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Profile Documents Logout
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pptx
pptx

... • Orbital angular momentum does contribute to the magnetic moment of an atom – even in modern theories • We know a neutral atom has a magnetic moment when it is deflected by a non-uniform magnetic field. • Measuring this deflection (when the B-field is well known) is a measurement of the projection ...
Chapter 15
Chapter 15

... • The magnetic poles do not coincide with the geographic north and south poles. • The poles wander about 5 miles every ...
Nanostructure calculation of CoAg core
Nanostructure calculation of CoAg core

magnet - willisworldbio
magnet - willisworldbio

... • Paper clips and other objects containing iron also can become temporary magnets. ...
AC susceptibility data on Dy2O3 seeded randomly oriented Dy
AC susceptibility data on Dy2O3 seeded randomly oriented Dy

chapter-23
chapter-23

... There are 3 ways to change the magnetic flux through the coil: 1. Change the strength of the magnetic field at the plane of the coil. 2. Change the angle (orientation) of the coil, with respect to the magnetic field. 3. Change the area of the coil. ...
Solar Interior 2 (Petrie)
Solar Interior 2 (Petrie)

... 1. "If the Sun did not have a magnetic field, it would be as uninteresting a star as most astronomers believe it to be." (quoted by J.L. Linsky). ...
Fundamentals of Applied Electromagnetics
Fundamentals of Applied Electromagnetics

... Example 4.6 Magnetic Field inside a Toroidal Coil A toroidal coil (also called a torus or toroid) is a doughnut-shaped structure (called its core) with closely spaced turns of wire wrapped around it as shown. For a toroid with N turns carrying a current I , determine the magnetic field H in each of ...
Science of Sun activity
Science of Sun activity

... • Plasma consists of charged particles • Plasma moves through magnetic field associated with the sun • When charged particles move through a magnetic field they do not follow straight paths but spiral around. This spiraling motion is an acceleration that causes the charged particles to radiate light ...
UNIT 2 THE BODY
UNIT 2 THE BODY

the step-by-step instructions
the step-by-step instructions

... the door closed. Electromagnets are coils of wire wound around an iron core. When current flows through the coil, it produces a magnetic field, which magnetises the iron. Electromagnets are found in electric motors, cranes in scrapyards and in loudspeakers and headphones. ...
1096 - Cambridge Core
1096 - Cambridge Core

... gold coating thickness, while retaining a 10nm to 20nm paramagnetic iron core to provide greater surface area for bioactive drug binding [1,2]. Reverse emulsion is a method commonly used to create highly uniform AuFeNPs. In one mixture, an aqueous phase containing a chemical reagent is mixed into a ...
Phys2102 Spring 2002
Phys2102 Spring 2002

1. An isolated stationary point charge produces around it. a) An
1. An isolated stationary point charge produces around it. a) An

Chapter 7 Sec 2
Chapter 7 Sec 2

introduction
introduction

Document
Document

B - UConn Physics
B - UConn Physics

... ⇒ Current induced in coil •  Change pole that enters ⇒ Induced current changes sign •  Bar magnet stationary inside coil ...
Ch-37-Summary - Stout Middle School
Ch-37-Summary - Stout Middle School

... induce voltage, and output electrical energy. A motor inputs electrical energy, generates magnetic fields around coils of wire which interact with other magnets and output mechanical energy (forces). The current changes direction every time the magnet changes direction or the coil turns 180 degrees. ...
Magnetism
Magnetism

... attracted to the end of a magnet it also becomes a magnet and can attract other magnetic materials to it. The paper clip has been made into a magnet by a process called magnetic induction. When the paper clip is moved away from the magnet it loses its magnetism. Inside a magnet Groups of particles f ...
3 Quantum Spin - McMaster Physics and Astronomy
3 Quantum Spin - McMaster Physics and Astronomy

Unit Plan
Unit Plan

... 3. Identify magnets as either bar or horseshoe based on shape. 4. Name the poles of magnets as north or south. 5. Given a drawing of a magnet, draw lines representing magnetic force lines. 6. Identify the poles as the place of strongest force. 7. State the law of magnetic attraction as, “Opposite po ...
Approximating the Magnetic Field When Using Everspin MRAM
Approximating the Magnetic Field When Using Everspin MRAM

magnetism - ScienceScene
magnetism - ScienceScene

... Note: All of the materials that were attracted to the magnet are classified as ferromagnetic materials. All the others are classified as diamagnetic or paramagnetic. ...
8J Magnets and Electromagnets
8J Magnets and Electromagnets

... e.g. opposite poles of two magnets. electromagnet – A magnet made by passing electricity through a coil of wire, which often has a core inside. magnet – An object that has a magnetic field and can attract magnetic materials. magnetic field – The area around a magnet where its magnetic force can be f ...
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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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