physics

Joseph Hamilton and the Health Effects of Radioactive Isotopes

Joseph Hamilton and the Health Effects of Radioactive Isotopes

On November 11, 1907, American professor of Medical Physics, Experimental Medicine, General Medicine, and Experimental Radiology Joseph Gilbert Hamilton was born. Hamilton studied the medical effects of exposure to radioactive isotopes, which also included the use of unsuspecting human subjects. Education and Research in Radionuclides Joseph Hamilton joined the University of California and earned his Bachelors degree in Chemistry in 1929. He continued his education and studied medicine in Berkeley and also worked…
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Sir Hermann Bondi and the Steady State Theory

Sir Hermann Bondi and the Steady State Theory

On November 1, 1919, Anglo-Austrian mathematician and cosmologist Sir Herman Bondi was born. Bondi is best known for developing the Steady State theory of the universe with Fred Hoyle [4] and Thomas Gold as an alternative to the Big Bang theory. Their model was rendered obsolete, when in 1965, Arno Penzias and Robert Wilson detected a background microwave radiation from all directions in space, as predicted by the “Big Bang” theory of creation…
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Charles Proteus Steinmetz and the Alternating Current

Charles Proteus Steinmetz and the Alternating Current

On October 26, 1923, German-born American mathematician and electrical engineer Charles Proteus Steinmetz passed away. Steinmetz fostered the development of alternating current that made possible the expansion of the electric power industry in the United States, formulating mathematical theories for engineers. He made ground-breaking discoveries in the understanding of hysteresis that enabled engineers to design better electromagnetic apparatus equipment including especially electric motors for use in industry. “The scientist is contented if…
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Faster than the Speed of Light – Ilya Frank and the Cherenkov Radiation

Faster than the Speed of Light – Ilya Frank and the Cherenkov Radiation

On October 23, 1908, Soviet physicist Ilya Mikhailovich Frank was born. Frank received the Nobel Prize for Physics in 1958 jointly with Pavel Alekseyevich Cherenkov and Igor Y. Tamm for his work in explaining the phenomenon of Cherenkov radiation, an electromagnetic radiation emitted when a charged particle (such as an electron) passes through a dielectric medium at a speed greater than the phase velocity of light in that medium. Family Background and…
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Friedrich Kohlrausch and the Conductive Properties of Electrolytes

Friedrich Kohlrausch and the Conductive Properties of Electrolytes

On October 14, 1840, German physicist Friedrich Wilhelm Georg Kohlrausch was born. Kohlrausch investigated the conductive properties of electrolytes and contributed to knowledge of their behaviour. He also investigated elasticity, thermoelasticity, and thermal conduction as well as magnetic and electrical precision measurements. Youth and Education Friedrich Kohlrausch was born in Rinteln, Germany, the son of Rudolf Kohlrausch, a physicist who introduced the relaxation phenomena and used the stretched exponential function to explain relaxation…
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Pieter Zeeman and the Zeeman Effect

Pieter Zeeman and the Zeeman Effect

On October 9, 1943, Dutch physicist Pieter Zeeman passed away. Zeeman shared the 1902 Nobel Prize in Physics with Hendrik Lorentz for his discovery of the Zeeman effect, the effect of splitting a spectral line into several components in the presence of a static magnetic field. Youth and Education Pieter Zeeman was born on 25 May 1865 in Zonnemaire, a small town on the island of Schouwen-Duiveland, Netherlands, to Catharinus Forandinus Zeeman, a minister of…
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Paul Villard and the Gamma Radiation

Paul Villard and the Gamma Radiation

On September 28, 1860, French chemist and physicist Paul Ulrich Villard was born. Villard is best known for having discovered gamma rays in 1900 while studying the radiation emanating from radium. Paul Villard – Youth and Education Paul Villard was born in Saint-Germain-au-Mont-d’Or, Rhône, France. Villard entered the École Normal Supérieure in 1881 and received the agrégé in 1884, which gave him the license to teach at any secondary school financed by…
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Sir Andrew Noble and the Science of Ballistics

Sir Andrew Noble and the Science of Ballistics

On September 13, 1831, Scottish physicist Andrew Noble was born. Noble was a gunnery expert, known as a founder of the science of ballistics. He invented the chronoscope, a device for measuring very small time intervals, and used it to measure the velocity of shot in gun barrels. Andrew Noble – Early Years Born at Greenock, Andrew Noble was educated at Edinburgh Academy and at the Royal Military Academy, Woolwich. He was commissioned in…
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Luis Federico Leloir and the Metabolic Pathways of Lactose

Luis Federico Leloir and the Metabolic Pathways of Lactose

On September 6, 1906, Argentine physicist and biochemist Luis Federico Leloir was born. Leloir received the 1970 Nobel Prize in Chemistry for his discovery of the metabolic pathways in lactose, becoming only the third Argentine to receive the prestigious honor in any field. His research has led to significant progress in understanding, diagnosing and treating the congenital disease galactosemia. “This is only one step in a much larger project. I discovered (no, not…
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Victor Ambartsumian and Theoretical Astrophysics

Victor Ambartsumian and Theoretical Astrophysics

On September 5, 1908, Soviet astronomer and astrophysicist Viktor Amazaspovich Ambartsumian was born. Ambartsumian is well known as one of the founders of theoretical astrophysics. He worked in the field of physics of stars and nebulae, stellar astronomy, dynamics of stellar systems and cosmogony of stars and galaxies, and contributed to mathematical physics. Early Years Victor Ambartsumian was the son of the prominent philologist and writer Hamazasp Asaturovich Ambartsumian, the translator of Homer’s Iliad…
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