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Erwin Saxl
Erwin Joseph Saxl (May 7, 1904 – January 28, 1981) was a physicist and inventor. He was born in Vienna in 1904 and received his Ph.D. there in 1927. In the late 1920s he emigrated to the United States. In 1935 he founded the Saxl Instrument Company, which designed and manufactured tension meters for use in the textile industry, and later in other industries. The company, which Saxl ran jointly with his wife, Lucretia Hildreth Saxl, from their home in Harvard, Massachusetts, was renamed Tensitron in 1953. Saxl is reported as having stated that he worked under Albert Einstein.Maccabee, 1996.Sopka, 1979. He died in 1981. Saxl is most well known for a series of controversial experiments in which he measured unexpected changes in the period of a torsion pendulum under various conditions. In one series of experiments, the period of a torsion pendulum situated inside a Faraday cage, with the pendulum and the cage connected by a conducting path, was observed to increase as the v ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Physics
Physics is the natural science that studies matter, its fundamental constituents, its motion and behavior through space and time, and the related entities of energy and force. "Physical science is that department of knowledge which relates to the order of nature, or, in other words, to the regular succession of events." Physics is one of the most fundamental scientific disciplines, with its main goal being to understand how the universe behaves. "Physics is one of the most fundamental of the sciences. Scientists of all disciplines use the ideas of physics, including chemists who study the structure of molecules, paleontologists who try to reconstruct how dinosaurs walked, and climatologists who study how human activities affect the atmosphere and oceans. Physics is also the foundation of all engineering and technology. No engineer could design a flat-screen TV, an interplanetary spacecraft, or even a better mousetrap without first understanding the basic laws of physic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Harvard, Massachusetts
Harvard is a town in Worcester County, Massachusetts, United States. The town is located 25 miles west-northwest of Boston, in eastern Massachusetts. A farming community settled in 1658 and incorporated in 1732, it has been home to several non-traditional communities, such as Harvard Shaker Village and the utopian transcendentalist center Fruitlands. It is also home to St. Benedict Abbey, a traditional Catholic monastery. It is a residential town noted for its public schools, with its students ranking high in the state's English and math examinations. The population was 6,851 at the 2020 census. The official seal of the town depicts the old town public library on The Common prior to renovations that removed the front steps. History Europeans first settled in what later became Harvard in the 17th century, along a road connecting Lancaster with Groton that was formally laid out in 1658. There were few inhabitants until after King Philip's War, in which Groton and Lancas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Albert Einstein
Albert Einstein ( ; ; 14 March 1879 – 18 April 1955) was a German-born theoretical physicist, widely acknowledged to be one of the greatest and most influential physicists of all time. Einstein is best known for developing the theory of relativity, but he also made important contributions to the development of the theory of quantum mechanics. Relativity and quantum mechanics are the two pillars of modern physics. His mass–energy equivalence formula , which arises from relativity theory, has been dubbed "the world's most famous equation". His work is also known for its influence on the philosophy of science. He received the 1921 Nobel Prize in Physics "for his services to theoretical physics, and especially for his discovery of the law of the photoelectric effect", a pivotal step in the development of quantum theory. His intellectual achievements and originality resulted in "Einstein" becoming synonymous with "genius". In 1905, a year sometimes described as his ' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Torsion Pendulum
A torsion spring is a spring that works by twisting its end along its axis; that is, a flexible elastic object that stores mechanical energy when it is twisted. When it is twisted, it exerts a torque in the opposite direction, proportional to the amount (angle) it is twisted. There are various types: *A torsion bar is a straight bar of metal or rubber that is subjected to twisting (shear stress) about its axis by torque applied at its ends. *A more delicate form used in sensitive instruments, called a torsion fiber consists of a fiber of silk, glass, or quartz under tension, that is twisted about its axis. *A helical torsion spring, is a metal rod or wire in the shape of a helix (coil) that is subjected to twisting about the axis of the coil by sideways forces (bending moments) applied to its ends, twisting the coil tighter. *Clocks use a spiral wound torsion spring (a form of helical torsion spring where the coils are around each other instead of piled up) sometimes cal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Physical Review
''Physical Review'' is a peer-reviewed scientific journal established in 1893 by Edward Nichols. It publishes original research as well as scientific and literature reviews on all aspects of physics. It is published by the American Physical Society (APS). The journal is in its third series, and is split in several sub-journals each covering a particular field of physics. It has a sister journal, ''Physical Review Letters'', which publishes shorter articles of broader interest. History ''Physical Review'' commenced publication in July 1893, organized by Cornell University professor Edward Nichols and helped by the new president of Cornell, J. Gould Schurman. The journal was managed and edited at Cornell in upstate New York from 1893 to 1913 by Nichols, Ernest Merritt, and Frederick Bedell. The 33 volumes published during this time constitute ''Physical Review Series I''. The American Physical Society (APS), founded in 1899, took over its publication in 1913 and star ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nature (journal)
''Nature'' is a British weekly scientific journal founded and based in London, England. As a multidisciplinary publication, ''Nature'' features peer-reviewed research from a variety of academic disciplines, mainly in science and technology. It has core editorial offices across the United States, continental Europe, and Asia under the international scientific publishing company Springer Nature. ''Nature'' was one of the world's most cited scientific journals by the Science Edition of the 2019 ''Journal Citation Reports'' (with an ascribed impact factor of 42.778), making it one of the world's most-read and most prestigious academic journals. , it claimed an online readership of about three million unique readers per month. Founded in autumn 1869, ''Nature'' was first circulated by Norman Lockyer and Alexander Macmillan as a public forum for scientific innovations. The mid-20th century facilitated an editorial expansion for the journal; ''Nature'' redoubled its efforts in exp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mildred Allen (physicist)
Mildred Allen (March 25, 1894 – November 4, 1990) was an American physicist. Biography Early life and education Mildred Allen was born in Sharon, Massachusetts to MIT professor C. Frank Allen and Caroline Hadley Allen. She had one younger sister, Margaret Allen Anderson. Allen graduated from Vassar College in 1916 with Phi Beta Kappa honors. She completed her doctoral studies in physics in 1922 at Clark University with Arthur Gordon Webster, with thesis research done at Massachusetts Institute of Technology. Career During the 1920s and early 1930s, Allen taught at Mount Holyoke, Wellesley and Oberlin Colleges and undertook post-doctoral work at the University of Chicago and at Yale University. She began working with William Francis Gray Swann at Yale and continued work under his direction with the Bartol Research Foundation between 1927 and 1930. She also did research at Harvard University before becoming a professor at Mount Holyoke, where she taught for 31 years, until he ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mount Holyoke College
Mount Holyoke College is a private liberal arts women's college in South Hadley, Massachusetts. It is the oldest member of the historic Seven Sisters colleges, a group of elite historically women's colleges in the Northeastern United States. The college was founded in 1837 as the Mount Holyoke Female Seminary by Mary Lyon, a pioneer in education for women. A model upon which many other women's colleges were patterned, it is the oldest institution within the Seven Sisters schools, an alliance of East Coast liberal arts colleges that was originally created to provide women with an education equivalent to that provided in the then men-only Ivy League. Mount Holyoke is part of the region's Five College Consortium, along with Amherst College, Smith College, Hampshire College, and the University of Massachusetts Amherst: through this membership, students are allowed to take courses at any other member institution. Undergraduate admissions are restricted to female, transgender, and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Solar Eclipse
A solar eclipse occurs when the Moon passes between Earth and the Sun, thereby obscuring the view of the Sun from a small part of the Earth, totally or partially. Such an alignment occurs during an eclipse season, approximately every six months, during the new moon phase, when the Moon's orbital plane is closest to the plane of the Earth's orbit. In a total eclipse, the disk of the Sun is fully obscured by the Moon. In partial and annular eclipses, only part of the Sun is obscured. Unlike a lunar eclipse, which may be viewed from anywhere on the night side of Earth, a solar eclipse can only be viewed from a relatively small area of the world. As such, although total solar eclipses occur somewhere on Earth every 18 months on average, they recur at any given place only once every 360 to 410 years. If the Moon were in a perfectly circular orbit and in the same orbital plane as Earth, there would be total solar eclipses once a month, at every new moon. Instead, because the Moon ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maurice Allais
Maurice Félix Charles Allais (31 May 19119 October 2010) was a French physicist and economist, the 1988 winner of the Nobel Memorial Prize in Economic Sciences "for his pioneering contributions to the theory of markets and efficient utilization of resources", along with John Hicks (Value and Capital, 1939) and Paul Samuelson (The Foundations of Economic Analysis, 1947), to neoclassical synthesis. They formalize the self-regulation of markets, that Keynes refuted, while reiterating some of his ideas. Born in Paris, France, Allais attended the Lycée Lakanal, graduated from the École Polytechnique in Paris and studied at the École nationale supérieure des mines de Paris. His academic and other posts have included being Professor of Economics at the École Nationale Supérieure des Mines de Paris (since 1944) and Director of its Economic Analysis Centre (since 1946). In 1949, he received the title of doctor-engineer from the University of Paris, Faculty of Science. He also held t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Allais Effect
The Allais effect is the alleged anomalous behavior of pendulums or gravimeters which is sometimes purportedly observed during a solar eclipse. The effect was first reported as an anomalous precession of the plane of oscillation of a Foucault pendulum during the solar eclipse of June 30, 1954 by Maurice Allais, a French polymath who went on to win the Nobel Prize in Economics. Allais reported another observation of the effect during the solar eclipse of October 2, 1959 using the paraconical pendulum he invented. This study earned him the 1959 Galabert Prize of the French Astronautical Society and made him a laureate of the U.S. Gravity Research Foundation for his 1959 memoir on gravity. The veracity of the Allais effect remains controversial among the scientific community, as its testing has frequently met with inconsistent or ambiguous results over more than five decades of observation. Experimental observations Maurice Allais emphasized the "dynamic character" of the eff ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Katherine Sopka
Katherine Sopka (born Katherine J. Russell) was a science interviewer, physics professor and historian of physics. She is known for her interviews held with leading scientists, and for work on the history of quantum physics and the physics community in the U.S. in the 1920s and 1930s. Life Katherine was born fourth of six children in Dorchester, Boston, and attended Girl's Latin School in Boston. She studied at Radcliffe College, where she obtained her bachelor's degree in physics. She married John J. Sopka in 1943, and the couple subsequently moved to Dayton, Ohio, where her husband worked with the Manhattan project until the end of the war. They both intended to complete their graduate degrees and returned to Harvard, where Katherine earned her master's degree in physics and John his Ph.D. in mathematics. Publications Books * Katherine Russell Sopka: ''Quantum physics in America: the years through 1935'', Thomash Publishers, 1988, * Katherine Russell Sopka (ed.): ''Physic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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