Overview

Waves can be divided into two main groups, mechanical and electromagnetic waves. Mechanical waves require a medium to propagate (i.e. these cannot travel through a vacuum). These can be both longitudinal (particles displacement is parallel to the direction of wave propagation) transverse (particle displacement is perpendicular to the direction of wave propagation) waves which properties and characteristics depend on the restoring forces between particles combined with the inertia of the particles. Examples of mechanical waves are acoustic waves, seismic waves and water waves(wind waves). Electromagnetic waves do not require a medium to propagate they consist of periodic oscillations of electrical and magnetic fields. These are transverse waves in free space (vacuum) and in isotropic, homogeneous media. They are generated whenever charged particles are accelerated and can be characterized by either the frequency or wavelength. Examples are radio waves, microwaves, X-rays, light and gamma waves. There are also gravitational waves which are similar to electromagnetic waves in that they also travel through free space as the result of oscillations or movement in gravitational fields. The first part of this book is centered on the propagation of sea waves and the coupling between wave processes in the ocean, atmosphere, and the solid Earth [1-9]. It starts with a numerical simulation of water waves and interaction between these waves and coastal structures (breakwaters). Next, it overviews transoceanic propagation tsunami waves and ocean infragravity as well as challenge behind detection and the understanding of high amplitude sea waves generation mechanism. It ends with the analysis of long-period ground motions, earthquakes in Arabian Gulf and Kanto Basin. The second part of the book focuses on magnetoacoustic waves in the sun’s atmosphere and the gravitational waves in space [10-12]. The third part returns to Earth by focusing on the understanding of electromagnetic waves and waveguide propagation for applications in microcircuits design, electro-mechanical systems, spintronics and many-body quantum systems [13-17]. The last part includes the different applications of wave motion theory in the biomedical engineering, neurosciences, biomechanics and wave-like motions in nature [18-22].

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9781680943696

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Olga Moreira obtained her Ph.D. in Astrophysics from the University of Liege (Belgium) in 2010, her BSc. in Physics and Applied Mathematics from the University of Porto (Portugal). Her post-graduate travels and international collaborations with the European Space Agency (ESA) and European Southern Observatory (ESO) led to great personal and professional growth as a scientist. Currently, she is working as an independent researcher, technical writer, and editor in the fields of Mathematics, Physics, Astronomy and Astrophysics.

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