Author: United States. President's Committee on Employment of the Physically HandicappedPublisher:
ISBN:
Category : Accidents
Languages : en
Pages : 44
Book Description
Ten Years of Teamwork, 1047-1957
Author: United States. President's Committee on Employment of the Physically HandicappedPublisher:
ISBN:
Category : Accidents
Languages : en
Pages : 44
Book Description
Photons
Author: Klaus HentschelPublisher: Springer
ISBN: 3319952528
Category : Science
Languages : en
Pages : 239
Book Description
This book focuses on the gradual formation of the concept of ‘light quanta’ or ‘photons’, as they have usually been called in English since 1926. The great number of synonyms that have been used by physicists to denote this concept indicates that there are many different mental models of what ‘light quanta’ are: simply finite, ‘quantized packages of energy’ or ‘bullets of light’? ‘Atoms of light’ or ‘molecules of light’? ‘Light corpuscles’ or ‘quantized waves’? Singularities of the field or spatially extended structures able to interfere? ‘Photons’ in G.N. Lewis’s sense, or as defined by QED, i.e. virtual exchange particles transmitting the electromagnetic force? The term ‘light quantum’ made its first appearance in Albert Einstein’s 1905 paper on a “heuristic point of view” to cope with the photoelectric effect and other forms of interaction of light and matter, but the mental model associated with it has a rich history both before and after 1905. Some of its semantic layers go as far back as Newton and Kepler, some are only fully expressed several decades later, while others initially increased in importance then diminished and finally vanished. In conjunction with these various terms, several mental models of light quanta were developed—six of them are explored more closely in this book. It discusses two historiographic approaches to the problem of concept formation: (a) the author’s own model of conceptual development as a series of semantic accretions and (b) Mark Turner’s model of ‘conceptual blending’. Both of these models are shown to be useful and should be explored further. This is the first historiographically sophisticated history of the fully fledged concept and all of its twelve semantic layers. It systematically combines the history of science with the history of terms and a philosophically inspired history of ideas in conjunction with insights from cognitive science.
Migration and Mobility
Author: A.J. BoycePublisher: Taylor & Francis
ISBN: 1000777634
Category : Social Science
Languages : en
Pages : 352
Book Description
Migration and Mobility (1984) examines the biological aspects of population movement, including genetic, anthropometric and psychological aspects. Other contributions deal with geographical and demographic features of human migration. Specific studies are described, and the theoretical framework used to describe population mobility is presented.
The Bill James Historical Baseball Abstract
Author: Bill JamesPublisher:
ISBN:
Category : Sports & Recreation
Languages : en
Pages : 742
Book Description
This volume provides historical statistics & commentary on baseball.
The Monthly Army List
Author: Great Britain. ArmyPublisher:
ISBN:
Category : Retired military personnel
Languages : en
Pages : 2916
Book Description
Statistical Abstract of the United States
Author: Economic Development in Provincial China
Author: Eduard B. VermeerPublisher: Cambridge University Press
ISBN: 0521343925
Category : Business & Economics
Languages : en
Pages : 554
Book Description
This book is a detailed study of the economic developments on the Central Shaanxi province.
Big Ten Conference ... Football Media Guide
Author: Louisiana Sports Record Book
Author: J. CalhounPublisher: Pelican Publishing
ISBN: 9781455607853
Category : Sports
Languages : en
Pages : 114
Book Description
Vietnam
Author: United States. Department of StatePublisher:
ISBN:
Category : United States
Languages : en
Pages : 948
Book Description