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Books > Science & Mathematics > Physics > Classical mechanics > Sound, vibration & waves (acoustics)
This is a reproduction of a book published before 1923. This book
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++++ The below data was compiled from various identification fields
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++++ Der Schall: Acht Vorlesungen Gehalten In Der Royal Institution
Von Grossbritannien. Autorisirte Deutsche Ausgabe 3 John Tyndall
Vieweg, 1869 Music; Recording & Reproduction; Music / Recording
& Reproduction; Science / Acoustics & Sound; Sound
Like rocket science or brain surgery, quantum mechanics is
pigeonholed as a daunting and inaccessible topic, which is best
left to an elite or peculiar few. This classification was not
earned without some degree of merit. Depending on perspective;
quantum mechanics is a discipline or philosophy, a convention or
conundrum, an answer or question. Authors have run the gamut from
hand waving to heavy handed in hopes to dispel the common beliefs
about quantum mechanics, but perhaps they continue to promulgate
the stigma. The focus of this particular effort is to give the
reader an introduction, if not at least an appreciation, of the
role that linear algebra techniques play in the practical
application of quantum mechanical methods. It interlaces aspects of
the classical and quantum picture, including a number of both
worked and parallel applications. Students with no prior experience
in quantum mechanics, motivated graduate students, or researchers
in other areas attempting to gain some introduction to quantum
theory will find particular interest in this book.
Optical properties, particularly in the infrared range of
wavelengths, continue to be of enormous interest to both material
scientists and device engineers. The need for the development of
standards for data of optical properties in the infrared range of
wavelengths is very timely considering the on-going transition of
nano-technology from fundamental R&D to manufacturing.
Radiative properties play a critical role in the processing,
process control and manufacturing of semiconductor materials,
devices, circuits and systems. The design and implementation of
real-time process control methods in manufacturing requires the
knowledge of the radiative properties of materials. Sensors and
imagers operate on the basis of the radiative properties of
materials. This book reviews the optical properties of various
semiconductors in the infrared range of wavelengths. Theoretical
and experimental studies of the radiative properties of
semiconductors are presented. Previous studies, potential
applications and future developments are outlined. In Chapter 1, an
introduction to the radiative properties is presented. Examples of
instrumentation for measurements of the radiative properties is
described in Chapter 2. In Chapters 3-11, case studies of the
radiative properties of several semiconductors are elucidated. The
modeling and applications of these properties are explained in
Chapters 12 and 13, respectively. In Chapter 14, examples of the
global infrastructure for these measurements are illustrated.
This book reviews basic electromagnetic (EM) wave theory and
applies it specifically to lasers in order to give the reader not
only tangible examples of how the theory is manifested in real
life, but also practical knowledge about lasers, and their
operation and usage. The latter can be useful for those involved
with using lasers. As a short treatise on this subject matter, this
book is not intended to dwell deeply into the details of EM waves
nor lasers. A bibliography is provided for those who wish to
explore in more depth the topics covered in this book. Rather the
aim of this book is to offer a quick overview, which will allow the
reader to gain a competent general understanding of EM waves and
lasers.
Sound-Power Flow: A Practitioner's Handbook for Sound Intensity is
a guide for practitioners and research scientists in different
areas of acoustical science. There are three fundamental quantities
in acoustics: sound pressure, sound particle velocity, and sound
intensity. This book is about sound intensity and demonstrates the
advantages and uses of acoustical sensing compared with other forms
of sensing. It describes applications such as: measuring total
sound power; directional hearing of humans and mammals;
echolocation; measuring sound-power flow in ducts; and uses of
non-contact, focused, high-frequency, pulse-echo ultrasonic probes.
This book presents computational approaches using standard
mathematics, and relates these to the measurement of sound-power
flow in air and water. It also uses linear units rather than
logarithmic units - this making computation in acoustics simpler
and more accessible to advanced mathematics and computing. The book
is based on work by the author and his associates at General
Motors, the University of Mississippi, and Sonometrics.
A comprehensive and updated overview of the theory, algorithms and
applications of for electromagnetic inverse scattering problems
Offers the recent and most important advances in inverse scattering
grounded in fundamental theory, algorithms and practical
engineering applications Covers the latest, most relevant inverse
scattering techniques like signal subspace methods, time reversal,
linear sampling, qualitative methods, compressive sensing, and
noniterative methods Emphasizes theory, mathematical derivation and
physical insights of various inverse scattering problems Written by
a leading expert in the field
In diesem Band der Reihe Fachwissen Technische Akustik werden
einleitend die moeglichen Messverfahren beschrieben. Dabei stehen
Schalldruckmessungen und Schallpegelmessungen sowie deren Bewertung
und Verfahren mittels Fourieranalyse im Mittelpunkt. Es werden die
klassische Anregung mit Rauschen, das Sweep-Verfahren, die
MLS-Technik, die Noise-Applikation, die TDS-Technik und das
quellensignalunabhangige Messverfahren mit Echtzeitentfaltung
erlautert. Anschliessend wird naher auf die vorhandenen
Messparameter eingegangen. Dieser Abschnitt befasst sich mit
Absolut- und Relativmessungen, Eichung, Messfehlern und
-optimierung, dem Messsystem und der Messkette, ausseren Einflussen
und dem Postprozessing. Bei den raumakustischen Messungen wird auf
die Festlegung der Messsorte sowie auf den ublichen Messaufbau
eingegangen. Es werden Zeitgroessen, Frequenzgroessen,
Wasserfalldarstellung und spezielle Anwendungen wie
Insitu-Messungen und die Messung der Scattering-Koeffizienten
erlautert. Die Messungen in der Beschallungstechnik beginnen mit
einer subjektiven Bewertung der vorhandenen Beschallungsqualitat.
Stoerende Nebengerausche werden festgestellt und durch elektrisches
Einmessen beseitigt. Zum akustischen Einmessen gehoert u.a. die
Ermittlung der Schallpegelverteilung, die Messung des
Wiedergabefrequenzganges, die Erlauterung der Messverfahren wie
UEberprufung der Koharenz der eintreffenden Wellenfronten, die
objektive Ermittlung der Verstandlichkeit, die Schallpegelmessung,
die Schallpegelverteilung sowie spezielle Messungen. Im Anhang sind
Messverfahren auf Hardware- und Softwarebasis zusammengestellt.
This book is an introduction to wave dynamics as they apply to
earthquakes, among the scariest, most unpredictable, and deadliest
natural phenomena on Earth. Since studying seismic activity is
essentially a study of wave dynamics, this text starts with a
discussion of types and representations, including wave-generation
mechanics, superposition, and spectral analysis. Simple harmonic
motion is used to analyze the mechanisms of wave propagation, and
driven and damped systems are used to model the decay rates of
various modal frequencies in different media.Direct correlation to
earthquakes in California, Mexico, and Japan is used to illustrate
key issues, and actual data from an event in California is
presented and analyzed. Our Earth is a dynamic and changing planet,
and seismic activity is the result. Hundreds of waves at different
frequencies, modes, and amplitudes travel through a variety of
different media, from solid rock to molten metals. Each media
responds differently to each mode; consequently the result is an
enormously complicated dynamic behavior. Earthquakes should serve
well as a complimentary text for an upper-school course covering
waves and wave mechanics, including sound and acoustics and basic
geology. The mathematical requirement includes trigonometry and
series summations, which should be accessible to most upper-school
and college students. Animation, sound files, and videos help
illustrate major topics.
Sound-Power Flow: A practitioner's handbook for sound intensity is
a guide for practitioners and research scientists in different
areas of acoustical science. There are three fundamental quantities
in acoustics: sound pressure, sound particle velocity, and sound
intensity. This book is about sound intensity and demonstrates the
advantages and uses of acoustical sensing compared with other forms
of sensing. It describes applications such as: measuring total
sound power; directional hearing of humans and mammals;
echolocation; measuring sound-power flow in ducts; and uses of
non-contact, focused, high-frequency, pulse-echo ultrasonic probes.
This book presents computational approaches using standard
mathematics, and relates these to the measurement of sound-power
flow in air and water. It also uses linear units rather than
logarithmic units - this making computation in acoustics simpler
and more accessible to advanced mathematics and computing. The book
is based on work by the author and his associates at General
Motors, the University of Mississippi, and Sonometrics.
Surface acoustic waves (SAWs) demonstrate simplicity of their
excitation and receipt, as well as their availability to all
propagation ways of signal branching and processing. SAW devices
are divided into several main classes: filters for signal
processing at intermediate frequencies, delay lines, resonators,
filters with low losses for the input circuits of receiver, and
antenna duplexers for the connected receivers. The SAW devices are
not only able to conduct an effective signal processing, but also
serve as a basis for multi-subsystems (matched filtering, signal
processing, real-time Fourier transform processors, etc.).
Additionally, SAW filters help scientists to realise the wide
variety of frequency characteristics. Besides their unique
electrical characteristics, SAW devices favorably differ from their
analogs in small size, mechanical strength and high reliability,
due to the quality of raw materials and their processing. The use
of the photolithography and the achievements of group
microelectronic technology in their production allow a researcher
to achieve good reproducibility of parameters at relatively low
cost. In addition, currently SAW devices are widely used in various
sensors based on the SAW radio frequency identification. This book
presents an attempt to generalise a multi-year experience on
R&D of SAW devices. It develops original approaches directed at
discovering solutions of technical problems, as development of
various SAW devices are patented in Russia. Moreover, the book
presents some experimental and theoretical research results.
This book is an introduction to wave dynamics as they apply to
earthquakes, among the scariest, most unpredictable, and deadliest
natural phenomena on Earth. Since studying seismic activity is
essentially a study of wave dynamics, this text starts with a
discussion of types and representations, including wave-generation
mechanics, superposition, and spectral analysis. Simple harmonic
motion is used to analyze the mechanisms of wave propagation, and
driven and damped systems are used to model the decay rates of
various modal frequencies in different media.Direct correlation to
earthquakes in California, Mexico, and Japan is used to illustrate
key issues, and actual data from an event in California is
presented and analyzed. Our Earth is a dynamic and changing planet,
and seismic activity is the result. Hundreds of waves at different
frequencies, modes, and amplitudes travel through a variety of
different media, from solid rock to molten metals. Each media
responds differently to each mode; consequently the result is an
enormously complicated dynamic behavior. Earthquakes should serve
well as a complimentary text for an upper-school course covering
waves and wave mechanics, including sound and acoustics and basic
geology. The mathematical requirement includes trigonometry and
series summations, which should be accessible to most upper-school
and college students. Animation, sound files, and videos help
illustrate major topics.
This monograph presents a concise, comprehensive summary of present
knowledge on the propagation of acoustic waves in bends and in
systems containing bends. It covers both the characteristics and
limitations of sound propagation and the information now available
on the design and application of bends and elbows in various
acoustical systems.
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