X-ray vision at first was the revival of the phantasmagoria and ground-penetrating sight of earlier centuries attached to the new technology of X-rays in the early twentieth century. The image-idea of the existence of rays that allow prepared eyes to see into clothing, through walls and into the earth, not feasible in fact, generated fictions and surrogates of how living beings would experience such an ability, what they would do with it and what it would do to them. Expressing both a need and a desire, X-ray vision underwent its own development gathering elements of play, inquiry and assault independent of X-ray technology but converging with microscopy, telescopy, television and surveillance._,

In 1865, British polymath Francis Galton published his initial thoughts about the scientific field that would become &lsquo,eugenics.&rsquo, The same year, Russian physician Vasilii Florinskii addressed similar issues in a sizeable treatise, entitled Human Perfection and Degeneration. Initially unheralded, Florinskii&rsquo,s book would go on to have a remarkable afterlife in twentieth- and twenty-first-century Russia. In this lucid and insightful work, Nikolai Krementsov argues that the concept of eugenics brings together ideas, values, practices, and fears energised by a focus on the future. It has proven so seductive to different groups over time because it provides a way to grapple with fundamental existential questions of human nature and destiny. With and Without Galton develops this argument by tracing the life-story of Florinskii&rsquo,s monograph from its uncelebrated arrival amid the Russian empire&rsquo,s Great Reforms, to its reissue after the Bolshevik Revolution, its decline under Stalinism, and its subsequent resurgence

The realities of war could be burdensome to learn by young readers However they need to be studied to create informed decisions when they mature This book discusses the warfare that used the science of splitting atoms How did it happen What is the extent of damage of such warfare Grab a copy today

You see magnets on some toys Perhaps the most common of which would be the ref magnets with letters shapes and numbers too But this book will introduce magnets in an entirely different scale Allow your child to read and learn on hisher own pace Do not pressure himher and just allow lessons to flow freely and be absorbed in a comfortable manner Secure a copy of this book today

This comprehensive text thoroughly covers fundamental wave propagation behaviors and computational techniques for waves in inhomogeneous media. The author describes powerful and sophisticated analytic and numerical methods to solve electromagnetic problems for complex media and geometry as well. Problems are presented as realistic models of actual situations which arise in the areas of optics, radio wave propagation, geophysical prospecting, nondestructive testing, biological sensing, and remote sensing. Key topics covered include

In this work we discuss the propagation of the wave radiation focused by the axicon, and analyze optical discharges created by laser Besselian beam in gases, fluids and on solid surfaces. We consider formation processes of discharges, properties and structures of the plasma channels. Also, we describe the methods of research of Besselian beams, breakdowns, discharges and plasmas created by the beams.The optical discharge arisen under the action of the Bessel beam field Jn(r) of solid (n = 0) or tubular (n 0) configuration turns into the plasma solid or tubular cylinder (waveguide), thereof Rayleigh length being large, Zr = d2/ 1, at the diameter of the diffraction limit. While the heating pulse front is short, the breakdown wave propagates along the beam in a mode of running focus at a velocity exceeding the light speed. The channel plasma parameters at the initial stage depend on the Besselian beam intensity level and distribution. The radial expansion velocity of the plasma channel is approximately in general agreement with the theory of cylindrical strong explosion.The channel axial symmetry provides important advantage over the plasma of spherical symmetry, for it implies effective application of magnetic field. Besselian beams can be formed by electromagnetic radiation of any frequency range, as well as by wave radiation of any other nature, e.g. acoustic.The capability of the plasma parameter distribution and that of the channel structure to be varied are important for applications. Examples of beam and plasma channel applications are considered in the book.

Voltage Stability is a relatively recent and challenging problem in Power Systems Engineering. It is gaining in importance as the trend of operating power systems closer to their limits continues to increase.Voltage Stability of Electric Power Systems presents a clear description of voltage instability and collapse phenomena. It proposes a uniform and coherent theoretical framework for analysis and covers state-of-the-art methods. The book describes practical methods that can be used for voltage security assessment and offers a variety of examples.

Els darrers anys s''ha esdevingut un ràpid creixement de la presència d''acceleradors de partícules en la societat moderna. Avui dia s''utilitzen de manera rutinària als hospitals, per als tractament