An Echo Of The Evolving Times
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Exploring the Quantum
The counter-intuitive aspects of quantum physics have been long illustrated by thought experiments, from Einstein's photon box to Schrödinger's cat. These experiments have now become real, with single particles - electrons, atoms, or photons - directly unveiling the strange features of the quantum. State superpositions, entanglement and complementarity define a novel quantum logic which can be harnessed for information processing, raising great hopes for applications. This book describes a class of such thought experiments made real. Juggling with atoms and photons confined in cavities, ions or cold atoms in traps, is here an incentive to shed a new light on the basic concepts of quantum physics. Measurement processes and decoherence at the quantum-classical boundary are highlighted. This volume, which combines theory and experiments, will be of interest to students in quantum physics, teachers seeking illustrations for their lectures and new problem sets, researchers in quantum optics and quantum information.
The Evolution of Music Through Culture and Science
The Evolution of Music by Culture and Science aims to recognise the impact of science on music, why it occurs, how we respond, and even to tentatively see if we can predict future developments. Technology has played an immense role in the development of music as it has enabled the production of new sounds, introduced new instruments and continuously improved and modified existing ones. Printing, musical notation, and modern computer aids to composition, plus recordings and electronic transmission have equally enabled us to have access to music from across the world. Such changes, whether just more powerful pianos, or new sounds as from the saxophone, have inspired composers and audiences alike. Acoustics and architecture play similar roles as they changed the scale and performance of concert halls, and with the advent of electronics, they enabled vast pop music festivals. No aspect of modern music making has been untouched by the synergy with scientific innovation. This is not a one-way interaction as the early attempts to make recordings were a major motivating force to design the electronics for amplifiers and these in turn inspired and enabled the designs of semiconductor electronics and modern computer technology. To appreciate the impact of technology on music does not require any prior scientific background as the concepts are invariably extremely simple and are presented here without technical detail. Understanding music and why we like different genres is far more complex, as this involves our personal background and taste. Both aspects change with time, and there is no contradiction in enjoying items as diverse as baroque madrigals, symphonies, jazz or pop music, or music from totally different cultures.
Evolution's Chimera
Author: David Jacobs
language: en
Publisher: Juta and Company (Pty) Ltd
Release Date: 2016-07-13
In Greek mythology, the chimera was a hybrid monster. Similarly, bats look like they have the body of a mouse, the face of a gargoyle or fox, and the wings of a pterosaur, giving rise to this book’s title. Evolution’s Chimera describes the amazing physical and behavioural adaptations of bats, using them to illustrate the processes of natural evolution. Bats comprise a quarter of all mammals in the world and are the only mammals that can fly. They occupy every landmass and almost every habitat on Earth. They make up the second-most diverse group of mammals on the planet, numbering more than 1 270 species. And they are among the oldest mammals. They are therefore ideal for the study of how evolution generates biological diversity. David Jacobs, an expert on bats currently researching animal evolution, gives an accessible account of evolution using bats as a case study, from adaptation, competition and evolutionary arms races to the role of sensory systems in the adaptation of species. He explores why bats hang upside down, why they are so small and the diversity of their diets, from insects to blood. Based on research done over the last 10 years this book provides a review of the latest research into evolution and biology, indicates what research still needs to be done and introduces new hypotheses for testing.