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Topic: Heinrich Lenz

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	Heinrich Lenz Summary
		Lenz's seventh paper, "On the Laws which Govern the Action of a Magnet upon a Spiral," sealed his reputation as a physicist.
		Lenz's work in electrical theory, especially his work on the effects of temperature on electrical resistance, were important in understanding electrical phenomena.
		Lenz was born in Tartu in what is today Estonia.
	www.bookrags.com /Heinrich_Lenz (670 words)

	Lenz
		The Lenz's law in electromagnetism is a statement that an induced electric current flows in a direction such that the current opposes the change that induced it.
		Lenz's law upholds the general principle of the conservation of energy.
		Lenz also studied the relationship between heat and current and discovered, independently of English physicist James Joule, the law now known as Joule's law, which shows that heating effects accompany the flow of electricity in conductors.
	chem.ch.huji.ac.il /~eugeniik/history/lenz.html (471 words)

	Forschungsstelle
		Aufgabe der „Forschungsstelle J. Lenz“ ist die umfassende wissenschaftliche Erschließung der Werke und der Biographie von Jacob Michael Reinhold Lenz einschließlich der zeitgenössischen wie postumen Rezeption.
		Herders unveröffentlichte Polemik gegen Mercks „Rhapsodie von Johann Heinrich Reimhart“.
		Lenz’ „Gemählde eines Erschlagenen“ als Beitrag zum Gewaltdiskurs des 18.
	www.jacoblenz.de /forschungsstelle (603 words)

	Matt & Andrej Koymasky - Famous GLTB - Heinrich Lenz
		On his voyage with Kotzebue, Lenz studied climatic conditions such as barometric pressure, and made extremely accurate measurements of the salinity, temperature, and specific gravity of sea water.
		Lenz's law is in fact a special case of the law of conservation of energy.
		Lenz's Law states that an induced current flows in the direction that tends to oppose the motion producing it.
	andrejkoymasky.com /liv/fam/biol2/lenz1.html (235 words)

	Heinrich Lenz - Encyclopedia, History, Geography and Biography
		Heinrich Friedrich Emil Lenz (February 12, 1804 - February 10, 1865) was a Baltic German physicist most famous for formulating Lenz's law in 1833.
		Lenz was born in Tartu in what is today Estonia.
		Besides the law named in his honor, Lenz also independently discovered Joule's law in 1842; to honor his efforts on the problem, Russian physicists always use "Joule-Lenz law" as the name.
	www.arikah.com /encyclopedia/Heinrich_Lenz (220 words)

	Lenz, Heinrich Friedrich Emil (Site not responding. Last check: 2007-10-28)
		On his voyage with Kotzebue, Lenz studied climatic conditions such as barometric pressure, and made extremely accurate measurements of the salinity, temperature, and specific gravity of sea water.
		Lenz's law is in fact a special case of the law of conservation of energy.
		Lenz also studied the relationship between heat and current and discovered, independently of English physicist James Joule, the law now known as Joule's law.
	www.cartage.org.lb /en/themes/Biographies/MainBiographies/L/Lenz/1.html (193 words)

	Len'z Law - High School Online Collaborative Writing - a Wikia wiki
		Heinrich Friedrich Emil Lenz was Russian physicist who in 1833 formulated Lenz's law, a fundamental law of electromagnetism.
		The Lenz's law in electromagnetism is a statement that an induced electric current flows in a direction such that the current opposes the change that induced it.
		Lenz also studied the relationship between heat and current and discovered, independently of English physicist James Joule, the law now known as Joule's law, which shows that heating effects accompany the flow of electricity in conductors.
	schools.wikia.com /wiki/Len'z_Law (577 words)

	Lenz's law
		Lenz's law gives the direction of the induced emf resulting from electromagnetic induction, thus:
		The emf induced in an electric circuit always acts in such a direction that the current it drives around the circuit opposes the change in magnetic flux which produces the emf.
		The law is named after the Russian physicist Heinrich Lenz[?].
	www.ebroadcast.com.au /lookup/encyclopedia/le/Lenz's_law.html (55 words)

	Lenz's Law Experiments
		In 1834, Russian physicist Heinrich Lenz discovered this directional relationship between the induced magnetic fields and current, which is known as Lenz's Law.
		As the magnet swings and passes over the conductive material, the magnet's magnetic field cuts through the conductor and induces an electrical current (Remind the students about induction and how current is always generated in a conductor in the presence of a changing magnetic field).
		Therefore, it is the opposing magnetic field from the induced current (eddy currents) that slows the swing of the magnet.
	www.ndt-ed.org /TeachingResources/NDT_Tips/LenzLaw.htm (420 words)

	Lenz, Heinrich (1804-1865) (Site not responding. Last check: 2007-10-28)
		Heinrich Lenz began his academic life as a student of geophysics at the University of Dorpat (now part of Russia).
		His first teaching post was at the St. Petersburg Academy, where he showed in 1834, that the direction of a current induced by an electromagnetic force always opposes the electromagnetic force that produces it (Lenz's law).
		This law later helped Hermann Helmholtz develop the law of conservation of energy, of which Lenz's law and Joule's law (independently discovered by Lenz) were special cases.
	www.rdg.ac.uk /physicsnet/units/flap/glossary/biogs/blenzzzz.htm (83 words)

	Matt & Andrej Koymasky - Famous GLTB - Heinrich Lenz (Site not responding. Last check: 2007-10-28)
		On his return, Lenz joined the St Petersburg Academy of Science, and from 1840 held posts at the University of St Petersburg and preceptor of Czar Nikolas I's sons.
		Lenz's Law states that an induced current flows in the direction that tends to oppose the motion producing it.
		He was allegedly known amongst his closest colleagues and friends as "the glans", because of the huge size of his knob...
	www.andrejkoymasky.com /liv/fam/biol2/lenz1.html (235 words)

	Patent-Invent: Lenz's Law
		Lenz's law requires that this emf, called back emf or counter emf, oppose the motion of the armature and also the original emf, causing the motor to operate.
		Lenz's law may thus be seen as a consequence of the law of conservation of energy.
		The law is named after the Physicist Heinrich Lenz, who formulated it in 1834.
	www.patent-invent.com /electricity/inventions/lenzs_law.html (170 words)

	PBS: Tesla - Master of Lightning: Timeline of Electricity
		Heinrich Lenz (1804-65) discovers, at about the same time as Henry and Faraday, that an induced current flows in a direction to oppose the change that induced it--Lenz's law.
		Heinrich Ruhmkorff (1803-77) invents doubly-wound induction coil; some models produce arcs a foot or more in length.
		Heinrich Hertz (1857-94) discovers and measures the waves, radio waves, predicted by Faraday and Maxwell.
	www.pbs.org /tesla/res/res_electime.html (552 words)

	Lenz's
		Heinrich Emil Lenz put a definite direction to induced currents when the field was changing (strictly when "Flux" is changing).
		Lenz's Law is all about conservation of energy.
		The force acting against the conductor being moved earlier is actually an invocation of Lenz's Law.
	www.launc.tased.edu.au /online/sciences/physics/Lenz's.html (605 words)

	Self-Inductance and Inductive Reactance
		Soon after Faraday proposed his law of induction, Heinrich Lenz developed a rule for determining the direction of the induced current in a loop.
		Basically, Lenz's law states that an induced current has a direction such that its magnetic field opposes the change in magnetic field that induced the current.
		Lenz's law is important in understanding the property of inductive reactance, which is one of the properties measured in eddy current testing.
	www.ndt-ed.org /EducationResources/CommunityCollege/EddyCurrents/Physics/selfinductance.htm (875 words)

	Magnet math (Site not responding. Last check: 2007-10-28)
		Lenz's law is a basic law in electromagnetic theory for determining the direction of flow of induced currents (see
		It was first stated by the Estonian physicist Heinrich Lenz (1804-65).
		According to Lenz's law, when a current is caused to flow in an electrical conductor by a change in the external magnetic field surrounding the conductor, the direction of flow of the current is such as to produce a magnetic field opposing the original change in the external magnetic field.
	my.execpc.com /~rhoadley/magmath.htm (1072 words)

	J.M.R. Lenz: Lenz und seine Verleger - Leipzig 1774
		Des Dichters Umgang mit seinen Verlegern zeigt uns den "ganzen" Lenz in seiner Produktivität, seinem Anspruch, seiner Hektik, seiner Widersprüchlickeit.
		Lenz war ein Frühstarter, der schon mit 15 Jahren - noch vom Vater unterstützt - das Gedicht "Der Versöhnungstod Jesu Christi" veröffentlichte.
		Auch wenn er von Lenz mehrfach ungerechte Vorwürfe zu erdulden hatte, berücksichtigte er die rasch wechselnden Wünsche seines bedrängten Autors.
	lenz-forum.schobert.de /07.php (432 words)

	Phys 104 - The Laws Of Faraday And Lenz - Spring 2007
		The purpose of this experiment is to observe the current caused by an emf induced by a changing magnetic field: Faraday's Law and Lenz's law.
		Michael Faraday found that an emf is induced in a coil of wire that is proportional to the rate of change of the magnetic flux through the coil:
		The negative sign in Faraday's Law comes from Heinrich Lenz, who discovered that the direction of the induced current in a coil of wire is such that the coils own B field opposes the original change in the flux that induced the current.
	it.stlawu.edu /~physics/labs/104_lab/html/lenz.shtml (638 words)

	Grand Illusions - Toy Shop - Lenz's Law Demo
		Now Michael Faraday, the British physicist, discovered as long ago as 1831 that when you pushed a bar magnet into the opening within a copper coil, an electric current was produced within the coil.
		The German physicist Heinrich Lenz observed that the direction of the induced current in a conductor is always such as to oppose the motion which produced it.
		So as the magnetic slug moves down the copper tube, a series of transient "eddy currents" are induced in the copper tube, and these currents will create a magnetic field that opposes the downward motion of the slug.
	www.grand-illusions.com /toyshop/lenzs_law_demo (219 words)

	[No title]
		We are even finding quantifiable patterns in things that looked chaotic to previous generations.) The Russian, Heinrich Lenz, deduced which direction the current must flow.
		Also this way, the energy that you use pushing the magnet into the coil is changed into electrical energy.
		Lenz’s Law of Induction:The electrons of an induced current flow in a direction such that the induced magnetic field they create opposes the action/motion of the inducing magnet (or magnetic field - the coil can’t tell the difference).
	quark.physics.uwo.ca /~harwood/sph4a1/em6.doc (564 words)

	unit02-sect03-les09-lessona (Site not responding. Last check: 2007-10-28)
		To explain Lenz's Law we must take Faraday's Discovery one step further (don't say "Oh no!").
		It is the most important word in the statement of Lenz's Law].
		In the remainder of this lesson you will apply Lenz's Law to some simple field and coil configurations.
	www.cdli.ca /courses/phys3204/unit02/section03/lesson09/3-lesson-a.htm (264 words)

	Lenz's law - Engineering - a Wikia wiki
		We've learned that there are two right hand rules that will help us find the direction of the Magnetic Force.
		Heinrich Lenz discovered a third right hand rule that will help us find the direction of Magnetic Force.
		Right Hand Rule One, and Right Hand Rule Two have not specified which direction the emf(electro magnetic field) generated by a time varying magnetic flux linking an electric circuit acts.
	engineering.wikia.com /wiki/Lenz's_law (179 words)

	Inductance
		The symbol L for inductance was chosen to honor Heinrich Lenz (1804-1865), whose pioneering work in electromagnetic induction was instrumental in the development of the final theory.
		Lenz was responsible for the minus sign, which is a statement of Lenz' law in mathematical form.
		(In case you forgot, Lenz' law states that the induced current in a circuit always acts in a manner that opposes the change that created it in the first place.)
	hypertextbook.com /physics/electricity/inductance (711 words)

	Physics Zone - Lenz's Law (Site not responding. Last check: 2007-10-28)
		In 1835 Heinrich Lenz stated the law that now bears his name.
		The plate sees a changing magnetic field which creates a current in the plate, which creates its own magnetic field opposing the one that created it.
		Another great example of Lenz's law is to take a copper tube (it's conductive but non-magnetic) and drop a piece of steel down through the tube.
	regentsprep.org /Regents/physics/phys08/clenslaw (240 words)

	PHSchool - AP* Lesson Plans
		State Lenz's Law and use it to determine the direction of an induced current.
		Faraday's Law is used to determine the magnitude of an induced emf.
		The negative sign in Faraday's Law is a reminder of Lenz's Law which is used to determine the direction of the induced emf.
	www.phschool.com /advanced/lesson_plans/phys_walker_2002/week23.html (1005 words)

	IEEEVM: Heinrich Hertz
		Museum of Radio and Technology in Huntington, WV Heinrich Hertz
		Heinrich Rudolf Hertz is credited with being the first person to transmit and receive radio waves.
		His achievement confirmed the predictions made by the equations of James Clerk Maxwell, who suggested that producing electromagnetic waves in air was possible because electric oscillations would produce waves travelling at the speed of light.
	www.ieee-virtual-museum.org /collection/people.php?taid=&id=1234576&lid=1 (348 words)

	Biographie de LENZ Heinrich
		Jakob Michael Reinhold Lenz, and Heinrich Leopold Wagner.
		Karl Jaspers, Carl Neumann, Heinrich Rickert, and Alfred Weber.
		LENZ Heinrich, LENZ Kay, LENZ Bethany Joy, LENZ-GALEOTTI Bethany Joy...
	www.cours-de-russe.com /biographie/LENZ-Heinrich.html (612 words)

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