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Books > Science & Mathematics > Physics > Electricity, magnetism & electromagnetism
Instant Physics pulls together all the pivotal physics knowledge
and thought into one concise volume. Each page contains a discrete
'cheat sheet', which tells you the most important facts in
bite-sized chunks, meaning you can become an expert in an instant.
From black holes to black body radiation, telescopes to
microscopes, quantum mechanics to general relativity, every key
figure, discovery or idea is explained with succinct and lively
text and graphics. Perfect for the knowledge hungry and time poor,
this collection of graphic-led lessons makes psychology interesting
and accessible. Everything you need to know is here.
Renewable energy (RE) is a subject of great interest today. It is
one of the two main means for implementing climate change
mitigation programmes, and presently the only perceived means for
replacing the declining global fossil fuel reserves. It also helps
fight poverty and assists in the global quest for gender equity by
taking clean energy where it is needed most for development. It is
perhaps not surprising therefore that there is so much coverage of
RE in both the conventional media and the internet by media and
tech writers, economists and bloggers, many of who only have a
partial understanding of the technology itself. The end result is
mostly promotional rhetoric that says little about the true value
of the technology, and leads to a confused picture for the serious
individual or decision-maker who wants to know what the technology
is really capable of doing. This book provides a clear and factual
picture of the status of RE and its capabilities today. The need
for such a book was first realized by the author when he was
engaged in a renewable energy capacity-building project
encompassing countries from Europe, the Caribbean, Africa, and the
Pacific. The book is largely non-technical in nature; it does
however contain enough mention of the science and technology to
enable readers to go further with their own investigations should
they wish to. The book covers all areas of renewable energy (RE),
starting from biomass energy and hydropower and proceeding to wind,
solar and geothermal energy before ending with an overview of ocean
energy. It begins with a simple introduction to the physical
principles of the RE technologies, followed by an enumeration of
the requirements for their successful implementation. The last two
chapters consider how the technologies are actually being
implemented today and their roles in climate change mitigation and
poverty alleviation.
This book summarizes the state-of-the-art knowledge on ferrites as
well as the cutting-edge applications of these versatile materials.
The main families of ferrites and their modern synthesis and
processing methods are covered in this review book. Furthermore,
the different morphologies of these materials and their current and
incipient applications are also discussed.
Externally tunable properties allow for new applications of
magnetic hybrid materials containing magnetic micro- and
nanoparticles in sensors and actuators in technical and medical
applications. By means of easy to generate and control magnetic
fields, changes of the internal particle arrangements and the
macroscopic properties can be achieved. This monograph delivers the
latest insights into multi-scale modelling, experimental
characterization, manufacturing and application of those magnetic
hybrid materials.
Over the last few decades magnetism has seen an enormous
expansion into a variety of different areas of research, notably
the magnetism of several classes of novel materials that share with
truly ferromagnetic materials only the presence of magnetic
moments.
Volume 21 of the "Handbook of Magnetic Materials," like the
preceding volumes, has a dual purpose.With contributions from
leading authorities in the field, it includesa variety
oftopicswhich are intendedas self-containedintroductions toa
givenarea in the field of magnetism without requiring recourse to
the published literature. It is also intended as a reference for
scientists active in magnetism research, providing readers with
novel trends and achievements in magnetism.Volume 21 comprises
topical review articles covering Heusler compounds,
quasicrystalline solids, bulk amorphous alloys and nanocrystalline
soft-magnetic alloys. In each of these articles an extensive
description is given in graphical as well as in tabular form, much
emphasis being placed on the discussion of the experimental
material within the framework of physics, chemistry and material
science.
Composed of topical review articles written by leading
authoritiesIntroduces given topics in the field of
magnetismProvides the reader with novel trends and achievements in
magnetism"
This book is an introduction to the concept of symmetries in
electromagnetism and explicit symmetry breaking. It begins with a
brief background on the origin of the concept of symmetry and its
meaning in fields such as architecture, mathematics and physics.
Despite the extensive developments of symmetry in these fields, it
has yet to be applied to the context of classical electromagnetism
and related engineering applications. This book unravels the beauty
and excitement of this area to scientists and engineers.
Electric glow discharges (glows) can be found almost everywhere,
from atmospheric electricity to modern plasma technologies, and
have long been the object of research. The main purpose of this
book is to provide simple illustrations of the basic physical
mechanisms and principles that determine the properties of electric
glow discharges. It should enable readers to successfully
participate in scientific and technical progress.
This book is devoted to the theoretical and experimental
investigation of the optoelectronic oscillator (OEO) with direct
and external modulation of laser emission. Such devices, sources of
precision radio frequency oscillations using laser excitation, are
novel and technologically relevant, with manifold possible
applications. The book includes a review of the present state of
the theory and generation techniques in microwave and mm-wave
ranges for traditional and optoelectronic oscillators, description
of OEO construction and operation principles, theoretical
oscillation analysis and mathematical description of the relevant
semi-classical laser physics, and investigation of the power
spectral density of noises. Technical features and advantages of
OEOs with external and direct modulation of laser emission are
discussed together with functional diagrams. The characteristics of
OEOs are compared with other traditional RF oscillators, such as
quartz, surface acoustic waves, and oscillators with
electromagnetic wave cavities. Special attention is paid to
Q-factors and phase noises of RF carriers at small offsets. The
authors discuss the technical characteristics of modern
optoelectronic methods for precision RF oscillation formation, such
as commercial large-dimension and compact quantum frequency
standards with optical pumping on cesium and rubidium cells. This
book is aimed at scientists and engineers in academia and industry
who work with sources of microwave and mm-wave signals.
This book presents a theoretical study of the generation and
conversion of phonon angular momentum in crystals. Recently,
rotational motions of lattice vibrations, i.e., phonons, in
crystals attract considerable attentions. As such, the book
theoretically demonstrate generations of phonons with rotational
motions, based on model calculations and first-principle
calculations. In systems without inversion symmetry, the phonon
angular momentum is shown to be caused by the temperature gradient,
which is demonstrated in crystals such as wurtzite gallium nitride,
tellurium, and selenium using the first-principle calculations. In
systems with neither time-reversal nor inversion symmetries, the
phonon angular momentum is shown to be generated by an electric
field. Secondly, the book presents the microscopic mechanisms
developed by the author and his collaborator on how these
microscopic rotations of nuclei are coupled with electron spins.
These predictions serve as building blocks for spintronics with
phonons or mechanical motions.
This thesis presents the first ever measurement of the noise
emitted by magnetic monopoles and the development of an exquisitely
sensitive magnetic-field-noise spectrometer based on a
superconducting quantum interference device (SQUID) that enabled
it. Magnetic monopoles are highly elusive elementary particles
exhibiting quantized magnetic charge. The prospects for studying
them brightened recently with the theoretical discovery that the
thermally excited states in certain classes of magnetic insulators
exhibit all the characteristics of magnetic monopoles. Furthermore,
in 2018, it was predicted that the random motion of magnetic
monopoles inside would generate a very specific kind of
magnetization noise. In this thesis, the author describes a new
experimental technique, so-called spin noise spectroscopy, and the
subsequent discovery of virtually all of the predicted features of
the magnetic noise expected from a dense fluid of magnetic
monopoles in crystals of Dy2Ti2O7. Remarkably, because this
magnetic monopole noise occurs in the frequency range below 20kHz,
when amplified by the SQUID it is actually audible to humans.
The dynamics of quantum systems exposed to ultrafast (at the
femtosecond time-scale) and strong laser radiation has a highly
non-linear character, leading to a number of new phenomena, outside
the reach of traditional spectroscopy. The current laser technology
makes feasible the probing and control of quantum-scale systems
with fields that are as strong as the interatomic Coulombic
interactions and time resolution that is equal to (or less than)
typical atomic evolution times. It is indispensable that any
theoretical description of the induced physical processes should
rely on the accurate calculation of the atomic structure and a
realistic model of the laser radiation as pulsed fields. This book
aims to provide an elementary introduction of theoretical and
computational methods and by no means is anywhere near to complete.
The selection of the topics as well as the particular viewpoint is
best suited for early-stage students and researchers; the included
material belongs in the mainstream of theoretical approaches albeit
using simpler language without sacrificing mathematical accuracy.
Therefore, subjects such as the Hilbert vector-state,
density-matrix operators, amplitude equations, Liouville equation,
coherent laser radiation, free-electron laser, Dyson-chronological
operator, subspace projection, perturbation theory, stochastic
density-matrix equations, time-dependent SchrAdinger equation,
partial-wave analysis, spherical-harmonics expansions, basis and
grid wavefunction expansions, ionization, electron kinetic-energy
and angular distributions are presented within the context of
laser-atom quantum dynamics.
Emerging Topics in Computational Electromagnetics in Computational
Electromagnetics presents advances in Computational
Electromagnetics. This book is designed to fill the existing gap in
current CEM literature that only cover the conventional numerical
techniques for solving traditional EM problems. The book examines
new algorithms, and applications of these algorithms for solving
problems of current interest that are not readily amenable to
efficient treatment by using the existing techniques. The authors
discuss solution techniques for problems arising in nanotechnology,
bioEM, metamaterials, as well as multiscale problems. They present
techniques that utilize recent advances in computer technology,
such as parallel architectures, and the increasing need to solve
large and complex problems in a time efficient manner by using
highly scalable algorithms.
This book highlights a series of new itinerant electron models
proposed based on the experimental results of electron spectra
obtained since 1970. Although conventional magnetic ordering models
were established before 1960, many problems remain to be solved.
The new models in this book include an O 2p itinerant electron
model for magnetic oxides, a new itinerant electron model for
magnetic metals, and a Weiss electron pair model for the origin of
magnetic ordering energy of magnetic metals and oxides. With these
models, the book explains typical magnetic ordering phenomena
including those that cannot be explained using conventional models.
These new models are easier to understand than the conventional
magnetic ordering models.
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