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History of Geomorphology and Quaternary Geology – Special Publication no 301
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This book deals with various interesting aspects of the histories of geomorphology and Quaternary geology in different parts of the world. The papers cover a range of topics: the origin of the term ‘Quaternary’, histories of ideas and debates relating to aspects of fluvial geomorphology (USA and Australia), glacial geomorphology and glaciation (Northern Europe, the Baltic countries, Russia, Iceland, and New Zealand), desert dunes and the geology of Australia, peneplains in China, a palaeo-Tokyo Bay in Japan, together with biographies of Charles Cotton (New Zealand), Valerija Cepulyte (Lithuania) and Ceslovas Pakuckas (Lithuania and Poland) that highlight their respective contributions to the disciplines of geom… More >>
History of Geomorphology and Quaternary Geology – Special Publication no 301
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Signal Velocity: Special Relativity, Wave, Group Velocity, Front Velocity, Dispersion , Phase Velocity, Velocity, Wavenumber, Dispersion Relation, Group Delay and phase Delay
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High Quality Content by WIKIPEDIA articles! The signal velocity is the speed at which a wave carries information. It describes how quickly a message can be communicated (using any particular method) between two separated parties. Every signal velocity is always slower than (or equal to) the speed of a light pulse in a vacuum (by Special Relativity). In the vast majority of cases, signal velocity is equal to group velocity (the speed of a short “pulse” or of a wave-packet’s middle or “envelope”). However, in a few special cases (e.g., media designed to amplify the front-most parts of a pulse and then attenuate the back section of the pulse), group velocity can exceed even the vacuum speed of light. Signal velo… More >>
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Faster than light: Speed of light, ?erenkov radiation, Special relativity, Doubly-special relativity, Variable speed of light, Quantum tunnelling, Planck length, Wormhole, Tachyon
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Faster than light – Speed of light, ?erenkov radiation, Special relativity, Doubly-special relativity, Variable speed of light, Quantum tunnelling, Planck length, Wormhole, Tachyon, Electromagnetic radiation, Group velocity, Superluminal motion, Casimir effect, Delayed choice quantum eraser… More >>
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