Christian Doppler

Gregor Mendel and the Rules of Inheritance

Gregor Mendel and the Rules of Inheritance

On February 8, 1865, German-speaking Silesian scientist and Augustinian friar Gregor Mendel publishes his “Versuche über Pflanzenhybride” (Experiments on Plant Hybridization) in which he describes his experiments with peas, which later became the foundation of the so-called Mendelian inheritance of genetics. “It is willingly granted that by cultivation the origination of new varieties is favored, and that by man’s labor many varieties are acquired which, under natural conditions, would be lost; but nothing…
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Always Find Your Way – The Global Positioning System (GPS)

Always Find Your Way – The Global Positioning System (GPS)

On July 17, 1995, the Global Positioning System (GPS), the world’s first space-based satellite navigation system is declared operational. GPS provides location and time information in all weather conditions, anywhere on or near the Earth where there is an unobstructed line of sight to four or more GPS satellites. Navigation History Navigation is a field of study that focuses on the process of monitoring and controlling the movement of a craft or…
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Christian Doppler and the Doppler Effect

Christian Doppler and the Doppler Effect

On November 29, 1803, Christian Johann Doppler, Austrian Physicist and mathematician was born in Salzburg. Doppler is widely known for his principle, the Doppler effect, that the observed frequency of a wave depends on the relative speed of the source and the observer. He used this concept to explain the color of binary stars. “There have been applied sciences throughout the ages. … However this so-called practice was not much more than paper…
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