Project Gutenberg 2005-01-01 Public domain in the USA. 293 Einstein, Albert 1879 1955 Äther und Relativitäts-Theorie + Geometrie und Erfahrung Englisch Sidelights on Relativity Produced by David Starner, William Fishburne and the Online Distributed Proofreading Team. "Sidelights on Relativity" by Albert Einstein is a scientific publication composed of two addresses delivered in the early 20th century. The book explores the foundational concepts of relativity, addressing topics such as the nature of ether and its relation to gravitational and electromagnetic fields, as well as the implications of different geometries in understanding physical reality. It serves as an accessible introduction to Einstein's revolutionary ideas that reshaped our understanding of space, time, and the nature of the universe. In "Ether and the Theory of Relativity," Einstein examines the historical context of the ether hypothesis and discusses its evolution within physics, ultimately questioning its necessity in light of the special theory of relativity. He explains how the traditional mechanical understanding of the ether was transformed by new insights, leading to the conclusion that the electromagnetic fields could exist independently of a physical medium. In the second address, "Geometry and Experience," Einstein delves into the relationship between geometry and physical reality, reflecting on how practical geometry can only be validated through experiential observation. He argues that while pure mathematical concepts provide a logical basis for geometry, they must be contextualized with physical laws to produce meaningful assertions about the natural world. Through these discussions, Einstein elucidates his groundbreaking views on the interconnectedness of geometry, physics, and our understanding of the universe. (This is an automatically generated summary.) Reading ease score: 44.9 (College-level). Difficult to read. en Relativity (Physics) QC Text Category: Science - Physics 78304 2025-08-03T11:05:19.232083 text/html 74448 2021-01-27T00:45:05 text/html 124458 2025-08-03T11:05:24.017024 application/epub+zip 124139 2025-08-03T11:05:21.826069 application/epub+zip 94478 2025-08-03T11:05:20.764098 application/epub+zip 255581 2025-08-03T11:05:25.662057 application/x-mobipocket-ebook 246433 2025-08-03T11:05:23.376056 application/x-mobipocket-ebook 167553 2022-09-04T05:34:42.281085 application/x-mobipocket-ebook 72730 2025-08-03T11:05:18.992073 text/plain; charset=us-ascii 72939 2014-09-22T10:39:44 text/plain; charset=us-ascii 18277 2025-08-03T11:05:25.791038 application/rdf+xml 14191 2025-08-03T11:05:21.254044 image/jpeg 3884 2025-08-03T11:05:21.006115 image/jpeg 47019 2021-01-27T00:45:05 application/octet-stream application/zip 25204 2014-09-22T10:44:26 application/octet-stream application/zip 123793 2025-08-03T11:05:19.244050 application/octet-stream application/zip Archives containing the RDF files for *all* our books can be downloaded at https://book.klll.cc/wiki/Gutenberg:Feeds#The_Complete_Project_Gutenberg_Catalog en.wikipedia