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User Review  - DzejnCrvena - LibraryThing

I got the version with no pictures in it, so I can't understand some concepts mentioned in the book. May reread later when I become (more) interested in physics or astronomy. It's one of the books I just picked randomly, even though my significant other mentioned it at least once. Read full review

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this i am interested tro read this book

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Very nice book.😃😁💟!!!

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This book carries a lot of nostalgia. I remember my father purchasing the book and spending time to read over that. To be very honest, it was about 12 years from now. My knowledge on physics, rather on cosmology was very limited. Years passed in, but I never looked back to understand the book. I spent hours understanding the concepts of physics, tensors, linear algebra, Minkowski's space time and diagram, general relativity. As years passed, the romanticism for black holes, neutron stars dissapeared and what emerged out of my knowledge, is purely mathematical concepts, ideas and most importantly those abstract mathematical concepts slowly settled in my mind and took a form, a shape: Black holes, big bang or otherwise.....These again are purely mathematical concepts, later witnessed by Hubble space telescope to get evidence
For readers who are thinking that it is a very simple book, casual read, sitting on sofa or while traveling, surely this is NOT THE BOOK for you. This is a book which is written by one of the greatest scientist of our generation who has been given the honour with Einstein. Well, before understanding 'A Brief History of Time' we should understand who is writing the book. He is Dr.Hawking, the Lucasian Prof.of Mathematics, the position awarded to Sir Isaac Newton,Jospeh Larmor, George Stokes, Paul Dirac. Since 1663-2009, only 18 professors were awarded this position, one of the highest award in the world of mathematics. So, we understand what level of mathematics he would be assuming us to know.
Why the book is popular? When Hawking went to Simon Mitton, the editor in charge of of astronomy books ar Cambridge University Press, he asked to drop all the equations in his draft, except one, E=mc^2. Dr.Hawking's motto was to reach to buyers in airport, specifically to the mass, which definitely would have made it half if there would have been equations and that is the reason, why the book is so difficult. If you think that you can explain mathematics in simple English, then everybody would have been Dr.Hawking.
The first edition came up in 1988. In 1974, Carl Sagn recounts:"I realized that I was watching an ancient ceremony: the investiture of new fellows into the Royal Society, one of the most ancient scholarly organizations on the planet. In the front row, a young man in a wheelchair was, very slowly, signing his name in a book that bore on its earliest pages the signature of Isaac Newton....."
What this book is all about? 'A Brief History of Time' is an attempts to explain a range of subjects in cosmology, including the Big Bang, black holes and light cones, to the nonspecialist reader. The idea is is to give an overview of the subject but, unusual for a popular science book, it also attempts to explain some complex mathematics.
What is there in the book?
Our Picture of the Universe: A basic idea of the history and development of cosmology starting from Ptolemy's Universe, Copernicus, Galileo to the current understanding.
Space & Time: Things start to become a little bit weird from this chapter. (a) Galilean relativity and measurement (b) Newton's laws of motion (c) Emerging ideas of gravity (d) James Clerk Maxwell's emergence of the famous theory of electromagnetism -- The first step towards unification, unifying 2 separate forces, electric and magnet into one. (I would recommend to read Daniel Fleisch's 'A student's guide to Maxwell's equations'). Dr. Hawking then introduces, Einstein's Special Theory of Relativity, how Einstein used Maxwell's equations, the constancy for the speed of light, Lorentz transformation. (I would recomment readers to have a thorough understanding of Lorentz transformation, using Euclid's postulate of h^2=b^2+p^2 and what is a Lorentz factor). Hawking introduces the idea of light cones, where the event will travel. Actually, it is better first to read Minkowski's diagram of spacetime before going through this chapter. Then comes the famous Michelson-Morley experiment
 

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Time is butter Spreading's Theory.

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it's an amezing book...

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The book discusses the history of the theoretical physics, cosmology and a part of philosophy, and it discusses about the different theories that have risen in the past and the current adapted theories about the universe.
It discusses about relativity, string theory, anthropic principle, uncertainty and other useful phenomenon of physics.
It gives a brief review of many of the models of the universe proposed by the scientists so far.
The Big Bang, the different theories about the events following it, the Black Holes and other heavenly mysterious bodies, the boundary of the universe, the predictions of relativity and Quantum mechanics and the limitations of humans in understanding the universe---- all this has been described in a very reader-friendly manner with no long derivations or equations.
This book is basically written for the common people who want to know the basics of how the physics is progressing and exploring the secrets of the universe.
 

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A wonderful that changed my life . I have never read these kind of books. After reading this, i got excited and started to read his collections.

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this book can be consider as a modern upanishat.an ineradicable human curiosity works in such a way.the journey of stephen hawking resembles nachikethas in kadopanishath.he is a child with immense curiosity about our existence. an enlightened view towards the universe help us to erase all of our egos because of the fact that we get an idea about where we are in such a vast universe.after reading this book we smile towards all regional and religious calamities because we know that we are all coming from singularity.all the organisms in the earth are made up of dust,the sun dust.then we consider the sun as our only parent and religion.so this book erase all our foolishness as a candle erase darkeness in a room. 

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when i know about black holl in discovery i shocked and i i want more

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