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Magnetic Field

Gary A. Glatzmaier

in Introduction to Modeling Convection in Planets and Stars: Magnetic Field, Density Stratification, Rotation

Published in print:
2013
Published Online:
October 2017
ISBN:
9780691141725
eISBN:
9781400848904
Item type:
chapter
Publisher:
Princeton University Press
DOI:
10.23943/princeton/9780691141725.003.0011
Subject:
Physics, Particle Physics / Astrophysics / Cosmology

This chapter focuses on magnetoconvection, which refers to thermal convection of an electrically conducting fluid within a background magnetic field maintained by some external mechanism. It first ... More


Instrumentation and Data Preprocessing

Lauri Parkkonen

in MEG: An Introduction to Methods

Published in print:
2010
Published Online:
September 2010
ISBN:
9780195307238
eISBN:
9780199863990
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780195307238.003.0002
Subject:
Neuroscience, Behavioral Neuroscience, Techniques

This chapter reviews the methods and technology required for magnetoencephalographic measurements. The key concepts discussed include sensor components, noise reduction methods, co-registration of ... More


The early-type magnetic stars

Leon Mestel

in Stellar Magnetism: Second Edition

Published in print:
2012
Published Online:
May 2012
ISBN:
9780199641741
eISBN:
9780191738609
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199641741.003.0009
Subject:
Physics, Particle Physics / Astrophysics / Cosmology

Chapters 4 and 5 discussed various aspects of the interaction between the magnetic field and the thermal-gravitational-rotational fields in different stellar domains. This chapter broadens the ... More


Critical-Current Data Analysis

Jack W. Ekin

in Experimental Techniques for Low-Temperature Measurements: Cryostat Design, Material Properties and Superconductor Critical-Current Testing

Published in print:
2006
Published Online:
January 2010
ISBN:
9780198570547
eISBN:
9780191717710
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198570547.003.0010
Subject:
Physics, Condensed Matter Physics / Materials

This chapter begins with a discussion of the methods of defining critical current that are practical. It then looks at the notorious problem of current-transfer voltages and how to correct them; all ... More


Somatosensory and Motor Function

Ryusuke Kakigi and Nina Forss

in MEG: An Introduction to Methods

Published in print:
2010
Published Online:
September 2010
ISBN:
9780195307238
eISBN:
9780199863990
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780195307238.003.0012
Subject:
Neuroscience, Behavioral Neuroscience, Techniques

In the twenty years since the averaged MEG values following somatosensory stimulation, i.e. the somatosensory evoked magnetic field (SEF), were first reported, many studies have been conducted and ... More


Fundamentals

Bernhard Blümich

in NMR Imaging of Materials

Published in print:
2003
Published Online:
January 2010
ISBN:
9780198526766
eISBN:
9780191709524
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198526766.003.0002
Subject:
Physics, Condensed Matter Physics / Materials

Nuclear magnetic resonance (NMR) exploits the interaction of nuclei with magnetic fields. A strong static field is applied to polarise the nuclear magnetic moments, time-dependent magnetic radio ... More


Temperature Measurement and Control

Jack W. Ekin

in Experimental Techniques for Low-Temperature Measurements: Cryostat Design, Material Properties and Superconductor Critical-Current Testing

Published in print:
2006
Published Online:
January 2010
ISBN:
9780198570547
eISBN:
9780191717710
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198570547.003.0005
Subject:
Physics, Condensed Matter Physics / Materials

This chapter focuses on cryogenic thermometers. Section 5.1 gives an overview of thermometers and singles out several that will serve well in most measurement situations. It then looks at the ... More


Magnetism and convection

Leon Mestel

in Stellar Magnetism: Second Edition

Published in print:
2012
Published Online:
May 2012
ISBN:
9780199641741
eISBN:
9780191738609
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199641741.003.0004
Subject:
Physics, Particle Physics / Astrophysics / Cosmology

Our Sun is a veritable laboratory for the study of magnetohydrodynamics. It exhibits a wide variety of phenomena — sunspots, flares, prominences — in which a magnetic field is clearly the crucial ... More


Dynamo processes in stars

Leon Mestel

in Stellar Magnetism: Second Edition

Published in print:
2012
Published Online:
May 2012
ISBN:
9780199641741
eISBN:
9780191738609
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199641741.003.0006
Subject:
Physics, Particle Physics / Astrophysics / Cosmology

The term ‘dynamo action’ appears in the literature describing two related but distinct processes. When the velocity v of a conducting fluid is driven by the non-magnetic forces in the direction ... More


SPIN AND POLARIZATION

Alexey V. Kavokin and Jeremy J. Baumberg

in Microcavities

Published in print:
2007
Published Online:
May 2008
ISBN:
9780199228942
eISBN:
9780191711190
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199228942.003.0009
Subject:
Physics, Atomic, Laser, and Optical Physics

This chapter recalls the selection rules for the optical transitions in semiconductors and introduces the pseudospin of an exciton-polariton. The overview of recent experiments on polarization ... More


Introduction to Modeling Convection in Planets and Stars: Magnetic Field, Density Stratification, Rotation

Gary A. Glatzmaier

Published in print:
2013
Published Online:
October 2017
ISBN:
9780691141725
eISBN:
9781400848904
Item type:
book
Publisher:
Princeton University Press
DOI:
10.23943/princeton/9780691141725.001.0001
Subject:
Physics, Particle Physics / Astrophysics / Cosmology

This book provides readers with the skills they need to write computer codes that simulate convection, internal gravity waves, and magnetic field generation in the interiors and atmospheres of ... More


ION TRANSPORT IN SUPERFLUID 3HE

A.F. Borghesani

in Ions and electrons in liquid helium

Published in print:
2007
Published Online:
January 2008
ISBN:
9780199213603
eISBN:
9780191707421
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199213603.003.0024
Subject:
Physics, Condensed Matter Physics / Materials

For T < 2.73 mK, liquid 3He becomes superfluid because of the formation of atomic Cooper pairs. The Pauli exclusion principle keeps atoms at a distance from each other so that the pair has non ... More


The Sun

Joanna D. Haigh and Peter Cargill

in The Sun's Influence on Climate

Published in print:
2015
Published Online:
October 2017
ISBN:
9780691153834
eISBN:
9781400866540
Item type:
chapter
Publisher:
Princeton University Press
DOI:
10.23943/princeton/9780691153834.003.0003
Subject:
Environmental Science, Climate

This chapter discusses how there are four general factors that contribute to the Sun's potential role in variations in the Earth's climate. First, the fusion processes in the solar core determine the ... More


Charged particle motion in static fields

J. B. Rosenzweig

in Fundamentals of Beam Physics

Published in print:
2003
Published Online:
January 2010
ISBN:
9780198525547
eISBN:
9780191711725
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198525547.003.0002
Subject:
Physics, Atomic, Laser, and Optical Physics

This chapter is concerned with introducing a number of model problems, based on the relativistic motion of charged particles in static electric and magnetic field configurations. It discusses that ... More


Interband magneto - optical effects

P. K. Basu

in Theory of Optical Processes in Semiconductors: Bulk and Microstructures

Published in print:
2003
Published Online:
January 2010
ISBN:
9780198526209
eISBN:
9780191706790
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198526209.003.0008
Subject:
Physics, Atomic, Laser, and Optical Physics

The behaviour of a semiconductor in the presence of a high magnetic field is different from its behaviour in the absence of a field discussed so far. This chapter first discusses the effect of a ... More


Bioelectromagnetism: Principles and Applications of Bioelectric and Biomagnetic Fields

Jaakko Malmivuo and Robert Plonsey

Published in print:
1995
Published Online:
March 2012
ISBN:
9780195058239
eISBN:
9780199847839
Item type:
book
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780195058239.001.0001
Subject:
Neuroscience, Techniques

This book looks at the application of engineering science and technology to biological cells and tissues that are electrically conducting and excitable. It describes the theory and a wide range of ... More


SPIN 1/2 CHAINS

Thierry Giamarchi

in Quantum Physics in One Dimension

Published in print:
2003
Published Online:
September 2007
ISBN:
9780198525004
eISBN:
9780191711909
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198525004.003.0006
Subject:
Physics, Condensed Matter Physics / Materials

This chapter examines the question of spin systems, the simplest realization of Luttinger liquids. The peculiarities of one dimension make the solution of this problem quite surprising and different ... More


Introduction: The simplest models of magnetism

Ralph Skomski

in Simple Models of Magnetism

Published in print:
2008
Published Online:
January 2010
ISBN:
9780198570752
eISBN:
9780191718816
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198570752.003.0001
Subject:
Physics, Condensed Matter Physics / Materials

During the last 100 years, magnetism has made a giant step forward. However, many questions remained unanswered or were not even asked at that time. What is the atomic origin of the magnetisation, ... More


Charged-particle motion in electromagnetic fields

Abraham Bers

in Plasma Physics and Fusion Plasma Electrodynamics

Published in print:
2016
Published Online:
November 2016
ISBN:
9780199295784
eISBN:
9780191749063
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199295784.003.0008
Subject:
Physics, Nuclear and Plasma Physics, Particle Physics / Astrophysics / Cosmology

This chapter presents the charged-particle collisionless motions in electromagnetic (EM) fields, with an emphasis on the motion in weakly-nonuniform B-fields that are time independent. It starts with ... More


Multiple phases

E. R. DOBBS

in Helium Three

Published in print:
2001
Published Online:
January 2010
ISBN:
9780198506409
eISBN:
9780191709463
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198506409.003.0022
Subject:
Physics, Condensed Matter Physics / Materials

This chapter examines the effects of applying a magnetic field to the A and B phases of superfluid 3He. The first section describes the distortions of the energy gap in the B phase, producing changes ... More


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