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LAB COURSES: 253B Fall 2013
LAB COURSES: 253B Fall 2013

... business (properly documented using appropriate forms from an athletic or academic advisor); and (v) a properly documented medical reason. Note: A slip stating that the student visited the Student Health Center does not fulfill this requirement. Documentation that you were hospitalized or an officia ...
Electromagnetic Induction and Alternating Current
Electromagnetic Induction and Alternating Current

... Q.9 An a.c. source of frequency 50 Hz is connected to a 50 mH inductor and a bulb. The bulb glows with some brightness. Calculate the capacitance of the capacitor to be connected in series with the circuit, so that the bulb glows with maximum brightness. Q.10 The output voltage of an ideal transform ...
MEASUREMENT OF MAGNETIC FIELD ALONG THE AXIS OF A
MEASUREMENT OF MAGNETIC FIELD ALONG THE AXIS OF A

... field along the axis of a circular coil. It consists of a coil with specified number turns of copper wire and a compass that can be moved along the axis of the coil. This simple apparatus is still in use in most physics labs. The problem with this apparatus is, however, poor quality of the magnetic ...
2731-AQA Physics P3.3 SoW Keeping things moving
2731-AQA Physics P3.3 SoW Keeping things moving

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How current loops and solenoids curve space-time

... of Einstein’s general relativity, states that all types of energy produce and undergo gravitation in the same way. The most widespread source of gravitation is the inertial mass, which produces permanent gravitational fields. At the opposite, electromagnetic fields could be used to generate artifici ...
Module 7 : Antenna Lecture 48
Module 7 : Antenna Lecture 48

... distance from the antenna and is responsible for the radiation of power from the antenna. The electrostatic field is inversely proportional to the frequency. As the frequency of the current approaches zero, this field diverges to infinity. This field is essentially due to the accumulation of charges ...
What Generators Do and Regulators Ought To
What Generators Do and Regulators Ought To

... the arm's spring tension and the contacts open. (Note: the way in which the contacts open is actually somewhat more complex, but this description will do for our purposes.) This immediately stops all current flow to or from the generator. The point at which the contacts open (around 8.5 to 11 volts) ...
Study of local reconnection physics in a laboratory plasma
Study of local reconnection physics in a laboratory plasma

... the reconnection process in MRX from the classical SweetParker model is the enhancement of the effective plasma resistivity over its classical values. It has been found that the resistivity enhancement strongly depends on density or equivalently the collisionality (Ji et al., 1998), as shown in Fig. ...
Michael Faraday· Discovery of Electromagnetic Induction -R
Michael Faraday· Discovery of Electromagnetic Induction -R

BaBar superconducting coil: design, construction and test - Jlab Hall-A
BaBar superconducting coil: design, construction and test - Jlab Hall-A

... the sample quenched before a significant voltage was measured. This was attributed to poor soldering of the sample within its holder. For this sample only, the quench current a t different applied magnetic fields was measured. The peak field in the BaBar coil preliminary design, a single layer windi ...
PART A (100 MARKS) QUESTION 1 a) Write down the factors that
PART A (100 MARKS) QUESTION 1 a) Write down the factors that

a-cr-ccp-803/pf-001 18-10-1 royal canadian air cadets
a-cr-ccp-803/pf-001 18-10-1 royal canadian air cadets

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3 The Magnetosphere

... When the supersonic plasma flow from the sun (solar wind) collides with the geomagnetic field, its front (dayside) region is compressed, and a clear boundary is formed. The solar wind dynamic pressure and the magnetospheric magnetic pressure are balanced at this plane, which is referred to as the ma ...
Lorenz or Coulomb
Lorenz or Coulomb

... magnitude of the potentials with respectto the constant on the boundary of the domain which is null if infinite and without sources at infinity. Hence, the tilde means the order of magnitude of a difference of potentials. Indeed, only the concept of difference of potential does have a physical mea ...
The Earth`s Magnetic Field
The Earth`s Magnetic Field

... Before the theory of a non-trivial dynamo in Earth’s interior, there were suggestions that the Earth’s magnetic field was produced by a strong permanent magnet located in its center. However, ferromagnetic material, like iron in the Earth’s core, cannot be magnetized above their Curie temperature, t ...
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c2s6.DVI 12

... and u2 (x, y, z) = c2 . These integrals represent one-parameter families of surfaces. When any two of these ~ These surfaces intersect, the result is a curve which represents a field line associated with the vector field E. type of field lines in three dimensions are more difficult to illustrate. ~ ...
LAB COURSES: 253B/255B SPRING 2014
LAB COURSES: 253B/255B SPRING 2014

... business (properly documented using appropriate forms from an athletic or academic advisor); and (v) a properly documented medical reason. Note: A slip stating that the student visited the Student Health Center does not fulfill this requirement. Documentation that you were hospitalized or an officia ...
Lab 8: Faraday`s Law, generators, and motors
Lab 8: Faraday`s Law, generators, and motors

Pdf - Text of NPTEL IIT Video Lectures
Pdf - Text of NPTEL IIT Video Lectures

... So, the electronic configuration is such that the outermost shell is or the 4f and then 5s, 5p and in some cases 5d shells. So, these are the outer electron configurations. There are of course, close shells inside, which do not contribute anything to the magnetic moment. It is only the unpaired elec ...
Transcript - Banco Internacional de Objetos Educacionais
Transcript - Banco Internacional de Objetos Educacionais

... When the current through loop one reaches a maximum, let's say then that the magnetic field due to loop one is in this direction. The current through this one and the current through this loop are two times smaller. You may want to check that. But it just so happens that the vectorial sum of the mag ...
Sensitive dependence of hydrogen Balmer-alpha
Sensitive dependence of hydrogen Balmer-alpha

... Magnetic-field scans were taken under various conditions of background gas pressure in the beamline. The data are shown in Fig. 9. For these scans, hydrogen gas was added through a gas inlet located in the viewing region. All of the pressures indicated are measured in this location, and are higher t ...
Science Essentials 7 for NSW, Stage 4, Australian Curriculum
Science Essentials 7 for NSW, Stage 4, Australian Curriculum

Explore 2: Shifting Plates and Wandering Poles
Explore 2: Shifting Plates and Wandering Poles

Metallogenic mineralization vs the granite series in the Mesozoic
Metallogenic mineralization vs the granite series in the Mesozoic

electromagnetic induction
electromagnetic induction

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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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