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Understanding electric and magnetic fields
Understanding electric and magnetic fields

... International Agency for Research on Cancer http://www.iarc.fr/ and type “static fields” in the search tool. The National Institute of Environmental Health Sciences – National Institutes of Health www.niehs.nih.gov and type “static fields” in the search tool. National Research Council “Possible Heal ...
magnet
magnet

... magnetic pole near the north geographic pole is ACTUALLY A SOUTH MAGNETIC POLE. Common usage has named this "the North Pole" - just remember that MAGNETICALLY it's a SOUTH pole. ...
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... • Medical image segmentation, registration, and object tracking • Pattern analysis in MRI, PET, and CT images • Surgical planning • Computer aided diagnosis ...
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Magnetism and electromagnetism How are magnetic poles

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... 1. Circle the letter beside the names of the two scientists who, in 1831, independently discovered that electric current can be produced in a wire by simply moving a magnet into or out of a wire coil. a. Einstein and Faraday b. Faraday and Henry c. Henry and Newton d. Maxwell and Newton 2. Is the fo ...
Electromagnetic Waves
Electromagnetic Waves

... Velocity decreases with increase in optical density The wave equation becomes ...
PHYS 221 Recitation
PHYS 221 Recitation

Magnetism - Cloudfront.net
Magnetism - Cloudfront.net

...  All magnets contain two magnetic poles.  They have an opposite polarity, called north and south pole.  If you cut a permanent magnet in half, each will have a north and south pole.  You can separate + and – charges but not N and S ...
Magnetic, Electric, and Gravitational Fields
Magnetic, Electric, and Gravitational Fields

... poles of a magnet. – The coil of the electromagnet is connected to a battery or other source of electric current. – When an electric current flows through the wire in the electromagnet, a magnetic field is produced in the coil. ...
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Electric motors

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... ball to spin. When the spin is steady, a constant magnetic field is switched on and the ball will precess. The period of precession is determined by the strength of the field. Choose two reference points on the precession cycle that are on opposite sides, flip the commutator switch from one side to ...
PWE 19-3: Magnetic Levitation
PWE 19-3: Magnetic Levitation

... A current of 2.27 A is relatively small, so this experiment in magnetic levitation is not too difficult to perform. Note that the required current i is inversely proportional to the magnitude B of the magnetic field. You can see that if you tried to make a wire “float” using Earth’s magnetic field, ...
PlasmaTech_SinglePar..
PlasmaTech_SinglePar..

... This leads into a topic known as magnetic mirrors. Magnetic mirrors are naturally occurring phenomena that happen at the magnetic poles of planets and stars. In laboratory-based plasmas magnetic mirror are used in some process systems to confine the plasma. (They were also used – quite unsuccessfull ...
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Magnetic Fields

... 2) Two long straight parallel wires are 15 cm apart. Wire A carries 2.0 A. Wire B’s current is 4.0 A in the same direction. a) Determine the magnetic field magnitude due to wire A at the position of wire B. b) Determine the magnetic field magnitude due to wire B at the position of wire A. c) Are the ...
Magnetic susceptibility of a paramagnetic material by
Magnetic susceptibility of a paramagnetic material by

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A three-dimensional magnetic field and electromagnetic force

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The Study of the Force Generated from a Changing Magnetic Field
The Study of the Force Generated from a Changing Magnetic Field

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Topic 4: Electricity and Magnetism

Magnetic Field Variations - West Virginia University
Magnetic Field Variations - West Virginia University

... variations in much the same way that tidal and instrument drift effects were eliminated from gravity observations. ...
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Unit 13 Electromagnetic Fields

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IB Physics III Review Sheet Unit 6B: Electromagnetism Students
IB Physics III Review Sheet Unit 6B: Electromagnetism Students

... explain that there are two types of charge (positive and negative) and use the movement of charges to distinguish between electrical conductors and insulators (for example, in charging by induction) state and explain the law of conservation of charge describe the elementary charge (i.e. charge is qu ...
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Ferrofluid



A ferrofluid (portmanteau of ferromagnetic and fluid) is a liquid that becomes strongly magnetized in the presence of a magnetic field.Ferrofluid was invented in 1963 by NASA's Steve Papell as a liquid rocket fuel that could be drawn toward a pump inlet in a weightless environment by applying a magnetic field.Ferrofluids are colloidal liquids made of nanoscale ferromagnetic, or ferrimagnetic, particles suspended in a carrier fluid (usually an organic solvent or water). Each tiny particle is thoroughly coated with a surfactant to inhibit clumping. Large ferromagnetic particles can be ripped out of the homogeneous colloidal mixture, forming a separate clump of magnetic dust when exposed to strong magnetic fields. The magnetic attraction of nanoparticles is weak enough that the surfactant's Van der Waals force is sufficient to prevent magnetic clumping or agglomeration. Ferrofluids usually do not retain magnetization in the absence of an externally applied field and thus are often classified as ""superparamagnets"" rather than ferromagnets.The difference between ferrofluids and magnetorheological fluids (MR fluids) is the size of the particles. The particles in a ferrofluid primarily consist of nanoparticles which are suspended by Brownian motion and generally will not settle under normal conditions. MR fluid particles primarily consist of micrometre-scale particles which are too heavy for Brownian motion to keep them suspended, and thus will settle over time because of the inherent density difference between the particle and its carrier fluid. These two fluids have very different applications as a result.
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