دانلود کتاب A Brief History of Time

Amazon.com Review Stephen Hawking, one of the most brilliant theoretical physicists in history, wrote the modern classic *A Brief History of Time* to help nonscientists understand the questions being asked by scientists today: Where did the universe come from? How and why did it begin? Will it come to an end, and if so, how? Hawking attempts to reveal these questions (and where we're looking for answers) using a minimum of technical jargon. Among the topics gracefully covered are gravity, black holes, the Big Bang, the nature of time, and physicists' search for a grand unifying theory. This is *deep* science; these concepts are so vast (or so tiny) as to cause vertigo while reading, and one can't help but marvel at Hawking's ability to synthesize this difficult subject for people not used to thinking about things like alternate dimensions. The journey is certainly worth taking, for, as Hawking says, the reward of understanding the universe may be a glimpse of "the mind of God." *--Therese Littleton* Review “[Hawking] can explain the complexities of cosmological physics with an engaging combination of clarity and wit. . . . His is a brain of extraordinary power.”—*The New York Review of Books * “This book marries a child’s wonder to a genius’s intellect. We journey into Hawking’s universe while marvelling at his mind.”—*The Sunday Times *(London) “Masterful.”—*The Wall Street Journal * “Charming and lucid . . . [A book of] sunny brilliance.”—*The New Yorker* “Lively and provocative . . . Mr. Hawking clearly possesses a natural teacher’s gifts—easy, good-natured humor and an ability to illustrate highly complex propositions with analogies plucked from daily life.”—*The New York Times * “Even as he sits helpless in his wheelchair, his mind seems to soar ever more brilliantly across the vastness of space and time to unlock the secrets of the universe.”—*Time*