دانلود کتاب About Time: Einstein's Unfinished Revolution

Physics affects the way we live and, ultimately, how life itself functions. This new take on a classic text investigates key frontiers in modern physics. Exploring our universe, from the particles within atoms to the stars making up galaxies, it reveals the vital role invisible mechanisms play in the world around us, and explains new techniques, from nano-engineering and brain research to the latest advances in high-speed data networks and custom-built materials. Written by leading international experts, each of the nineteen chapters will fascinate scientists in all disciplines, as well as anyone wanting to know more about the world of physics. First Edition Hb (1989) 0-521-30420-2 First Edition Pb (1992) 0-521-43831-4 Examines the consequences of Einstein’s relativity theory, exploring the mystery of time and considering black holes, time travel, the existence of God, and the nature of the universe. Preface — Prologue — Very brief history of time — Whose time is it anyway? — Quest for eternity — Escape from time — Cyclic worlds and the eternal return — Newton’s time and the clockwork universe — Einstein’s time — Is the universe dying? — Return of the eternal return — Start of it all — It happens when it happens — Time for a change — Gift from heaven — Goodbye to the ether — Timely solution — Interlude — Stretching time — Puzzle of the twins — Goodbye to the present — Time is money — Timescape — Timewarps — Light barrier — Perpetual motion and the uphill struggle — Why time runs faster in space — Clock in the box — Best clock in the universe — Echo that arrived late — Going up in the world — Black holes: Gateways to the end of time — Warp factor infinity — Dark mystery — Penetrating the magic circle — Singular problem — Beyond the end of time — Are they really out there? — Beginning of time: When exactly was it? — Great clock in the sky — Big bang and what happened before it — Older than the universe? — Einstein’s greatest mistake — Two-timing the cosmos — Einstein’s greatest triumph? — Handwriting of God — Did the big bang ever happen? — What’s a few billion years among friends? — Repulsive problem — Loitering universe — Quantum time — Time to tunnel — Watched kettles — Erasing the past — Spooky signals and psychic particles — Faster than light? — Time vanishes! — Imaginary time — Two cultures revisited — How time got started — Hartle-Hawking theory — Imaginary clocks — Arrow of time — Catching the wave — Signals from the future — Matter of time reversal — Particle that can tell the time — Lopsided universe — Backwards in time — Into reverse — Thinking backwards — Antiworlds — Winding the clock back — Hawking’s greatest mistake — Time for everybody — Time travel: Fact or fantasy? — Signaling the past — Visiting the past — Black-hole time machines — Wormholes and strings — Paradox — But what time is it now? — Can time really flow? — Myth of passage — Does the arrow of time fly? — Why now? — Experimenting with time — How long does the present last? — Now you see it, now you don’t — Filling in time — Subjective time — Back door to our minds — Unfinished revolution — Epilogue — Notes — Bibliography — Index