan 16, 1582
Pope Gregory XIII
Pope Gregory XIII suggested reform of the Julian calendar, thus leading much of Catholic Europe away from the Julian (Old Style) calendar to the Gregorian -
Thomas Harriot
Thomas Harriot (c.1560-1621) travels to what would be called America and, in his A Briefe and True Report of the New Found Land of Virginia discusses its wonders, among them tobacco. -
Galileo Galilei
Galileo Galilei Demonstrates the Properties of Gravity Galileo demonstrates, from the top of the leaning tower of Pisa -
Galileo Galilei telescope
Galileo Galilei constructs his first telescope and turns it toward the heavens; his instruments begin at magnifications of approximately 3X and 10X, the most powerful achieving a magnification of 30X, an instrument he eventually gave away as a gift -
John Napier Publishes Description of the Marvelous Canon
John Napier Publishes Description of the Marvelous Canon of Logarithms Napier's invention and cataloguing of logarithms is an essential step in easing the task of numerical calculation. -
Francis Bacon Publishes Novum Organum
Francis Bacon Publishes Novum Organum Bacon attempts to create organization and cooperation within the scientific community by demonstrating how the diverse fields of science relate to one another. -
Galileo
Galileo is Forced to Recant his Theories about everything revovles round the sun -
Isaac Newton
Isaac Newton Publishes Philosophia Naturalis Principia Mathematica