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Max Planck

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Max Planck

Max Karl Ernst Ludwig Planck (German: [maks ˈplaŋk] ; 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 and one of the founders of modern physics, which revolutionized understanding of atomic and subatomic processes. He is known for the Planck constant, which is of foundational importance for quantum physics, and which he used to derive a set of units, now called Planck units, expressed only in terms of physical constants.

Planck was twice President of the Kaiser Wilhelm Society. In 1948 it was renamed the Max Planck Society, and today includes 83 institutions representing a wide range of scientific directions.

Max Karl Ernst Ludwig Planck was born on 23 April 1858 in Kiel, Holstein, the son of Johann Julius Wilhelm Planck and his second wife, Emma Patzig. He was baptized with the name of Karl Ernst Ludwig Marx Planck; of his given names, Marx was indicated as the "appellation name". However, by the age of ten he signed with the name Max and used this for the rest of his life.

Planck came from a traditional, intellectual family. His paternal great-grandfather and grandfather were both theology professors in Göttingen; his father was a law professor at the University of Kiel and Munich. One of his uncles was also a judge.

Planck was the sixth child in the family, though two of his siblings were from his father's first marriage. War was common during Planck's early years and among his earliest memories was the marching of Prussian and Austrian troops into Kiel during the Second Schleswig War in 1864.

In 1867, the family moved to Munich, where Planck enrolled at Maximiliansgymnasium. There, his mathematical talents emerged early and he later came under the tutelage of Hermann Müller, a mathematician who took an interest in the youth, and taught him astronomy and mechanics as well as mathematics. It was from Müller that Planck first learned the principle of conservation of energy. Planck graduated early, at age 17. This is how Planck first came in contact with the field of physics.

Planck was gifted when it came to music; he took singing lessons and played piano, organ and cello, and composed songs and operas. However, instead of music he chose to study physics.

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