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Lines Of Force
In the history of physics, a line of force in Michael Faraday's extended sense is synonymous with James Clerk Maxwell's line of induction. According to J.J. Thomson, Faraday usually discusses ''lines of force'' as chains of polarized particles in a dielectric, yet sometimes Faraday discusses them as having an existence all their own as in stretching across a vacuum.Notes on Recent Researches in Electricity and Magnetism Joseph John Thomson, James Clerk Maxwell, 1883 In addition to lines of force, J.J. Thomson—similar to Maxwell—also calls them tubes of |
History Of Physics
Physics is a branch of science in which the primary objects of study are matter and energy. These topics were discussed across many cultures in ancient times by philosophers, but they had no means to distinguish causes of natural phenomena from superstitions. The Scientific Revolution of the 17th century, especially the discovery of the law of gravity, began a process of knowledge accumulation and specialization that gave rise to the field of physics. Mathematical advances of the 18th century gave rise to classical mechanics, and the increased used of the experimental method led to new understanding of thermodynamics. In the 19th century, the basic laws of electromagnetism and statistical mechanics were discovered. At the beginning of the 20th century, physics was transformed by the discoveries of quantum mechanics, relativity, and atomic theory. Physics today may be divided loosely into classical physics and modern physics. Ancient history Elements of what became phys ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mary B
Mary may refer to: People * Mary (name), a female given name (includes a list of people with the name) Religion * New Testament people named Mary, overview article linking to many of those below * Mary, mother of Jesus, also called the Blessed Virgin Mary * Mary Magdalene, devoted follower of Jesus * Mary of Bethany, follower of Jesus, considered by Western medieval tradition to be the same person as Mary Magdalene * Mary, mother of James * Mary of Clopas, follower of Jesus * Mary, mother of John Mark * Mary of Egypt, patron saint of penitents * Mary of Rome, a New Testament woman * Mary the Jewess, one of the reputed founders of alchemy, referred to by Zosimus. Royalty * Mary, Countess of Blois (1200–1241), daughter of Walter of Avesnes and Margaret of Blois * Mary of Burgundy (1457–1482), daughter of Charles the Bold, Duke of Burgundy * Queen Mary of Denmark (born 1972), wife of Frederik X of Denmark * Mary I of England (1516–1558), aka "Bloody Mary", Queen of Engl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flux
Flux describes any effect that appears to pass or travel (whether it actually moves or not) through a surface or substance. Flux is a concept in applied mathematics and vector calculus which has many applications in physics. For transport phenomena, flux is a vector quantity, describing the magnitude and direction of the flow of a substance or property. In vector calculus flux is a scalar quantity, defined as the surface integral of the perpendicular component of a vector field over a surface. Terminology The word ''flux'' comes from Latin: ''fluxus'' means "flow", and ''fluere'' is "to flow". As '' fluxion'', this term was introduced into differential calculus by Isaac Newton. The concept of heat flux was a key contribution of Joseph Fourier, in the analysis of heat transfer phenomena. His seminal treatise ''Théorie analytique de la chaleur'' (''The Analytical Theory of Heat''), defines ''fluxion'' as a central quantity and proceeds to derive the now well-known expre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flux Tube
A flux tube is a generally tube-like (cylindrical) region of space containing a magnetic field, B, such that the cylindrical sides of the tube are everywhere parallel to the magnetic field lines. It is a graphical visual aid for visualizing a magnetic field. Since no magnetic flux passes through the sides of the tube, the flux through any cross section of the tube is equal, and the flux entering the tube at one end is equal to the flux leaving the tube at the other. Both the cross-sectional area of the tube and the magnetic field strength may vary along the length of the tube, but the magnetic flux inside is always constant. As used in astrophysics, a flux tube generally means an area of space through which a strong magnetic field passes, in which the behavior of matter (usually ionized gas or plasma) is strongly influenced by the field. They are commonly found around stars, including the Sun, which has many flux tubes from tens to hundreds of kilometers in diameter. Sunspots are a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Field Line
A field line is a graphical Scientific visualization, visual aid for visualizing vector fields. It consists of an imaginary integral curve which is tangent to the field Euclidean vector, vector at each point along its length. A diagram showing a representative set of neighboring field lines is a common way of depicting a vector field in scientific and mathematical literature; this is called a field line diagram. They are used to show electric fields, magnetic fields, and gravitational fields among many other types. In fluid mechanics, field lines showing the velocity field of a fluid flow are called Streamlines, streaklines, and pathlines, streamlines. Definition and description A vector field defines a direction and magnitude at each point in space. A field line is an integral curve for that vector field and may be constructed by starting at a point and tracing a line through space that follows the direction of the vector field, by making the field line tangent line, tang ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oxford University Press
Oxford University Press (OUP) is the publishing house of the University of Oxford. It is the largest university press in the world. Its first book was printed in Oxford in 1478, with the Press officially granted the legal right to print books by decree in 1586. It is the second-oldest university press after Cambridge University Press, which was founded in 1534. It is a department of the University of Oxford. It is governed by a group of 15 academics, the Delegates of the Press, appointed by the Vice Chancellor, vice-chancellor of the University of Oxford. The Delegates of the Press are led by the Secretary to the Delegates, who serves as OUP's chief executive and as its major representative on other university bodies. Oxford University Press has had a similar governance structure since the 17th century. The press is located on Walton Street, Oxford, Walton Street, Oxford, opposite Somerville College, Oxford, Somerville College, in the inner suburb of Jericho, Oxford, Jericho. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Colin A
Colin may refer to: * Colin (given name) * Colin (surname) * ''Colin'' (film), a 2008 Cannes film festival zombie movie * Colin (horse) (1905–1932), Thoroughbred racehorse * Colin (humpback whale), a humpback whale calf abandoned north of Sydney, Australia, in August 2008 * Colin (river), a river in France * Colin (security robot), in ''Mostly Harmless'' of ''The Hitchhiker's Guide to the Galaxy'' series by Douglas Adams * Tropical Storm Colin (other) * Collin, a District Electoral Area in Belfast, Northern Ireland which is sometimes spelt "Colin" See also * Colinus * Collin (other) Collin may refer to: People Surname * Collin (surname) * Jacques Collin de Plancy (1793–1881), French occultist, demonologist and writer * Victor Collin de Plancy (1853–1924), French diplomat, bibliophile and art collector * Jean-Baptiste Col ... * Kolin (other) * Colyn {{disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Solenoid
upright=1.20, An illustration of a solenoid upright=1.20, Magnetic field created by a seven-loop solenoid (cross-sectional view) described using field lines A solenoid () is a type of electromagnet formed by a helix, helical coil of wire whose length is substantially greater than its diameter, which generates a controlled magnetic field. The coil can produce a uniform magnetic field in a volume of space when an electric current is passed through it. André-Marie Ampère coined the term ''solenoid'' in 1823, having conceived of the device in 1820. The French term originally created by Ampère is ''solénoïde'', which is a French transliteration of the Greek word '' σωληνοειδὴς'' which means ''tubular''. The helical coil of a solenoid does not necessarily need to revolve around a straight-line axis; for example, William Sturgeon's electromagnet of 1824 consisted of a solenoid bent into a horseshoe shape (similarly to an arc spring). Solenoids provide magnetic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scientific Priority
In science, priority is the credit given to the individual or group of individuals who first made the discovery or proposed the theory. Fame and honours usually go to the first person or group to publish a new finding, even if several researchers arrived at the same conclusion independently and at the same time. Thus, between two or more independent discoverers, the first to publish is the legitimate winner. Hence, the tradition is often referred to as the priority rule, the procedure of which is nicely summed up in a phrase " publish or perish", because there are no second prizes. In a way, the race to be first inspires risk-taking that can lead to scientific breakthroughs which is beneficial to the society (such as discovery of malaria transmission, DNA, HIV, etc.). On the other hand, it can create unhealthy competition and incentives to publish low-quality findings (e.g., quantity over quality or committing scientific misconduct), which can lead to an unreliable published liter ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
A Dynamical Theory Of The Electromagnetic Field
"A Dynamical Theory of the Electromagnetic Field" is a paper by James Clerk Maxwell on electromagnetism, published in 1865. ''(Paper read at a meeting of the Royal Society on 8 December 1864).'' Physicist Freeman Dyson called the publishing of the paper the "most important event of the nineteenth century in the history of the physical sciences". The paper was key in establishing the classical theory of electromagnetism. Maxwell derives an electromagnetic wave equation with a velocity for light in close agreement with measurements made by experiment, and also deduces that light is an electromagnetic wave. Publication Following standard procedure for the time, the paper was first read to the Royal Society on 8 December 1864, having been sent by Maxwell to the society on 27 October. It then underwent peer review, being sent to William Thomson (later Lord Kelvin) on 24 December 1864. It was then sent to George Gabriel Stokes, the Society's physical sciences secretary, on 23 March 186 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stockton Press
Stockton may refer to: Places Australia * Stockton, New South Wales * Stockton, Queensland, a locality in the Cassowary Coast Region New Zealand * Stockton, New Zealand United Kingdom * Stockton, Cheshire * Stockton, Norfolk * Stockton, Chirbury with Brompton, Shropshire * Stockton, Telford and Wrekin, a location in Shropshire; see List of United Kingdom locations * Stockton, Worfield, Shropshire * Stockton, Warwickshire * Stockton, Wiltshire * Stockton Heath, a suburb of Warrington, Cheshire *Stockton-on-Tees, County Durham, the largest town in the UK with this name * Stockton on Teme, Worcestershire * Stockton-on-the-Forest, North Yorkshire United States * Stockton, Alabama *Stockton, California, the largest US city named Stockton *Fort Stockton (San Diego, California) historical Fort * Stockton, Camden, a neighborhood in Camden, New Jersey * Stockton, Georgia *Stockton, Illinois *Stockton, Indiana *Stockton, Iowa *Stockton, Kansas *Stockton, Maryland *Stockton, Minnes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nancy J
Nancy may refer to: Places France * Nancy, France, a city in the northeastern French department of Meurthe-et-Moselle and formerly the capital of the duchy of Lorraine ** Arrondissement of Nancy, surrounding and including the city of Nancy ** Roman Catholic Diocese of Nancy, surrounding and including the city of Nancy ** École de Nancy, the spearhead of the Art Nouveau in France ** Musée de l'École de Nancy, a museum * Nancy-sur-Cluses, Haute-Savoie United States * Nancy, Kentucky * Nancy, Texas * Nancy, Virginia * Mount Nancy, in the White Mountains of New Hampshire People * Nancy (given name), including a list of people and fictional characters with the name * Nancy (singer) (Nancy Jewel McDonie; born 2000), member of Momoland * Nancy Ajram, Lebanese singer and businesswoman, commonly known mononymously as "Nancy" in the Arab World * Jean-Luc Nancy (1940–2021), French philosopher * Nazmun Munira Nancy, Bangladeshi singer Entertainment * ''Nancy'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
