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Electromagnetism Webquest
Electromagnetism Webquest

... you test you must decide on a standard to compare it against. This means that all other factors must remain the same while you test only one of them. 1. What is the effect of changing the.... a. Type of Wire: ...
Motor Effect Joshua Gutwill September 1998
Motor Effect Joshua Gutwill September 1998

... creates energy, and the magnet reacts off the energy. I'd have to read it several times. But you step on this, & by running this wire between these magnets, you generate a current, & that creates energy that can be used to run something else, like a motor. This is not my field. [Why does the wire ju ...
Electricity – Uses of Electromagnetism
Electricity – Uses of Electromagnetism

... energy at low v______ current is increased in voltage before it is ...
Self-Assembly of Colloidal Pyramids in Magnetic Fields
Self-Assembly of Colloidal Pyramids in Magnetic Fields

... evidence that such a phenomenon occurs. Instead, we find pyramids with different values of N on the same domain wall in the same experiment. Only in some cases have we observed many small pyramids with the same N attached to the same domain wall (Figure 8). Our experiments suggest that pyramids with ...
High Efficiency Generator
High Efficiency Generator

... bank with the ecklin and or instead of using blockers what if you used nothing but just simply turning on and off the electromagnets at a high rate of speed, would not this be the same as a blocker? when electromagnet is off that would be the same as the blocker being over the magnet. and with using ...
Create an Office Mix
Create an Office Mix

... The PEMF device sends a pulsing magnetic field through a soft, flexible rubber coil up to 16 inches deep into the body. As the pulsing magnetic field pulses on, the cell membrane is gently pulled by the magnetic field. On the off phase of the pulse, the cell membrane is relaxed. As the cells expand ...
The Biot-Savart law
The Biot-Savart law

... your fingers, the circulation is positive, and the current that flows in the direction of your thumb is a positive current. Stated one more way: if you walk counter-clockwise around an Amperian loop that lies in the plane of the page, a positive enclosed current points out of the page and will produ ...
Small-scale Magnetic Field Diagnostics outside Sunspots
Small-scale Magnetic Field Diagnostics outside Sunspots

... Lozitska & Lozitsky (1994)) behind the line-ratio technique. On the base of such study of the Stokes V peak peculiarities, the small-scale structure of the solar flares was investigated (Lozitsky et al. 1999, 2000). Below we use this method to the non-flare magnetic field diagnostics. First observat ...
About Electric Motors
About Electric Motors

... in Earth's interior below Earth's North Magnetic Pole ...
Monopoles and Electricity
Monopoles and Electricity

PowerPoint-Electromagnetic Induction File
PowerPoint-Electromagnetic Induction File

... Note that if a North pole had been produced instead, the coil would be repelled and the current due to induction increased. This would cause further repulsion. We would have built a perpetual motion machine! We would get energy for nothing in contravention of the law of conservation of energy. ...
Physics 2102 Spring 2002 Lecture 15
Physics 2102 Spring 2002 Lecture 15

... 30.4.4. A coil of wire that forms a complete loop is moving with a constant speed v toward a very long, current carrying wire, only a portion of which is shown. What affect, if any, does the current carrying wire have on the coil of wire? a) Since the magnetic field increases as the coil approaches ...
CGG Vol. 32 No. 2
CGG Vol. 32 No. 2

... Bielik M., Vozár J., Šantavý J.: Multidisciplinary interpretation of gravity field in the Western Carpathians and the Bohemian Massif junction Radwan A. H. A., Bielik M., Mahmoud S. M., Tealeb A. A., Trakhan M. A.: Interpretation of Bouguer long-wavelength gravity anomalies by means of 2D density mo ...
Print PDF
Print PDF

... Delivery and Cancer Therapy Applications ...
B - LSU Physics
B - LSU Physics

... 30.4.4. A coil of wire that forms a complete loop is moving with a constant speed v toward a very long, current carrying wire, only a portion of which is shown. What affect, if any, does the current carrying wire have on the coil of wire? a) Since the magnetic field increases as the coil approaches ...
PHY222 Lab 10 - Magnetic Fields: Magnetic Flux and Lenz`s Law
PHY222 Lab 10 - Magnetic Fields: Magnetic Flux and Lenz`s Law

PPT - LSU Physics
PPT - LSU Physics

... 30.4.4. A coil of wire that forms a complete loop is moving with a constant speed v toward a very long, current carrying wire, only a portion of which is shown. What affect, if any, does the current carrying wire have on the coil of wire? a) Since the magnetic field increases as the coil approaches ...
Notes 18 3318 Faraday`s Law
Notes 18 3318 Faraday`s Law

B - UCLA IGPP
B - UCLA IGPP

... frequencies depending on the strength of the magnetic field, the plasma mass density and the length of the field line. If the field line were straight and the density and field constant, the frequencies of resonance would be nB/2l(μ0ρ)1/2 where n is the harmonic number, l is the length of the field ...
Document
Document

... faces, in terms of and to different observers. • Electromagnetic fields obey four general laws, called Maxwell’s equations. • Electromagnetic fields can exist without source charges or currents in the form of a selfsustaining electromagnetic wave. • Maxwell’s equations predict that all electromagnet ...
ISNS3371_041707_bw
ISNS3371_041707_bw

... The electron is like a magnetic dipole, a miniature magnet, with a north end and a south end. In most substances, electrons spin in random directions - magnetic fields cancel. For iron and other magnetic substances, the spin magnetism is not canceled. Can be permanently magnetized by placing in stro ...
Document
Document

Teaching Magnetism with Home
Teaching Magnetism with Home

... dimension b is very small compared with its length L (Figure 2b). This solenoid is carrying a current I which flows through N turns. The field inside the solenoid is strong and nearly parallel to its axis, having an average value Bin. The contribution from that part of the path C which lies just out ...
Magnetic dipole moment of a moving electric dipole
Magnetic dipole moment of a moving electric dipole

Physics 196 Electricity and Magnetism
Physics 196 Electricity and Magnetism

... The following topics are included in the framework of the course but are not intended as limits on content. The order of presentation and relative emphasis will vary with each instructor. I. Electrostatic Phenomena ...
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Magnet



A magnet (from Greek μαγνήτις λίθος magnḗtis líthos, ""Magnesian stone"") is a material or object that produces a magnetic field. This magnetic field is invisible but is responsible for the most notable property of a magnet: a force that pulls on other ferromagnetic materials, such as iron, and attracts or repels other magnets.A permanent magnet is an object made from a material that is magnetized and creates its own persistent magnetic field. An everyday example is a refrigerator magnet used to hold notes on a refrigerator door. Materials that can be magnetized, which are also the ones that are strongly attracted to a magnet, are called ferromagnetic (or ferrimagnetic). These include iron, nickel, cobalt, some alloys of rare earth metals, and some naturally occurring minerals such as lodestone. Although ferromagnetic (and ferrimagnetic) materials are the only ones attracted to a magnet strongly enough to be commonly considered magnetic, all other substances respond weakly to a magnetic field, by one of several other types of magnetism.Ferromagnetic materials can be divided into magnetically ""soft"" materials like annealed iron, which can be magnetized but do not tend to stay magnetized, and magnetically ""hard"" materials, which do. Permanent magnets are made from ""hard"" ferromagnetic materials such as alnico and ferrite that are subjected to special processing in a powerful magnetic field during manufacture, to align their internal microcrystalline structure, making them very hard to demagnetize. To demagnetize a saturated magnet, a certain magnetic field must be applied, and this threshold depends on coercivity of the respective material. ""Hard"" materials have high coercivity, whereas ""soft"" materials have low coercivity.An electromagnet is made from a coil of wire that acts as a magnet when an electric current passes through it but stops being a magnet when the current stops. Often, the coil is wrapped around a core of ""soft"" ferromagnetic material such as steel, which greatly enhances the magnetic field produced by the coil.The overall strength of a magnet is measured by its magnetic moment or, alternatively, the total magnetic flux it produces. The local strength of magnetism in a material is measured by its magnetization.
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