What the book is about

     Rovelli explains the core of the 20th century physics in ‘seven small lessons’: first lesson is dedicated to Albert Einstein’s general theory of relativity, second lesson explains quantum mechanics, third lesson is dedicated to the cosmos, fourth lesson is on elementary particles, fifth lesson deals with quantum gravity, the sixth lesson is on probability and the heat of black hole, and last lesson, asks – ‘how is it possible to think about our existence in the light ofphysics?’

First lesson

    Carlo Rovelli one of the world’s leading theoretical physicists, opens the first lesson with an example; using Einstein’s theory of reality, ‘if you are travelling fast, time slows down, so if you leave your friend hanging around while you go for a ride in a rocket that takes you around the world at the speed of light, then when you land, time will have....