Albert Einstein, who passed away on 18 March 1955, aged 76, was
a German theoretical physicist, whose profound contributions to science made
him one of the most renowned scientists in history. His theory of relativity
and the famous equation E=mc^2 are landmarks in the field of physics.
Einstein’s pioneering work on the photoelectric effect earned him the 1921
Nobel Prize in Physics and laid a key foundation for quantum theory. Notably, a
poll conducted by Physics World named him the greatest physicist of all time.
Albert Einstein was born in 1879 in the German Empire. His parents, Hermann
Einstein and Pauline Koch, were secular Ashkenazi Jews. The following year, the
Einstein family relocated to Munich, where Hermann and his brother established
an electrical equipment manufacturing company.
Einstein's formal education began at a Catholic elementary school
and continued at the Luitpold Gymnasium. After his father’s business failed, in
1894 the Einsteins moved to Italy. His talent for mathematics and physics was
evident from a young age, with the youth avidly self-studying in these
subjects.
Completing his secondary schooling in Aarau, Switzerland, he renounced his
German citizenship in 1896 and enrolled at the Swiss Federal Polytechnic School
in Zurich. It was there that he met his future wife, Mileva Marić. After
graduating in 1900, he gained Swiss citizenship the following year.
Einstein commenced his professional career in 1902 when he took up a job at the
Swiss Patent Office in Bern. While working here, he simultaneously conducted
his own research. This dual engagement bore fruit in 1905 when he published
four influential papers in the journal Annalen der Physik.
These papers, which included expositions on the photoelectric effect, Brownian
motion, special relativity, and mass-energy equivalence, had a monumental
impact on modern physics. Building on this success, in 1915, Einstein
formulated the general theory of relativity, integrating gravitation with the
principles of mechanics.
With a move to Berlin in 1914 to join the Prussian Academy of
Sciences and the Humboldt University, he solidified his academic standing. The
rise of Adolf Hitler in 1933, however, prompted Einstein, a Jewish
intellectual, to remain in the United States during a visit. By 1940, he had
accepted American citizenship.
Despite his achievements, later in his career Einstein pursued a unified field
theory without success and expressed his dissatisfaction with the inherent
randomness of quantum mechanics. During this period he frequently clashed
with Niels Bohr over the Copenhagen interpretation, famously claiming that
God "does not throw dice."
In his personal life, Einstein had various complex relationships. He married
Mileva Marić in 1903, with whom he had two sons, but they divorced in 1919.
That same year, he married his cousin Elsa Löwenthal, and they stayed married
until her death in 1936. His passion for music, especially for Mozart's
compositions, was a significant part of his life.
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