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Edwin H. Hall
Edwin Herbert Hall (November 7, 1855 – November 20, 1938) was an American physicist, who discovered the eponymous Hall effect. Hall conducted thermoelectric research and also wrote numerous physics textbooks and laboratory manuals. Biography Hall was born in Gorham, Maine, United States, U.S. Hall did his undergraduate work at Bowdoin College, Brunswick, Maine, graduating in 1875. He was the principal of Gould Academy in 1875–1876 and the principal of Brunswick High School (Maine), Brunswick High School in 1876–1877. He did his graduate schooling and research, and earned his Doctor of Philosophy, Ph.D. degree (1880), at the Johns Hopkins University where his seminal experiments were performed. The Hall effect was discovered by Hall in 1879, while working on his doctoral thesis in Physics under the supervision of Henry Augustus Rowland. Hall's experiments consisted of exposing thin gold, gold leaf (and, later, using various other materials) on a glass plate and tapping ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gorham, Maine
Gorham is a town in Cumberland County, Maine, United States. The population was 18,336 at the 2020 United States Census. In addition to its urban village center known as Gorham Village or simply "the Village," the town encompasses a number of smaller, unincorporated villages and hamlets with distinct historical identities, including South Gorham, West Gorham, Little Falls, White Rock, and North Gorham. Gorham is home to one of the three campuses of the University of Southern Maine. In 2013, Gorham was voted second-best town in Maine after Hampden by a financial website. Gorham is part of the Portland– South Portland–Biddeford, Maine metropolitan statistical area. Initially named Narragansett Number 7, the village was renamed Gorhamtown Plantation in honor of the famous New England Ranger John Gorham I, the great grandfather of John Gorham 4th. History First called Narragansett Number 7 was one of seven townships granted by the Massachusetts General Court to soldiers (or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Current (electricity)
An electric current is a stream of charged particles, such as electrons or ions, moving through an electrical conductor or space. It is measured as the net rate of flow of electric charge through a surface or into a control volume. The moving particles are called charge carriers, which may be one of several types of particles, depending on the conductor. In electric circuits the charge carriers are often electrons moving through a wire. In semiconductors they can be electrons or holes. In an electrolyte the charge carriers are ions, while in plasma, an ionized gas, they are ions and electrons. The SI unit of electric current is the ampere, or ''amp'', which is the flow of electric charge across a surface at the rate of one coulomb per second. The ampere (symbol: A) is an SI base unit. Electric current is measured using a device called an ammeter. Electric currents create magnetic fields, which are used in motors, generators, inductors, and transformers. In ordinary conduct ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scientific Phenomena Named After People
This is a list of scientific phenomena and concepts named after people (eponymous phenomena). For other lists of eponyms, see eponym. A * Abderhalden–Fauser reaction – Emil Abderhalden and August Fauser (1856–1938) * Abney effect – William de Wiveleslie Abney * Abrikosov lattice – Alexei Alexeyevich Abrikosov * Aharonov–Bohm effect – Yakir Aharonov and David Bohm * Alfvén wave – Hannes Olof Gösta Alfvén * Alhazen's problem – Alhazen * Allais effect – Maurice Allais * Allee effect – Warder Clyde Allee * Amdahl's law, a.k.a. Amdahl's argument – Gene Amdahl * Ampère's law – André-Marie Ampère * Anderson–Higgs mechanism (a.k.a. Higgs mechanism) – Peter Higgs and Philip Warren Anderson * Anderson–Darling test – Theodore Wilbur Anderson and Donald A. Darling * Andreev reflection – Alexander F. Andreev * Apgar score – Virginia Apgar * Arago spot – Dominique François Jean Arago * Michaelis–Arbuzov reaction – Aleksandr Ermin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
