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Topic: Edwin Hall

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Hall effect

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	Edwin Hall - Wikipedia, the free encyclopedia
		Hall's experiments consisted of exposing thin gold leaf (and, later, using various other materials) on a glass plate and tapping off the gold leaf at points down its length.
		The effect is a potential difference (Hall voltage) on opposite sides of a thin sheet of conducting or semiconducting material (the Hall element) through which an electric current is flowing.
		Hall was appointed as Harvard's professor of physics in 1895.
	en.wikipedia.org /wiki/Edwin_Hall (315 words)

	Hall effect - Wikipedia, the free encyclopedia
		The Hall effect refers to the potential difference (Hall voltage) on opposite sides of a thin sheet of conducting or semiconducting material in the form of a 'Hall bar' or a van der Pauw element through which an electric current is flowing, created by a magnetic field applied perpendicular to the Hall element.
		Interestingly enough, the Hall effect also showed that in some substances (especially semiconductors), it is more appropriate to think of the current as positive "holes" moving rather than negative electrons.
		So called Hall effect sensors are readily available from a number of different manufacturers, and may be used in various sensors such as fluid flow sensors, power sensors, and pressure sensors.
	en.wikipedia.org /wiki/Hall_effect (1218 words)

	Hall - Wikipedia, the free encyclopedia
		As an extension of this, the front entranceway or entrance room of the house is also often called the hall because it serves as an access to the main part of the house (also called the entry hall).
		It may be privately or government-owned, such as a function hall owned by one company used for weddings and cotillions (organized and run by the same company on a contractual basis) or a community hall available for rent to anyone.
		The term hall can be used to refer to the houses of medieval kings and nobles, and to some kinds of building in their entirety, for example a Meeting hall, or a Church hall.
	en.wikipedia.org /wiki/Hall (457 words)

	Edwin Hall -- Facts, Info, and Encyclopedia article (Site not responding. Last check: 2007-10-08)
		Edwin Herbert Hall (November 7, 1855 - November 20, 1938) was an (A native or inhabitant of the United States) American (A scientist trained in physics) physicist who discovered the " (Click link for more info and facts about Hall effect) Hall effect".
		Hall experiments consisted of exposing thin (A very thin form of gold foil) gold leaf (and, later, using various other materials) on a (A brittle transparent solid with irregular atomic structure) glass plate and tapping off the gold leaf at points down its length.
		The effect is a (The difference in electrical charge between two points in a circuit expressed in volts) potential difference (Hall voltage) on opposite sides of a thin sheet of conducting or semiconducting material (the Hall element) through which an (A flow of electricity through a conductor) electric current is flowing.
	www.absoluteastronomy.com /encyclopedia/e/ed/edwin_hall.htm (436 words)

	CSISS Classics - Edward T. Hall: Proxemic Theory, 1966
		Hall began to believe that basic differences in the the way that members of different cultures perceived reality were responsible for miscommunications of the most fundamental kind.
		Hall is most associated with proxemics, the study of the human use of space within the context of culture.
		Hall's ideas have also had a significant impact in communication theory, especially intercultural communication, where it inspired research on spatial perception that continues to this day (Niemeir, Campbell and Dirven 1998).
	www.csiss.org /classics/content/13 (667 words)

	Hall (Site not responding. Last check: 2007-10-08)
		U.S.A. Edwin Herbert Hall was American physicist who discovered in 1879 the "Hall effect" - development of a transverse electric field in a solid material when it carries an electric current and is placed in a magnetic field that is perpendicular to the current.
		Hall was pursuing the question first posed by Maxwell as to whether the resistance of a coil excited by a current was affected by the presence of a magnet.
		In particular, the positive Hall coefficients exhibited by metals such as magnesium and aluminium are a clear indication that a naive picture of a sea of conduction electrons is inappropriate because the majority carriers are clearly positively charged (and are, in fact, holes).
	chem.ch.huji.ac.il /~eugeniik/history/hall.html (793 words)

	Advanced Lab - Hall Effect:Introduction (Site not responding. Last check: 2007-10-08)
		In 1879 Edwin H. Hall discovered that when he placed a conducting strip carrying a current in a magnetic field, a potential difference was produced across the strip - transverse to the current and magnetic field directions.
		At the time, Hall was a 24-year-old graduate student working under Henry A. Rowland at Johns Hopkins University.
		Nonetheless, the effect that now bears Hall’s name was at a watershed in the history of physics.
	www.physics.gatech.edu /advancedlab/labs/hall/hall-1.html (318 words)

	Bell Labs: The Fractional Quantum Hall Effect (Site not responding. Last check: 2007-10-08)
		The historical roots of the fractional quantum Hall effect go back to the previous century, before the laws of quantum mechanics -- the laws that govern the behavior of matter -- were known to physicists.
		In 1879, Edwin Hall, a graduate student at Johns Hopkins University, discovered that, when a magnetic field was applied perpendicularly to a thin metal sheet that was conducting current, a small electrical voltage appeared that was perpendicular to both the sheet and the magnetic field.
		The Hall voltage and Hall resistance (the ratio of the Hall voltage to the current) are now commonly used in physics laboratories to measure the strengths of magnetic fields, as well as charge densities in various metals.
	www.bell-labs.com /news/1998/october/13/2.html (719 words)

	Hall effect
		The Hall effect (discovered by Dr. Edwin Hall in 1879) is a potential difference (voltage) on opposite sides of a thin sheet of conducting or semiconducting material (the Hall element) through which an electric current is flowing, created by a magnetic field applied perpendicular to the Hall element.
		The most common types are analog (or Linear) Hall effect sensors, which output a voltage that is proportional to the applied magnetic field, and digital Hall effect sensors, which are often used as magnetically controlled switches -- they turn on or off when the applied magnetic field reaches a certain level.
		These Hall effect switches generally consist of a Hall effect sensor, one or more logic gates and a transistor used to switch the electric current on or off.
	www.brainyencyclopedia.com /encyclopedia/h/ha/hall_effect.html (489 words)

	The Extra Mile - Points of Light Volunteer Pathway
		William Edwin Hall served as the unpaid president of the Boys and Girls Clubs of America for nearly four decades.
		Hall continually used his ties to law enforcement and the business community to enlist the support of local and national leaders for the Clubs.
		Hall once said the two things that mattered most to him in the world were his family and the Boys' Clubs of America.
	www.extramile.us /honorees/hall.cfm (1085 words)

	Hall Area (Site not responding. Last check: 2007-10-08)
		Tammany Hall Rock And Roll Hall Of Fame Induction was the name given to the Democratic Party political machine that dominated New York City politics from the mayoral victory of Fernando Wood in 1854 through the election of Fiorello LaGuardia in 1934.
		Typically a music hall song consists of a series of verses sung by the performer alone, and a repeated chorus which carries the principal melody, and in which the audience is encouraged to join.
		As Music Hall grew in popularity and respectability, the original arrangement of a large hall with tables at which drink was served, changed to that of a drink-free auditorium.
	www.hall-area.com (7383 words)

	History (Site not responding. Last check: 2007-10-08)
		The Hall effect was discovered by Edwin Hall in 1879 when he was a graduate student in the Johns Hopkins University under the advisory of Professor Henry A. Rowland, after whose name this department is named now.
		The first inversion layer Hall conductivity measurements in strong magnetic fields were done by S.Kawaji and his colleagues in 1975.
		Using a somewhat different experimental arrangement which measured the Hall voltage rather than the Hall current, Klaus von Klitzing and Th.
	www.pha.jhu.edu /~qiuym/qhe/node1.html (283 words)

	The Political Graveyard: Index to Politicians: Hall, E to F (Site not responding. Last check: 2007-10-08)
		Hall, F. — of Danvers, McLean County, Ill. Democrat.
		Hall, Fannie — of Van Wert, Decatur County, Iowa.
		Hall, Fred — of West Point, Cuming County, Neb. Republican.
	politicalgraveyard.com /bio/hall3.html (534 words)

	TechOnLine - Micronas Develops Dual-Plate Hall Sensor for Automotive Applications (Site not responding. Last check: 2007-10-08)
		The two integrated Hall plates enable a sensor to detect if a wheel or shaft moves forward or backward by detecting the magnetic fields of multi-polar, rotating ring magnets.
		Hall sensors are based on the Hall effect, named after its discoverer Edwin Hall in 1879.
		A Hall element, a square shaped semiconductor layer, for example, is supplied by a constant current.
	www.techonline.com /community/member_company/non_member/news/2010/content_14068 (478 words)

	Edwin Schlossberg (Site not responding. Last check: 2007-10-08)
		Louis Post-Dispatch 07-20-1994 EDWIN SCHLOSSBERG is sitting at a conference...
		Edwin Schlossberg and his seriously playful learning machines.
		Edwin Arthur Schlossberg is a noted exhibit designer and producer for museums and installations.
	hallencyclopedia.com /Edwin_Schlossberg (248 words)

	Virginia Hall
		Hall was educated at Radcliffe College where she developed a keen interest in modern languages.
		In 1931 Hall was appointed to the staff of the American Embassy in Poland.
		By the end of the year German officials became suspicious of Hall and she was forced to leave the country.
	www.spartacus.schoolnet.co.uk /SOEhall.htm (675 words)

	VHS MSS: Edwin C. Hall Papers
		Edwin Clifton Hall was born in Brookfield, Vermont in 1845.
		Most of the documents are the letters he wrote home from the front to his parents in Brookfield.
		The Vermont Historical Society Museum has several artifacts that Hall collected during the Civil War and afterwards, such as a Confederate officer's uniform jacket, metal canteen with plug and strap, and a tin box containing a large number of ribbons and pins.
	www.vermonthistory.org /arccat/findaid/hall.htm (494 words)

	EDWIN (Site not responding. Last check: 2007-10-08)
		Edwin Arthur Hall (R) - Binghamton (1939 - 1953) has endorsed me for Congress.
		Being endorsed by a man of his stature is a great honor.
		Edwin Arthur Hall - born February 11, 1909, (great grandson of John Allen Collier, member of Congress from 1831 - 1833) attended Binghamton public schools and Cornell University.
	www.douglaswalterdrazen.com /EDWIN.html (208 words)

	THE FAMILY OF JOHN FRIAR HALL OF AMHERST COUNTY VIRGINIA
		James Hall was said to have been a stout man. He was at a mill on one occasion, crossing the mill race on a plank while carrying a very heavy load on his shoulder.
		Mary "Mollie" Susan Hall was born 19 Oct 1874 (or 1873) in Appomattox VA and died 27 June 1951 in Newport News VA. In 1900 she was a cigar maker.
		Louise Vivian Hall, b 22 Feb 1911 Norfolk, d 28 Dec 1997 in Hampton VA. She married Grover Wade Sr 21 Nov 1931 in Norfolk VA. He was born 14 Jun 1905 in Ferrum VA and died 4 Apr 1972 in Newport News.
	www.myoutbox.net /hall.htm (4867 words)

	AIP International Catalog of Sources (Site not responding. Last check: 2007-10-08)
		Edwin Herbert Hall (1855-1938) was an American physicist and discoverer of the Hall effect.
		Consists of 13 boxes of compositions by Hall (and a few by others) and one box of correspondence.
		Hall's writings include notes, lectures, and articles on such subjects as the Hall effect and other related phenomena, metallic conduction, atomic structure, ionization, and the teaching of physics.
	www.aip.org /history/catalog/580.html (166 words)

	Haber's Art Reviews: Jan van Eyck and the New Art History (Site not responding. Last check: 2007-10-08)
		Edwin Hall, in a whole book devoted to the one painting, argues that Panofsky's interpretation violates plain facts.
		Hall's strength is to insist on one social function of both art and marriage, the furtherance of tangible property across families and generations.
		Edwin Hall's The Arnolfini Betrothal: Medieval Marriage and the Enigma of Jan van Eyck's double portrait was published in 1994 by the University of California Press.
	www.haberarts.com /trueart.htm (8799 words)

	MHA Nation - Three Affiliated Tribes
		Motion to approve agenda, with changes and additions, was made by Edwin Hall and seconded by Tex Hall.
		Edwin Hall reintroduced his motion to approve the purchase of the east 40 acres for $715.00 per acre.
		Motion was made by Thomas Bird Bear and seconded by Tex Hall to delegate Sidrick Baker as tribal representative for the cross-deputization agreement with the city of New Town.
	www.mhanation.com /main/council/minutes/1998/3_18_98.html (1396 words)

	Bell Labs: The Science Behind the Nobel (Site not responding. Last check: 2007-10-08)
		The historical roots of the fractional quantum Hall effect go back to the previous century, before the laws of quantum mechanics - the laws that govern the behavior of matter - were known to physicists.
		The phenomenon is now called the integral quantum Hall effect and, for his discovery, von Klitzing received the 1985 Nobel Prize in Physics.
		Two years after von Klitzing's discovery, Stormer and Tsui were also studying the quantum Hall effect, using extremely high quality gallium arsenide-based samples that were made by Bell Labs scientist Arthur Gossard.
	www.bell-labs.com /news/1998/october/20/3.html (1048 words)

	About Hall Associates, Inc - Commercial real estate in Roanoke, Virginia
		Hall Associates was formed in 1975 by John C. Glasgow, Edwin C. Hall and Henry Scholz, Jr.
		Throughout its history, Hall Associates has been involved with developers on many projects such as the Carillion Administrative Services Building, Coulter Building and Franklin Plaza in downtown Roanoke, and on suburban projects which include Townside Festival Shopping Center, Penn Forest Corporate Center, Century Business Center and Northpark Office Center.
		Hall Associates is poised to continue its stellar tradition of building relationships in commercial real estate for the next 30 years.
	www.hall-realtor.com /about.html (187 words)

	Amazon.com: Books: The Arnolfini Betrothal: Medieval Marriage and the Enigma of Van Eyck's Double Portrait (Discovery ... (Site not responding. Last check: 2007-10-08)
		Edwin Hall's accessible studyfirmly grounded in Roman and canon law, theology, literature, and the social history of the periodoffers a compelling new interpretation of this wonderful painting.
		Instead of depicting the sacrament of marriage, Hall argues, the painting commemorates the alliance between two wealthy and important Italian mercantile families, a ceremonious betrothal that reflects the social conventions of the time.
		Hall not only unlocks the mystery that has surrounded this work of art, he also makes a unique contribution to the fascinating history of betrothal and marriage custom, ritual, and ceremony, tracing their evolution from the late Roman Empire through the fifteenth century and providing persuasive visual evidence for their development.
	www.amazon.com /exec/obidos/tg/detail/-/0520212215?v=glance (749 words)

	Entertainment Ave! The Concert Hall - A concert review of Edwin McCain at The House of Blues - Chicago, IL - June 19, ...
		The Concert Hall - A concert review of Edwin McCain at The House of Blues - Chicago, IL - June 19, 1998.
		You won't see much guitar posing, much running back and forth across the stage, but what you will see is a guy who sings every note with passion, then drifts back from his microphone a little and just smiles, like he is his happiest when he can just play.
		I can't say that I'm now a huge Edwin McCain fan, but I do have a greater appreciation for them and understand their drawing power.
	www.entertainmentavenue.com /concert_hall/reviews/m/edwin_mccain/em061998.htm (325 words)

	Edwin Hall
		You are in: Museum of History >> Hall of North and South Americans >> Edwin Hall
		HALL, Edwin, clergyman, born in Granville, New York, 11 January, 1802; died in Auburn, New York, 8 September, 1877.
		Hall is a member of various archaeological and biblical societies in this country and abroad, and is the author of "A Critical Bibliography of the Greek New Testament, as Published in America" (Philadelphia, 1884).
	www.famousamericans.net /edwinhall (545 words)

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