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1 edition of Casimir acoustics found in the catalog.

Casimir acoustics

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Published by Naval Postgraduate School, Available from National Technical Information Service in Monterey, Calif, Springfield, Va .
Written in English


About the Edition

When the indirect manifestations of the electromagnetic ZPF are interpreted as due to radiation pressure, acoustic noise can render an excellent analog to probe previous as well as recently proposed behavior. An acoustic chamber for isotropic and homogeneous acoustic noise of controllable spectral shape has been built. The noise can be driven up to levels of 130 dB (re 20 microPa) in a band of frequencies up to 50 kHz wide. When driving the system with broadband noise, it will be used (1) to test the Galilean invariance of a spectral shape proportional to the square of the frequency, (2) the force of attraction between parallel plates (analog to Casimir force), (3) the acoustic radiation emitted by a cavity that is made to oscillate at high frequencies (analog to the proposed Casimir radiation), (4) the change in the frequency of oscillation of a pendulum as the noise intensity is varied (analog to the proposed origin of inertia), and (5) the force of attraction between two spheres due to the acoustic shadow that each one casts onto the other (analog to van der Waals force and the proposed origin of gravitation)

Edition Notes

StatementRobert T. Susbilla
The Physical Object
Paginationviii, 31 p. ;
Number of Pages31
ID Numbers
Open LibraryOL25266526M

In Chapter 5, I Casimir acoustics book discuss the control of non-equilibrium Casimir force in the presence of a non-zero chemical potential of photons. But measuring this so-called Casimir force is challenging, as the objects must be aligned with nanoscale precision. Working with his group and NCSA in yearthey have solved record-size electromagnetic scattering problems with 20 million unknowns using fast algorithms and matrix-free methods. There is very little experimental evidence to support this viewpoint. The distinction is clear-cut, but not always obvious.

The Casimir effect in rectangular boxes ; Casimir acoustics book. This thesis explores one of the most promising approaches for the control of radiative heat transfer and the Casimir force, by regulating the chemical potential of photons. An electron approaching a barrier has to be represented as a wave-train. The dispute was exacerbated by the appearance in of the mixtape Sorry 4 the Wait 2. A solution to the wave equation having an imaginary wavenumber does not propagate as a wave but falls off exponentially, so the field excited at that lower frequency is considered evanescent. They then measured the force between two aluminium plates 15 cm in diameter as the separation between them was increased.

Measurement of the Casimir-Polder force ; Casimir acoustics book understanding of physics makes for more realistic flight simulatorsvideo gamesand movies, and is often critical in forensic investigations. Cash, American author, editor, and journalist, best known for his single book, The Mind of the Southa classic analysis of white Southern temperament and culture. Then the performance of the device in the idea case, and also the impacts of all possible non-idealities in the device are also discussed in detail.


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Casimir acoustics by Robert Tayag Susbilla Download PDF Ebook

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In Chapter 1, I will give a brief introduction to chemical potential of photons and discuss its implications. In this way, the theoretical and experimental components of physics and science in general interact with each other and push each other forward to develop new areas of knowledge.

The acoustic equivalent to the vacuum electromagnetic field is noise that contains a broad range of wavelengths. Then I will discuss the radiative heat transfer in the near-field regime, and how it can be controlled in the presence of an external bias that is used to regulate the chemical potential of photons.

Mathematics statements have to be only logically true, while predictions of physics statements must match observed and experimental data.

Learn how and when to remove this template message In many cases one cannot simply say that a field is or is not evanescent. In this chapter, a very detailed theoretical framework based on fluctuational electromagnetism is presented, and a very simple analytical model that can be used to evaluate the performance of the device is also developed.

Editor-in-Chief, Progress in Electromagnetic Research, present. This is one illustration of the inexactness of the term. As indicated above, "tunneling-type" evanescent-wave phenomena occur in other contexts too.

Casey, powerful and controversial director of the U. American musician Johnny Cash, American singer and songwriter whose work broadened the scope of country and western music.

Carter was introduced to country music, specifically Appalachian folk songs, at a very young age. Synopsis: Casimir Force Between Two Spheres January 23, Researchers use an atomic force microscope to measure the Casimir force between two spheres, paving the way for studying the force acting between objects of any shape.

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