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The 20th century saw the emergence of several notable Algerian physicists who made significant contributions to the field of physics, especially in the context of the broader scientific community. Here are a few notable figures: 1. **Ahmed Zewail** (1946-2016): Although primarily known as an Egyptian-American, Zewail was born in Egypt and had Algerian roots.

The 20th century saw remarkable advancements in physics, largely driven by the work of many influential American physicists. Here are some key figures and their contributions: 1. **Albert Einstein** (1879-1955) - Although German-born, Einstein became a key figure in American physics after moving to the U.S. in 1933. His theories of Special and General Relativity fundamentally changed our understanding of space, time, and gravity.

The 20th century saw several influential Argentine physicists who made significant contributions to various fields, including theoretical physics, nuclear physics, and condensed matter physics. Here are a few notable Argentine physicists from that era: 1. **Carlos Chagas** - Although primarily known as a physician, Chagas's work involved significant interdisciplinary approaches, impacting biophysics and public health in Argentina.

The 20th century saw significant contributions from Australian physicists in various fields, including quantum mechanics, nuclear physics, and astrophysics. Here are some notable figures: 1. **William Lawrence Bragg (1890-1971)**: Bragg was a physicist who, along with his father, William Henry Bragg, won the Nobel Prize in Physics in 1915 for their work in X-ray crystallography.

The 20th century was a remarkable period for Austrian physics, with several notable physicists making significant contributions to various fields. Here are a few prominent Austrian physicists from that time: 1. **Erwin Schrödinger (1887-1961)**: A key figure in quantum mechanics, Schrödinger is best known for the formulation of the Schrödinger equation, which describes how the quantum state of a physical system changes over time.

The 20th century was a pivotal period for Brazilian physics, marked by the contributions of several prominent physicists who significantly advanced the field in Brazil and internationally.

The 20th century was a remarkable period for British physics, marked by significant contributions from numerous physicists who made groundbreaking advancements in various fields. Here are some notable British physicists from that era: 1. **J.J. Thomson (1856-1940)**: Known for discovering the electron in 1897, he was awarded the Nobel Prize in Physics in 1906 for his work on electrical conductivity in gases.

In the 20th century, Bulgaria produced several notable physicists who made significant contributions to various fields within physics. Some of the prominent Bulgarian physicists from that era include: 1. **Angel Kanchev** - Known for his contributions to the fields of nuclear physics and particle physics.

The 20th century saw many significant contributions from Canadian physicists who advanced the field in various areas, including quantum mechanics, nuclear physics, and condensed matter physics. Here are a few notable Canadian physicists from the 20th century: 1. **Bertram N.

The 20th century was a significant period for Chinese physics, marked by the emergence of several influential physicists who made notable contributions to various fields. Here are some key figures: 1. **Qian Xuesen (Tsien Hsue-shen)** (1911–2009): A prominent aerodynamics and spacecraft design scientist, Qian was instrumental in the development of rocket technology in China.

The 20th century saw significant contributions from Danish physicists, with Niels Bohr being one of the most prominent figures. 1. **Niels Bohr (1885-1962)**: Bohr was awarded the Nobel Prize in Physics in 1922 for his foundational work in atomic structure and quantum theory, particularly the Bohr model of the atom.

The 20th century saw significant contributions from Dutch physicists to various fields of physics. Here are some notable figures and their achievements: 1. **Hendrik Lorentz (1853–1928)** - Lorentz made groundbreaking contributions to the understanding of electromagnetism and is best known for the Lorentz transformations, which are fundamental to Einstein's theory of special relativity. He was awarded the Nobel Prize in Physics in 1902. 2. **Albert A.

The 20th century saw the emergence of several notable Estonian physicists who contributed to various fields within physics, especially after Estonia regained independence in 1991. Some key figures include: 1. **Georg Ots**: A prominent physicist who contributed to theoretical physics and participated in research related to condensed matter physics. 2. **Erik J. L. P. Liivamägi**: Known for his work in the fields of atomic physics and quantum mechanics.

The 20th century saw several prominent Finnish physicists who made significant contributions to various fields of physics. Here are a few notable figures: 1. **Hannes Alfvén** (1908-1995) - A pioneer in the field of plasma physics, Alfvén was awarded the Nobel Prize in Physics in 1970 for his work on magnetohydrodynamics and the theory of cosmic plasma. 2. **Leo P.

The 20th century was a remarkable period for French physicists, who made significant contributions across various fields of physics. Here are a few notable figures: 1. **Marie Curie (1867-1934)**: Although much of her pioneering work on radioactivity occurred in the late 19th and early 20th centuries, her influence extended well into the 20th century.

The 20th century was a period of significant advancement in physics, and German physicists played a crucial role in many developments. Here are some key figures and their contributions: 1. **Max Planck (1858-1947)**: Often considered the father of quantum theory, Planck introduced the concept of quantization of energy. His work on black-body radiation led to Planck's constant and fundamentally changed our understanding of atomic and subatomic processes.

The 20th century saw several significant Greek physicists who contributed to various fields within physics. Here are a few notable figures: 1. **John L. Sullivan (Yiannis L. Souliotis)** - Although primarily known as a chemist, A. Souliotis made significant contributions to physical chemistry and was influential in the development of theoretical models.

Hungary has produced several notable physicists in the 20th century who made significant contributions to various fields of physics. Here are a few prominent Hungarian physicists from that era: 1. **Leo Szilard (1898–1964)**: A physicist and inventor, Szilard is best known for his work on nuclear physics and his role in the development of the atomic bomb as part of the Manhattan Project.

The 20th century saw significant contributions from Indian physicists to various fields of physics, many of whom made their mark both in India and internationally. Here are a few notable Indian physicists from that era: 1. **C. V. Raman (1888–1970)**: He was awarded the Nobel Prize in Physics in 1930 for his discovery of the Raman effect, which is the scattering of light and has applications in various fields including chemistry and material science.

The 20th century saw significant contributions from Irish physicists in various areas of research. Here are a few notable figures: 1. **Ernest Walton (1903-1995)**: An Irish physicist who, along with his collaborator, was awarded the Nobel Prize in Physics in 1951 for their work on the development of the first cyclotron and for the artificial disintegration of atomic nuclei. Walton’s work was crucial in advancing nuclear physics.