Evolution of Physics

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From the Authors' Preface Before you begin reading, you rightly expect some simple questions to be answered. For what purpose has this book been written? Who is the imaginary reader for whom it is meant? It is difficult to begin by answering these questions clearly and convincingly. This would be much easier, though quite superfluous, at the end of the book. We find it simpler to say just what this book does not intend to be. We have not written a textbook of physics. Here is no systematic course in elementary physical facts and theories. Our intention was rather to sketch in broad outline the attempts of the human mind to find a connection between the world of ideas and the world of phenomena. We have tried to show the active forces which compel science to invent ideas corresponding to the reality of our world. [...] The book is a simple chat between you and us. You may find it boring or interesting, dull or exciting, but our aim will be accomplished if these pages give you some idea of the eternal struggle of the inventive human mind for a fuller understanding of the laws governing physical phenomena. *** P2P Editor Bibliographic Note The first edition of the book was published in 1938 {Open Library, ID=OL5816183M). The edition on which the source for the present file is based, is undated, and marked 'Scientific Book Club'. The subsequent bibliographic research indicates the probable publication date as 1939 (see WorldCat items 8124880, 721210008; see Google citation for ID=nJClngEACAAJ; see a 1940 review of this precise 'Scientific Book Club' edition at SAO/NASA Astrophysics Data System). The only pictures and physical book description found for the original 1939 book come from Mollan Rare Books, Dublin, Ireland via AbeBooks. Those pictures were used for reconstructing the cover used in the present P2P digital edition.

Author(s): Albert Einstein, Leopold Infeld
Edition: Scientific Book Club
Publisher: Cambridge University Press
Year: 1938, 1939 (?)

Language: English
Commentary: Based on the Library Genesis djvu file md5=AC1C1782B27ECBD24FEAF221908B4F75, Kolxo3, added 2009.07.20. The edition is wrongly identified (see 'description'). The file is identical to the Internet Archive ID=evolutionofphysi033254mbp, also referenced by Wikipedia. This edition/version is probably the only one available on P2P venues. The file has been completely reworked in ABBYY FineReader, to produce the raw pdf and a companion html (see Library Genesis). The file was OCR-ed and verified in ABBYY, images were cleaned of underlinings and other artifacts with SnagIt, pdf bookmarked, paginated and metadata-ed in Acrobat. See 'Propeties' for full details & links. Cover reconstructed from pictures of the original 1939 book coming from Mollan Rare Books, Dublin, Ireland via AbeBooks. Many thanks to the original scanners, uploaders, and the owners of the mentioned websites.[UL]
Pages: x+337

I. THE RISE OF THE MECHANICAL VIEW
The great mystery story 3
The first clue 5
Vectors 12
The riddle of motion 19
One clue remains 34
Is heat a substance? 38
The switchback 47
The rate of exchange 51
The philosophical background 55
The kinetic theory of matter 59

II. THE DECLINE OF THE MECHANICAL VIEW
The two electric fluids 71
The magnetic fluids 83
The first serious difficulty 87
The velocity of light 94
Light as substance 97
The riddle of colour 100
What is a wave? 104
The wave theory of light 110
Longitudinal or transverse light waves? 120
Ether and the mechanical view 123

III. FIELD, RELATIVITY
The field as representation 129
The two pillars of the field theory 142
The reality of the field 148
Field and ether 156
The mechanical scaffold 160
Ether and motion 172
Time, distance, relativity 186
Relativity and mechanics 202
The time-space continuum 209
General relativity 220
Outside and inside the lift 226
Geometry and experiment 235
General relativity and its verification 249
Field and matter 255

IV. QUANTA
Continuity, discontinuity 263
Elementary quanta of matter and electricity 265
The quanta of light 272
Light spectra 280
The waves of matter 286
Probability waves 294
Physics and reality 310

Index 317