Birth of Einstein, Death of Hawking

Today, the 990th blog entry on A Stamp A Day, features two of my personal heroes — one of whom I had the pleasure to hear lecture and meet afterwards. The Isle of Man honored both great scientists in one stamp set issued in 2016 and so it is the perfect match for today’s article. Due to combining the two anniversaries along with limited time … Continue reading Birth of Einstein, Death of Hawking

United States - Scott #1488 (1973)

Nicoalus Copernicus

Nicolaus Copernicus (Mikołaj Kopernik in Polish and either Nikolaus Kopernikus or Niklas Koppernigk in German) was born on February 19, 1473, in the city of Thorn (modern Toruń), in the province of Royal Prussia, in the Crown of the Kingdom of Poland, the youngest of four children. The Renaissance-era mathematician and astronomer formulated a model of the universe that placed the Sun rather than the … Continue reading Nicoalus Copernicus

Johannes Kepler

On this date in 1571, German mathematician, astronomer and astrologer Johannes Kepler was born. A key figure in the 17th-century scientific revolution, he is best known for his laws of planetary motion, based on his works Astronomia nova, Harmonices Mundi, and Epitome of Copernican Astronomy. These works also provided one of the foundations for Isaac Newton’s theory of universal gravitation. Kepler was a mathematics teacher at a seminary school in Graz, where … Continue reading Johannes Kepler