02383    a2200253   4500003000800000005001700008007000300025008004100028020001800069040001800087041000900105050002300114100002700137245013300164250002800297260004200325300004200367500008900409505101200498520052201510650002402032700004202056700003102098BJBSDDR20240509154400.0ta250124s2017    nyu           00| 0 eng d  a9780735213937  bspa cBJBSDDR  aeng 14aQC 178bR873r 20171 aRovelli, Carlo,d1956-10aReality is not what it seems : bthe journey to quantum gravity /cCarlo Rovelli ; translation by Simon Carnell and Erica Segre.  aFirst American edition.  aNew York : bRiverhead Books, c2017.  a280 pages : billustration ; c21 cm.  aOriginally published in Italian under the title: La Realtà non è come ci appare.  aGrains ; Is there a limit to divisibility? ; The nature of things -- The classics ; Isaac and the little moon ; Michael: fields and light -- Albert ; The extended present ; The most beautiful of theories ; Mathematics or physics? ; The cosmos -- Quanta ; Albert again ; Niels, Werner, and Paul ; Fields and particles are the same thing ; Quanta 1: Information is finite ; Quanta 2: Indeterminacy ; Quanta 3: Reality is relation ; But do we really understand? -- Spacetime is quantum ; Matvei ; John ; The loop's first steps -- Quanta of space ; Spectra of volume and area ; Atoms of space ; Spin networks -- Time does not exist ; Time is not what we think it is ; The candle chandelier and the pulse ; Spacetime sushi spinfoam ; What is the world made of? -- Beyond the big bang ; The master ; Quantum cosmology -- Empirical confirmations? ; Signals from nature ; A window onto quantum gravity -- Quantum black holes -- The end of infinity -- Information ; Thermal time ; Reality and information -- Mystery.  a"What are the elementary ingredients of the world? Do time and space exist? And what exactly is reality? In elegant and accessible prose, theoretical physicist Carlo Rovelli leads us on a wondrous journey from Democritus to Einstein, from Michael Faraday to gravitational waves, and from classical physics to his own work in quantum gravity. As he shows us how the idea of reality has evolved over time, Rovelli offers deeper explanations of the theories he introduced so concisely in Seven Brief Lessons on Physics". 4aGravedad cuántica1 aCarnell, Simon, d1962- etranslation1 aSegre, Erica etranslation