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Germany
Max Plank Commemorative Issue
1971 Proof Copper-Nickel 2 Mark 27mm (6.80 grams)
Reference: KM# 116, J# 392, Schön# 115 (1957-71) | Engraver: Karl Roth
MAX PLANCK *1858-1947+, Portrait of Max Planck (1858 – 1947), a physicist considered as the father of quantum theory.
BUNDESREPUBLIK · DEUTSCHLAND 2 DEUTSCHE MARK · 19 F, Eagle, the emblem of Germany.
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EINIGKEIT UND RECHT UND FREIHEIT
You are bidding on the exact item pictured, provided with a Certificate of Authenticity and Lifetime Guarantee of Authenticity.
 Max Karl Ernst Ludwig Planck, (23 April 1858 – 4 October 1947) was a German theoretical physicist whose discovery of energy quanta won him the Nobel Prize in Physics in 1918.
Planck made many substantial contributions to theoretical physics, but his fame as a physicist rests primarily on his role as the originator of quantum theory, which revolutionized human understanding of atomic and subatomic processes. In 1948, the German scientific institution Kaiser Wilhelm Society (of which Planck was twice president) was renamed Max Planck Society (MPS). The MPS now includes 83 institutions representing a wide range of scientific directions.
With the completion of his habilitation thesis, Planck became an unpaid Privatdozent (German academic rank comparable to lecturer/assistant professor) in Munich, waiting until he was offered an academic position. Although he was initially ignored by the academic community, he furthered his work on the field of heat theory and discovered one after another the same thermodynamical formalism as Gibbs without realizing it. Clausius’s ideas on entropy occupied a central role in his work.
In April 1885, the University of Kiel appointed Planck as associate professor of theoretical physics. Further work on entropy and its treatment, especially as applied in physical chemistry, followed. He published his Treatise on Thermodynamics in 1897. He proposed a thermodynamic basis for Svante Arrhenius’s theory of electrolytic dissociation.
In 1889, he was named the successor to Kirchhoff’s position at the Friedrich-Wilhelms-Universität in Berlin – presumably thanks to Helmholtz’s intercession – and by 1892 became a full professor. In 1907 Planck was offered Boltzmann’s position in Vienna, but turned it down to stay in Berlin. During 1909, as a University of Berlin professor, he was invited to become the Ernest Kempton Adams Lecturer in Theoretical Physics at Columbia University in New York City. A series of his lectures were translated and co-published by Columbia University professor A. P. Wills. He retired from Berlin on 10 January 1926, and was succeeded by Erwin Schrödinger.
 Germany, officially the Federal Republic of Germany is a federal parliamentary republic in western-central Europe. It includes 16 constituent states and covers an area of 357,021 square kilometres (137,847 sq mi) with a largely temperate seasonal climate. Its capital and largest city is Berlin. With 81 million inhabitants, Germany is the most populous member state in the European Union. After the United States, it is the second most popular migration destination in the world.
 Various Germanic tribes have occupied northern Germany since classical antiquity. A region named Germania was documented before 100 CE. During the Migration Period the Germanic tribes expanded southward. Beginning in the 10th century, German territories formed a central part of the Holy Roman Empire. During the 16th century, northern German regions became the centre of the Protestant Reformation.
 The rise of Pan-Germanism inside the German Confederation resulted in the unification of most of the German states in 1871 into the Prussian-dominated German Empire. After World War I and the German Revolution of 1918-1919, the Empire was replaced by the parliamentary Weimar Republic. The establishment of the Third Reich in 1933 led to World War II and the Holocaust. After 1945, Germany split into two states, East Germany and West Germany. In 1990, the country was reunified.
In the 21st century, Germany is a great power and has the world’s fourth-largest economy by nominal GDP, as well as the fifth-largest by PPP. As a global leader in several industrial and technological sectors, it is both the world’s third-largest exporter and importer of goods. Germany is a developed country with a very high standard of living sustained by a skilled and productive society. It upholds a social security and universal health care system, environmental protection and a tuition free university education.
Germany was a founding member of the European Union in 1993. It is part of the Schengen Area, and became a co-founder of the Eurozone in 1999. Germany is a member of the United Nations, NATO, the G8, the G20, and the OECD. The national military expenditure is the 9th highest in the world. Known for its rich cultural history, Germany has been continuously the home of influential artists, philosophers, musicians, sportsmen, entrepreneurs, scientists and inventors.
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