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Julian Schwinger and Quantum Electrodynamics

Julian Schwinger and Quantum Electrodynamics

On February 12, 1918, US-american theoretical physicist and Nobel Laureate Julian Seymour Schwinger was born. Schwinger is best known for his work on the theory of quantum electrodynamics (QED), in particular for developing a relativistically invariant perturbation theory, and for renormalizing QED to one loop order. “Is the purpose of theoretical physics to be no more than a cataloging of all the things that can happen when particles interact with each other…
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Elizabeth Blackwell M. D.

Elizabeth Blackwell M. D.

On February 3, 1821, British-born physician Elizabeth Blackwell was born. Blackwell is notable as the first woman to receive a medical degree in the United States, as well as the first woman on the UK Medical Register. She was the first woman to graduate from medical school, a pioneer in promoting the education of women in medicine in the United States, and a social and moral reformer in both the United States…
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The Inventions of Luther George Simjian

The Inventions of Luther George Simjian

On January 28, 1905, Armenian-American inventor Luther George Simjian was born. Simjian probably is best known for his invention of the Bankmatic Automated Teller Machine. His more than 200 inventions also included the TelePrompter, a self-posing portrait camera, automatic postage metering equipment, and an indoor golf practice range. Early Years Luther Simjian emigrated to the United States in 1920 and started to work as a photographer at the age of 15 and…
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Ancel Keys and the Effect of Saturated Fats on Our Health

Ancel Keys and the Effect of Saturated Fats on Our Health

On January 26, 1904, American nutritionist and epidemiologist Ancel Keys was born. Keys studied the influence of diet on health. In particular, he hypothesized that saturated fat in the diet is unhealthy and should be avoided. He also was the first to identify the role of saturated fats in causing heart disease. Ancel Keys – Early Years Ancel Keys was born in Colorado Springs in 1904 to Benjamin Pious Keys (1883-1961) and Carolyn…
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Alfred Romer and the Evolution of Vertebrae

Alfred Romer and the Evolution of Vertebrae

On December 28, 1894, American paleontologist and biologist Alfred Sherwood Romer was born. Romer was a a specialist in vertebrate evolution. He studied the evolution of early vertebrates in biological terms of comparative anatomy and embryology. He researched muscle and limb evolution, the development and evolutionary history of cartilage and bone, and the structure and function of the nervous system. Youth and Education Alfred Romer was born in White Plains, New York,…
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Horticulturist Liberty Hyde Bailey and the Country Life Movement

Horticulturist Liberty Hyde Bailey and the Country Life Movement

On December 25, 1954, American horticulturist and botanist Liberty Hyde Bailey passed away. Bailey helped to create the science of horticulture. He made systematic studies of cultivated plants, and advanced knowledge in hybridization, plant pathology, and agriculture. He was a recognized authority on sedges, tropical palms, blackberries, grapes, cabbages, pumpkins and squashes, among others. He is particularly notable for his great encyclopedias (Cyclopedia of American Agriculture, in four volumes, 1907-9) and important…
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Robert Kahn and the Internet Protocol

Robert Kahn and the Internet Protocol

On December 23, 1938, American computer scientist and internet pioneer Robert E. Kahn was born. Along with Vint Cerf, Kahn invented the Transmission Control Protocol (TCP) and the Internet Protocol (IP), the fundamental communication protocols at the heart of the Internet. I had the pleasure to meet Bob Kahn (as well as Vint Cerf) in the course of one of the IPv6 summits at Hasso Plattner Institute Potsdam, Germany, by the time…
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Sewall Wright and the Importance of Population Genetics

Sewall Wright and the Importance of Population Genetics

On December 21, 1889, American geneticist Sewall Green Wright was born. Wright is known for his influential work on evolutionary theory and also for his work on path analysis. He was a founder of population genetics alongside Ronald Fisher and J.B.S. Haldane,[4] which was a major step in the development of the modern evolutionary synthesis combining genetics with evolution. Early Years and Academic Career Sewall Wright‘s father Philip Green Wright was a…
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Robert J. Van de Graaff and the Van de Graaf Generator

Robert J. Van de Graaff and the Van de Graaf Generator

On December 20, 1901, American physicist Robert Jemison Van de Graaff was born. Van de Graaff is specifically noted for his design and construction of high-voltage Van de Graaff generators that can be used as a particle accelerator in atomic research. Early Years Robert Jemison Van de Graaff received his master’s degree from The University of Alabama and began working at the Alabama Power Company afterwards. Van de Graaf later studied at the…
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Robert Millikan and the Millikan experiment

Robert Millikan and the Millikan experiment

On December 19, 1953, US-American physicist and Nobel laureate Robert Andrews Millikan passed away. Millikan was honored with the Nobel Prize for Physics in 1923 for his measurement of the elementary electronic charge and for his work on the photoelectric effect. Millikan‘s famous oil-drop experiment (1911) was far superior to previous determinations of the charge of an electron, and further showed that the electron was a fundamental, discrete particle. In later work,…
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