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Leave about 6” free before you start winding Leave 6” at the end
Leave about 6” free before you start winding Leave 6” at the end

... North end of compass needle attracted to south pole of magnet Why can’t we feel the ...
Magnetism and Electromagnetism
Magnetism and Electromagnetism

... removed; this is termed retentivity. • Reversal of the magnetizing force will cause the flux density to move toward its negative maximum value. ...
Motor Lab DRAFT 1
Motor Lab DRAFT 1

... Electricity and magnetism are important and deeply related topics in science. Electricity refers generally to the presence and flow of electric charge. A subatomic particle, such as an electron, has an electric charge. Electric current is the flow of charged particles and a measure of how fast the p ...
Document
Document

... Maxwell: “The velocity of the transverse undulations calculated from the electromagnetic measurements of MMs. Kohlrausch and Weber, agrees so exactly with the velocity of light calculated from the optical experiments of M. Fizeau, that we can scarcely avoid the inference that light consists in the t ...
Write-up - Community Science Workshop Network
Write-up - Community Science Workshop Network

... The  strength  of  the  magnet  is  directly  related  to  several  things:    the  number  of  times  the  wire  is  wrapped   around  the  core,  the  material  of  the  core,  the  distance  from  the  core  to  the  wire,  a ...
Kindergarten Vocabulary
Kindergarten Vocabulary

Adobe Acrobat file ()
Adobe Acrobat file ()

... A proton is moving in a circular orbit of radius 14 cm in a uniform magnetic field of magnitude 0.35 T, directed perpendicular to the velocity of the proton. Find the orbital speed of the proton. ...
Unit A – “Life Science”
Unit A – “Life Science”

... 6. Be able to identify the material that conducts electric current poorly. an insulator 7. What happens if a bulb burns out in a series circuit? the other lights will go out 8. How can the strength of an electromagnet be increased? by using more turns in the metal coil 9. Be familiar with what Micha ...
Electricity and Magnetism Study Guide
Electricity and Magnetism Study Guide

Lecture 20
Lecture 20

A d f T d A d f T d Agenda for Today
A d f T d A d f T d Agenda for Today

... The magnetic force turns out to depend not only on the charge and the charge’s velocity, but also on how the velocity vector is oriented relative to the magnetic field field. Physics 202: Lecture 9, Pg 2 ...
EXAMPLE
EXAMPLE

EMP-Presentation
EMP-Presentation

... A burst of Electromagnetic radiation that results from an explosion (especially a nuclear explosion) or a suddenly fluctuating magnetic field. The resulting electric and magnetic fields may couple with electrical/electronic systems to produce damaging current and voltage surges. A broadband, high-in ...
How could a Rotating Body such as the Sun become a Magnet?
How could a Rotating Body such as the Sun become a Magnet?

... induces an electric field acting on the moving matter : and if any conducting path around the solar axis happens to be open, an electric current will flow round it, which may in turn increase the inducing magnetic field. In this way it is possible for the internal cyclic motion to act after the mann ...
Toneev
Toneev

... The magnetic field and energy density of the deconfined matter reach very high values in HIC for √sNN≥11 GeV satisfying necessary conditions for a manifestation of the CME. Under some restrictions on the magnetic field and energy density, the model describes the observable CME at two measured energi ...
Producing ultra-strong magnetic fields in neutron star mergers
Producing ultra-strong magnetic fields in neutron star mergers

Statement about Health Effect of HV Power lines
Statement about Health Effect of HV Power lines

... Childhood leukaemia is continuing to increase. Thanks to better treatment, most children are surviving this illness into adulthood. The treatment is very difficult for the children and it disrupts many families even to breaking point. It would be much better to avoid the causes of leukaemia.2 Statis ...
Faraday`s Law - barransclass
Faraday`s Law - barransclass

... What’s the Point? • This is how electric current is harnessed to do mechanical work. • It’s another way to think about the Lorentz force. ☺ ...
Author - Princeton ISD
Author - Princeton ISD

Magnetic Field Lines
Magnetic Field Lines

... In the photosphere magnetograms show that there are regions of opposite polarity that are separated by a magnetic polarity inversion line. When the magnetic field joins the opposite polarities across this inversion line the field forms a “coronal arcade”. These arcades of magnetic field lines are cl ...
Electricity Ch. 18 Sect. 2
Electricity Ch. 18 Sect. 2

... • solenoid: a coil of wire with an electric current in it – In a solenoid, the magnetic field of each loop of wire adds to the strength of the magnetic field of any neighboring loops. • The strength of a solenoid can be increased. – More loops or more current can create a stronger magnetic field. • ...
ISNS3371_041907_bw
ISNS3371_041907_bw

... higher or lower voltages. - high voltages used to send electricity over great distances from the power station can be reduced to a safer voltage for use in the house - higher voltage in transmission means less loss of power ...
the magnet
the magnet

... • Map field with a _____________________ • Direction of field is direction in which the test-compass needle will point at that location. • Draw field lines so that compass always points _______ to the field lines. • Field lines point from N to S __________ the magnet • Field lines point from S to N ...
III. Producing Electric Current
III. Producing Electric Current

III. Producing Electric Current
III. Producing Electric Current

... D. Transformer  Transformer  increases or decreases AC voltage  primary coil AC produces a magnetic field that ...
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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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