Gravity category: 273 books

This book introduces an analytic method to describe the shadow of black holes. As an introduction, it presents a survey of the attempts to observe the shadow of galactic black holes. Based on a detailed discussion of the Plebański–Demiański class of space-times, the book derives analytical formulas...

After A. Ungar had introduced vector algebra and Cartesian coordinates into hyperbolic geometry in his earlier books, along with novel applications in Einstein’s special theory of relativity, the purpose of his new book is to introduce hyperbolic barycentric coordinates, another important concept...

An updated classic that recounts the long hunt for Einstein’s predicted gravitational waves—and celebrates their recent discovery In February 2016, astronomers announced that they had verified the last remaining prediction of Einstein’s general theory of relativity—vibrations in space-time, called...

"Every one now admits that the Ptolemaic system, which regarded the earth as the centre of all things, belongs to the dark ages. But to our dismay we have discovered that the same geocentric outlook still permeates modern physics through and through, unsuspected until recently. It has been left...

On 14 September 2015, after 50 years of searching, gravitational waves were detected for the first time and astronomy changed for ever. Until then, investigation of the universe had depended on electromagnetic radiation: visible light, radio, X-rays and the rest. But gravitational waves –...

Does Einstein's theory, recent test results and detectors prove that gravitational waves exist and propagate at the speed of light? The answer is no. From searches on Google, I summarize knowledge of electromagnetic waves, gravitational waves, recent test results. I then make analysis and present conclusions.

Black holes are theoretically hypothesized astronomical objects in all theories of gravitation. By definition, black holes emit no photons and, therefore, all information about black holes is being sought indirectly, by formulating theories and seeking observations. The likelihood of observing and...

Die Quantenphysik steckt voller überraschender, seltsamer, ja befremdlicher Phänomene, die sich dem gesunden Menschenverstand zu entziehen scheinen. Teilchen, die sich an mehreren Orten zugleich befinden, ein Vakuum, das nicht leer ist, Computer, die rechnen, ohne die Aufgabe zu kennen,...

¡A los lectores les encantará esta biografía emocionante sobre la vaquera famosa, Annie Oakley! A través de imágenes coloridas, texto útil, un glosario e índice accesibles y línea de tiempo de la vida de Annie, los lectores descubrirán las cosas increíbles que Annie podría hacer con un...

The book is an overview of the major subfields and concepts in physics, including a brief outline of the history of physics and its subfields. Physics (from Greek from φυσικός (phusikos): natural, from φύσις (fysis): Nature) is the science of Nature in the broadest sense. Physicists...

This book tracks the history of the theory of relativity through Einstein’s life, with in-depth studies of its background as built upon by ideas from earlier scientists. The focus points of Einstein’s theory of relativity include its development throughout his life; the origins of his ideas and...

In this compendium of essays, some of the world’s leading thinkers discuss their conceptions of space and time, as viewed through the lens of their own discipline. With an epilogue on the limits of human understanding, this volume hosts contributions from six or more diverse fields. It presumes...

How well do Newton’s and Einstein’s theories explain Kepler’s observations of planetary orbits? Do Newton’s laws of motion apply in Newton’s gravitation? Are Kepler’s Newton’s and Einstein’s laws universal? Does Einstein's theory replace Newton's theory?Newton’s laws of...