Natural Electromagnetic Phenomena below 30 kc/s
Author: David Franklin Bleil
Publisher: Springer
Published: 2013-11-11
Total Pages: 472
ISBN-13: 1489964258
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Author: David Franklin Bleil
Publisher: Springer
Published: 2013-11-11
Total Pages: 472
ISBN-13: 1489964258
DOWNLOAD EBOOKAuthor:
Publisher:
Published: 1967-11
Total Pages: 874
ISBN-13:
DOWNLOAD EBOOKAuthor: Michael Persinger
Publisher: Springer Science & Business Media
Published: 2012-12-06
Total Pages: 320
ISBN-13: 1468490044
DOWNLOAD EBOOKRecent emphasis upon the importance of the physical environment has made science and the public even more cog nizant of the many components of the biosphere. While much attention has been given to ionizing electromagnetic stimuli which causes blatant and unalterable changes in biological systems, relatively little research has been concerned with those electromagnetic signals whose frequencies overlap with time-varying processes in living organisms. Extremely low frequency (ELF) electromagnetic fields can occur as waves between about I Hz to 100 Hz or as short pulses within this range of very low frequency (VLF) and higher frequency sources. The natural occurrence of ELF signals is associated with weather changes, solar disturbances and geophysical ionospheric perturbations. Man-made sources have also been reported. Certain physical properties of ELF signals make them excellent candidates for biologically important stimuli. Unlike many other weather components, ELF signals have the capacity to penetrate structures which house living organ isms. ELF wave configurations allow long distance propaga tional capacities without appreciable attenuation of inten sity, thus making them antecedent stimuli to approaching weather changes. Most importantly, ELF signals exhibit the frequencies and wave forms of bio-electrical events that occur within the brain and body. Thus resonance inter actions between animal and nature become attractive possi bilities.
Author: Wallace Hall Campbell
Publisher:
Published: 1970
Total Pages: 52
ISBN-13:
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Publisher:
Published: 1967
Total Pages: 636
ISBN-13:
DOWNLOAD EBOOKAuthor: Vladimir A. Rakov
Publisher: Cambridge University Press
Published: 2007-01-08
Total Pages: 1485
ISBN-13: 1107268559
DOWNLOAD EBOOKLightning: Physics and Effects is the first book that covers essentially all aspects of lightning, including lightning physics, lightning protection and the interaction of lightning with a variety of objects and systems as well as with the environment. It is written in a style that will be accessible to the technical non-expert and is addressed to anyone interested in lightning and its effects. This will include physicists, engineers working in the power, communications, computer and aviation industries, meteorologists, atmospheric chemists, foresters, ecologists, physicians working in the area of electrical trauma and architects. This comprehensive reference volume contains over 300 illustrations, 70 tables containing quantitative information and a bibliography of more than 6000 references.
Author: Arctic Institute of North America
Publisher:
Published: 1953
Total Pages: 1644
ISBN-13:
DOWNLOAD EBOOKAuthor: United States. National Bureau of Standards
Publisher:
Published: 1965
Total Pages: 934
ISBN-13:
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Publisher:
Published: 1966
Total Pages: 598
ISBN-13:
DOWNLOAD EBOOKAuthor: Janis Galejs
Publisher: Elsevier
Published: 2013-10-22
Total Pages: 378
ISBN-13: 1483159566
DOWNLOAD EBOOKTerrestrial Propagation of Long Electromagnetic Waves deals with the propagation of long electromagnetic waves confined principally to the shell between the earth and the ionosphere, known as the terrestrial waveguide. The discussion is limited to steady-state solutions in a waveguide that is uniform in the direction of propagation. Wave propagation is characterized almost exclusively by mode theory. The mathematics are developed only for sources at the ground surface or within the waveguide, including artificial sources as well as lightning discharges. This volume is comprised of nine chapters and begins with an introduction to the fundamental concepts of wave propagation in a planar and curved isotropic waveguide. A number of examples are presented to illustrate the effects of an anisotropic ionosphere. The basic equations are summarized and plane-wave reflection from a dielectric interface is considered, along with the superposition of two obliquely incident plane waves. The properties of waveguide boundaries are implicitly represented by Fresnel reflection coefficients. Subsequent chapters focus on boundaries of the terrestrial guide; lightning discharges as a natural source of extremely-low-frequency and very-low-frequency radiation; and the mode theory for waves in an isotropic spherical shell. This book will be a useful resource for students and practitioners of physics.