Kepler, Johann

Kepler, Johannes. New Astronomy. Translated by William Donahue. At the University Press, Cambridge. 1992. 

Kepler, Johannes (1571-1630) A German mathematician, author and astronomer, he became interested in the cosmos after witnessing the Great Gomet of 1577. He worked for Tycho Brahe (1546-1601) for a time and after Brahe s death became imperial mathematician in Prague. A mjgor contributor to the scientific revolution, Kepler studied optics. 

Kepler Johannes (1571—1630) most famous astronomer who laid the foundation of modem astronomy, studied nature of light and introduced concept of rays, made use of logarithm Kettrup Antonius (1938-) Gr. chem.., expert in ecological chemistry and bioanalytical methods of TA, book Analysis of Hazardous Substances ) Kirchhoff Gustave-Robert (1824-1887) Ger. phys., did spectrum analysis, black-body concept, formulated Kirchhof s laws of electricity... 

Prof. Dr. Peter Bauer Institut fLir Experimentalphysik Johannes Kepler Universitat 4040 Linz Austria... 

Christian Doppler Laboratory for Plastic Solar Cells Physical Chemistry Johannes Kepler University Linz AltenbergerstraBe 69 A-4040 Linz Austria... 

Johannes Kepler as one of the two great treasures of geometry. (The other is the Pythagorean theorem.)... 

Johannes Kepler after publishing Astronomia Nova in 1609... 

The Industrial Revolution, which was natural resource- and cheap labor-dependent, was ignited in the midst of an ongoing scientific revolution, which started over two centuries earlier with Nicolas Copernicus (1473-1543), Galileo Galilei (1564—1642), Johannes Kepler (1571-1630), Rene Descartes (1596-1650) and many others, all the way to Isaac Newton (1642-1727) and his great Principia published in 1687, and beyond—a revolution that continues unabated to these very days. 

One of the classic problems of astronomy is Why is the sky dark at night 6 This question was asked by the astronomer Johannes Kepler in the early 1600s,... 

Over the centuries numerous scholars have sought a scientific explanation for the Star of Bethlehem (figure 1.3). Jesus seems to have been born sometime between 4 and 8 b.c. Chinese annals record novae (bright stars) in 5 b.c. and 4 b.c. In the early seventeenth century Johannes Kepler suggested that the Star of Bethlehem may have been a nova in the constellation of Pisces the Fish occurring near a conjunction of Jupiter and Saturn around 7 b.c.11 (Coincidentally, a fish has long been a symbol of the Christian church.)... 

This subject has been treated extensively during the last 25 years at the Johannes Kepler University in Linz (Austria). More recent reviews on this subject were published by Eder et al. (1997), Janeschitz-Kriegl Eder et al. (2005) and Janeschitz-Krlegl (2007). A monograph of the latter author is in preparation (2008). 

The first known sketches of snowflakes from Europe in the sixteenth century did not reflect their hexagonal shape. Johannes Kepler was the first in Europe, who recognized the hexagonal symmetry of the snowflakes as he described it in his Latin tractate entitled The Six-cornered Snowflake published in 1611 [24], By this time Kepler had already discovered the first two laws of planetary motion and thus found the true celestial geometry when he turned his... 

Figure 2-54. Johannes Kepler on Hungarian memorial stamp and his Planetary Model based on the regular solids [87],...

The nuclear model of the atom, as envisioned by Rutherford and Bohr, had much in common with the solar system. In each there is a massive core that exerts a controlling influence over less massive satellites orbiting around the central core. In both the solar system and the atom, the force between the central core and the orbiting satellites decreases as the square of their separation. In the case of the solar system, it was Johannes Kepler, early in the seventeenth century, who first allowed hard data—data he knew to be accurate—to sit in judgment on his speculations about the orbits of the Sun s planets. 

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