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丕賱爻賮乇 毓亘乇 丕賱夭賲賳 賮賷 賰賵賳 兀賷賳卮鬲丕賷賳
丕賱爻賮乇 毓亘乇 丕賱夭賲丕賳 廿賱賶 丕賱賲爻鬲賯亘賱 賱賷爻 賮賯胤 賮賶 丨賷夭 丕賱廿賲賰丕賳 賵賱賰賳賴 賵賯毓 亘丕賱賮毓賱貙 賮胤亘賯賸丕 賱賰鬲丕亘 噩. 乇賷鬲卮丕乇丿 噩賵鬲貙 氐睾乇 賲賱丕丨賵 丕賱賮囟丕亍 賯賱賷賱丕賸 賮賶 丕賱毓賲乇 毓賳 兀賵賱卅賰 丕賱匕賷賳 亘賯賷鬲 兀賯丿丕賲賴賲 乇丕爻賷丞 毓賱賶 爻胤丨 丕賱兀乇囟. 賵賱賰賳 .... 賴賱 賷賲賰賳 賷丕 鬲乇賶 丕賱爻賮乇 廿賱賶 丕賱賲丕囟賶 賮賶 馗賱 馗乇賵賮 賮賷夭賷丕卅賷丞 賲賵丕鬲賷丞責 賷乇卮丿 噩. 乇賷鬲卮丕乇丿 噩賵鬲 賯丕乇卅賴 毓亘乇 噩賵賱丞 卮丕卅賯丞貙 廿賱賶 丕賱兀爻丕賱賷亘 賵丕賱賵爻丕卅賱 丕賱賲賲賰賳丞 賱賱爻賮乇 毓亘乇 丕賱夭賲賳貙 賵賴賵 賰匕賱賰 賷鬲賳亘兀 亘丨賯亘丞 丕賱亘賯丕亍 丕賱賲爻鬲賯亘賱賶 賱噩賳爻 丕賱亘卮乇貙 鬲兀爻賷爻賸丕 毓賱賶 鬲賯賳賷丞 毓賱賲賷丞 丨丿賷孬丞.
329 pages, Paperback
First published January 1, 2001
369 people are currently reading
2,948 people want to read
About the author
J. Richard Gott III
8听books54听followersJohn Richard Gott III is a professor of astrophysical sciences at Princeton University. He is known for developing and advocating two cosmological theories with the flavour of science fiction: Time travel and the Doomsday argument.
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Displaying 1 - 30 of 107 reviews
January 6, 2008
I read this book and I need to re-read it again. This is one of those books that after you read it the first time, you are completely enlightened. You know you probably missed some important details so when you read it a second time, everything you missed pops out at you. For anybody really wanting to understand the different theories behind time travel, this book is for you. There were times when I just sat and pondered about what I just read for about an hour.
February 3, 2019
We instinctively know what time travel is, but how would you define it in physical terms? How is time travel to the past different from time travel to the future? And does it fit in our universe? If not, how can we know about the future?
Author tries to answer these questions in a graphic way, and he succeeds! The book also takes a suprising turn towards the end, making it an extra satisfying read.
Author tries to answer these questions in a graphic way, and he succeeds! The book also takes a suprising turn towards the end, making it an extra satisfying read.
February 24, 2025
Fun book that tries to minimize the actual physics of time travel and provide explanations more at a conceptual level.
Time travel to the future is well established theoretically and author provides an accessible illustration of the concept.
Time travel to the past is contested - author describes some mechanisms by which it could work, namely traveling in circular paths around cosmic strings, wormholes and warpdrives.
Cosmic strings are apparently like the superstrings of string theory, except they have have a very small thickness (unlike the superstrings of zero thickness).
Yes, just nod your head along - there are probably only like 7 people in the world who understand string theory.
Wormholes and warpdrives are those tunnels through spacetime. So, instead of traveling through the "curvature of spacetime" - you take a shortcut. So, instead of going around the mountain you tunnel through it.
This concept makes a little more intuitive sense than multidimensional "strings" (whether cosmic or superstrings) but apparently requires some negative mass stuff whose existence is still not proven while cosmic strings require only positive mass stuff. (Not that cosmic or superstrings are proven either).
Also, while one can see intuitively how wormholes it would result in faster than light travel, the explantation of time traveling through it means moving them wormholes around which was a little less intuitive.
Then there is one of the foundational question of physics - what was there before the universe? Here, the author ties time travel to the origin of universe.
Apparently, the universe is its own mother curving back in time to form itself. Every event has a preceding event and there is no earliest event.
There's also a final digression onto the topic of predicting the period of existence of literally anything in the universe.
Not sure how it relates to time travel but the author calls it the "The 95 Percent Copernican Argument" and states that everything will exist for 1/39th to 39 times its existing life.
So humans, currently existing for around 200,000 years will exist for another 5100 to 7.8M years and thereby we should start colonizing Mars ASAP (though with 5100 years, I think we can chill for a bit).
Overall, the book was fun trying to bend (just like spacetime, eh?) my imagination to visualize how exactly it would work and coming short over and over again.
Time travel to the future is well established theoretically and author provides an accessible illustration of the concept.
Time travel to the past is contested - author describes some mechanisms by which it could work, namely traveling in circular paths around cosmic strings, wormholes and warpdrives.
Cosmic strings are apparently like the superstrings of string theory, except they have have a very small thickness (unlike the superstrings of zero thickness).
Yes, just nod your head along - there are probably only like 7 people in the world who understand string theory.
Wormholes and warpdrives are those tunnels through spacetime. So, instead of traveling through the "curvature of spacetime" - you take a shortcut. So, instead of going around the mountain you tunnel through it.
This concept makes a little more intuitive sense than multidimensional "strings" (whether cosmic or superstrings) but apparently requires some negative mass stuff whose existence is still not proven while cosmic strings require only positive mass stuff. (Not that cosmic or superstrings are proven either).
Also, while one can see intuitively how wormholes it would result in faster than light travel, the explantation of time traveling through it means moving them wormholes around which was a little less intuitive.
Then there is one of the foundational question of physics - what was there before the universe? Here, the author ties time travel to the origin of universe.
Apparently, the universe is its own mother curving back in time to form itself. Every event has a preceding event and there is no earliest event.
There's also a final digression onto the topic of predicting the period of existence of literally anything in the universe.
Not sure how it relates to time travel but the author calls it the "The 95 Percent Copernican Argument" and states that everything will exist for 1/39th to 39 times its existing life.
So humans, currently existing for around 200,000 years will exist for another 5100 to 7.8M years and thereby we should start colonizing Mars ASAP (though with 5100 years, I think we can chill for a bit).
Overall, the book was fun trying to bend (just like spacetime, eh?) my imagination to visualize how exactly it would work and coming short over and over again.
September 26, 2013
No book is without its charm although this one comes pretty close. Granted, diehard and gullible enthusiasts of space travel no doubt think differently but for the more skeptical they will find little worthwhile here except a gift for explaining the theory of relativity--both special and general relativity--with clarity and simplicity that few can and thus the latter part of the fourth chapter makes the book worthy of the purchase. For those seeking a book that will advocate the resumption of space travel to secure the longevity of the human race as this one does in the last chapter it can be imagined that more thoughtful explanations of the benefits of such exploration are to be found. Likewise, those who want to believe that time travel has any realistic basis will be sorely disappointed. Instead, one will find competitive Gott, cape crusader with his friend Li Xin Li (the former you can, to use an epithet, call batman and the latter Robin) writing a book to lay claim of some very speculative theories. There is one in which Gott, so eager to be the next Newton of time travel, deals with orbiting two cosmic strings that will lead one to the past--Gott himself wants full acclaim as the inventor of this idea. The other, his magnum opus which he shares with his counterpart Robin is figuring out the fact that there will be no explosion if one quickly accelerates in and out of the doors of Misner space, and thus one is now free to leap into time with this. Well I am busy today but I will definitely do it tomorrow. Oh yes, the cape crusaders shook hands with each other in their zeal at finding this an achievable goal. You can learn about their flourishing relationship in the content of this book. Yes the book does explore half a dozen other ways to go into the future and past such as the plausibility of engineering wormholes but frankly it is not worth ones time. The reality is that talk of time travel is an absurdity for a world that has done little that is remarkable beyond flight travel to the moon. We are in the stone ages and yet astrophysists are making mathematical formulas of scenarios that will be implausible even hundreds of years into the future at best and seeking acclaim for it. It has little sense.
February 19, 2008
I enjoyed this book about the physics of time travel, although at times I felt like the author was dealing with some pretty speculative stuff and presenting it pretty confidently as fact.
For instance, he describes a method of creating a "time machine" that would, in theory, allow a spaceship to reach a destination faster than light. To set up the process, you position two cosmic strings of infinite length near each other. Oh, is that all I need? Two cosmic strings of infinite length. Let me check in the basement for those. Meanwhile, I will continue with my money making plan of finding a magical goblin that craps Faberg茅 eggs.
In another section of the book, there is a lengthy discussion about predicting the duration of things (like lives, or civilizations, or planets) based on probability and the idea that we're not at some "special" point in time (like the Copernican view that Earth doesn't occupy a "special" place in the cosmos). This method allows the author to predict that, for example, the United States is likely to exist for a duration of somewhere between 5.7 years and 8736 years.
The ultimate point of describing this method of predicting the future is to exhort people to invest resources into the space program, with the goal in mind of colonizing space, in order to increase the likelihood of the survival of humanity. This point I tend to agree with, although the "Copernican" method of predicting the future seems kinda sketchy.
Generally, there is some good material here, particularly in the chapters related to how physics has evolved throughout history, and how our view of time has changed as a result.
For instance, he describes a method of creating a "time machine" that would, in theory, allow a spaceship to reach a destination faster than light. To set up the process, you position two cosmic strings of infinite length near each other. Oh, is that all I need? Two cosmic strings of infinite length. Let me check in the basement for those. Meanwhile, I will continue with my money making plan of finding a magical goblin that craps Faberg茅 eggs.
In another section of the book, there is a lengthy discussion about predicting the duration of things (like lives, or civilizations, or planets) based on probability and the idea that we're not at some "special" point in time (like the Copernican view that Earth doesn't occupy a "special" place in the cosmos). This method allows the author to predict that, for example, the United States is likely to exist for a duration of somewhere between 5.7 years and 8736 years.
The ultimate point of describing this method of predicting the future is to exhort people to invest resources into the space program, with the goal in mind of colonizing space, in order to increase the likelihood of the survival of humanity. This point I tend to agree with, although the "Copernican" method of predicting the future seems kinda sketchy.
Generally, there is some good material here, particularly in the chapters related to how physics has evolved throughout history, and how our view of time has changed as a result.
October 10, 2023
Relatively accessible to read, but could have done with shorter chapters and more diagrams.
December 13, 2018
Great book. Perfect starter book to anyone interested in time travel. It posits many of the theories and paradoxes of time travel while being quite informative. The book may be tough for some readers if not of a science background, but it has excellent metaphors that help the reader along.
July 30, 2016
traveling through time is just a technological problem .... after reading this book you will realize that there are way more methods to travel through time than you have ever thought ...
January 13, 2016
乇賷賮賷賵 胤賵賷賱 ..
丿毓賳賷 兀禺亘乇賰 亘爻乇貙兀賳丕 賵 兀賳鬲 賵 丕賱噩賲賷毓 賲爻丕賮乇賵賳 毓亘乇 丕賱夭賲賳 貙賰賷賮 賴匕丕 責 爻兀禺亘乇賰 賱丕丨賯丕 賵 賱賰賳 丕賱兀賳 爻賵賮 兀卮丕乇賰賰 亘毓囟 丕賱兀賮賰丕乇 丕賱賲鬲賮乇賯丞 毓賳 賲賵囟毓賳丕 賴匕丕 .
丿毓賳賷 兀鬲丨丿孬 毓賳 丕賱夭賲賳 賯賱賷賱丕 貙 賲賮賴賵賲 丕賱亘毓丿 丕賱乇丕亘毓 丕賷 丕賱夭賲賳 馗賴乇 賱丕賵賱 賲乇丞 賮賷 乇賵丕賷丞 丌賱賴 丕賱夭賲賳 毓丕賲 1895 毓賱賷 賷丿 賴乇亘乇鬲 噩賵乇噩 賵賷賱夭 貙 丕賷 丕賳賴 馗賴乇 兀丿亘賷丕 兀賵賱丕 孬賲 鬲賳亘賳鬲賴 丕賱賮賷夭賷丕亍 貙 兀賱賷爻 匕賱賰 賲卮賵賯丕 責. 丨爻賳丕 丿毓賳賷 兀賳亘賴賰 兀賳 賴賳丕賰 賮乇賯丕 噩賵賴乇賷丕 亘賷賳 丕賱亘毓丿 丕賱夭賲丕賳賷 賵 丕賱丕亘毓丕丿 丕賱賲賰丕賳賷丞 丕賱孬賱丕孬丞 貙 賮丕賱亘毓丿 丕賱夭賲丕賳賷 賱賴 廿卮丕乇丞 爻丕賱亘丞 .
毓賱賲 丕賱賮賷夭賷丕亍 丨丕賱賷丕 賷毓鬲乇賮 亘兀乇亘毓 兀亘毓丕丿 賲丨爻賵爻丞 賰賲丕 爻亘賯 匕賰乇賴 賵 賱賰賳 賴賳丕賰 賲賳 賷毓鬲賯丿 亘兀賳 賴賳丕賰 亘毓丿賷賳 夭賲丕賳賷賳 賱丕 亘毓丿 賵丕丨丿 貙 賵 兀賳丕 賲賳 賲丐賷丿賷 鬲賱賰 丕賱賮賰乇丞 貙 賮丕賱丕亘賵乇賷噩賳賷賳 脳爻賰丕賳 丕爻鬲乇丕賱賷丕 丕賱丕氐賱賷賵賳 丕毓鬲賯丿賵丕 亘賵噩賵丿 亘毓丿 夭賲丕賳賷 兀禺乇 賵 賴賵 脳亘毓丿 丕賱丨賱賲脳 貙 賳賴丕賷賰 毓賷 丕賳賴 賲賳 丕賱賲賲賰賳 兀賳 賳賰鬲卮賮 賲爻鬲賯亘賷賱丕 丕亘毓丕丿 兀禺乇賷 乇亘賲丕 鬲賰賵賳 睾賷乇 賲丨爻賵爻丞 .
鬲禺賷賱 賲毓賷 毓丕賱賲丕 兀丨丕丿賷 丕賱丕亘毓丕丿 兀賵 孬賳丕卅賷 丕賱丕亘毓丕丿 責 爻丕鬲乇賰 卮乇丨 賴匕賴 丕賱賳賯胤丞 賱賱賰鬲丕亘 賮賴賷 賲匕賰賵乇丞 賮賷賴 亘兀爻鬲賮丕囟丞 .
兀賮賰乇鬲 賮賷 爻亘亘 賵噩賵丿 4 兀亘毓丕丿 責 乇亘賲丕 賷賰賵賳 丕賱爻乇 賵乇丕亍 賵噩賵丿賴丕 賴賵 丕賱噩丕匕亘賷丞 脳丕爻鬲賳丕丿丕 毓賱賷 兀賮賰丕乇 丕賷賳卮鬲丕賷賳脳
鬲亘毓丕 賱賳馗乇賷丞 丕賱賳爻亘賷丞 丕賱禺丕氐丞 賱丕 賷賲賰賳 丕賱爻賮乇 毓亘乇 丕賱夭賲賰丕賳 賱賱賲丕囟賷 賱丕賳 匕賱賰 賷賳丕賮賷 丨賯賷賯丞 兀賳 爻乇毓丞 丕賱囟賵亍 賴賷 丕賱爻乇毓丞 丕賱賵丨賷丿丞 丕賱賲胤賱賯丞 賮賷 丕賱賰賵賳 .
兀爻賲毓鬲 賷賵賲丕 毓賳 賲亘丿兀 毓丿賲 丕賱賷賯賷賳 責 丕賱賮賷夭賷丕亍 丕賱賰賲賷丞責 丕賱賮賵鬲賵賳 責 丕賱孬賯亘 丕賱丿賵丿賷 責 丕賱孬賯亘 丕賱丕爻賵丿責 賳馗乇賷丞 賲丕賰爻賵賷賱 責 賳馗乇賷丞 丕賱丕賵鬲丕乇 丕賱賮丕卅賯丞 責
丕賱毓噩賷亘 兀賳 賳馗乇賷丞 丕賱丕賵鬲丕乇 丕賱賮丕卅賯丞 脳亘丿賵賳 丕賱鬲胤乇賯 賱賴丕脳鬲賯鬲乇丨 賵噩賵丿 11 亘毓丿丕 , 賵丕丨丿 夭賲丕賳賷 貙 3 丕亘毓丕丿 賲賰丕賳賷丞 貙 7 丕亘毓丕丿 賲賱鬲賵賷丞 .
兀爻賲毓鬲 毓賳 賲爻乇毓丕鬲 丕賱噩爻賷賲丕鬲 責 噩爻賷賲丕鬲 丕賱賲賷賵賳 責 噩爻賷賲丕鬲 丕賱賰賵丕乇賰 責 丕賱賲丕丿丞 丕賱賲囟丕丿丞 責
鬲鬲爻兀賱 賱賲丕 兀胤乇丨 賰賱 賴匕賴 丕賱丕爻卅賱丞 貙 丕胤乇丨賴丕 賱丕賳賴丕 賴賷 丕賱亘賳賷丞 丕賱乇卅賷爻賷丞 丕賱鬲賷 賷鬲乇鬲亘 毓賱賷賴丕 賳卮賵亍 賲賮賴賵賲 丕賱爻賮乇 毓亘乇 丕賱夭賲賳 .
賳乇噩毓 賱丨丿賷孬賳丕 毓賳 兀賳賳丕 噩賲賷毓丕 賲爻丕賮乇賵賳 毓亘乇 丕賱夭賲賳 貙 賳毓賲 賳賱賰 丨賯賷賯丞 賮賳丨賳 賳爻丕賮乇 毓亘乇 丕賱夭賲賳 亘爻乇毓丞 孬丕賳賷丞 亘孬丕賳賷丞 兀賷 亘卮賰賱 胤亘賷毓賷 貙 賵 賱賰賳賳丕 丕賷囟丕 賳爻鬲胤賷毓 丕賱爻賮乇 亘卮賰賱 睾賷乇 胤亘賷毓賷 丿毓賳賷 兀賵囟丨 匕賱賰
鬲亘毓丕 賱丕賷賳卮鬲丕賷賳 :丕賱夭賲賳 賷鬲亘兀胤賷 亘丕賱賳爻亘丞 賱賱丕噩爻丕賲 丕賱賲鬲丨乇賰丞 , 丕賷 兀賳賴 賰賱賲丕 夭丕丿鬲 爻乇毓丞 丕賱噩爻賲 賷夭丿丕丿 鬲亘兀胤賷 丕賱夭賲賳 賮賷氐亘丨 匕賱賰 賳賵毓 賲賳 丕賱爻賮乇 毓亘乇賴 賱賱賲爻鬲賯亘賱
亘毓囟賴賲 兀毓鬲乇囟 賯丕卅賱丕 貙 賱丕 賳爻鬲胤賷毓 兀賳 賳賯乇亘 噩爻賲丕 賲賳 爻乇毓丞 丕賱囟賵亍 貙 丕賱賲 賷爻賲毓 丕賱賯丕卅賱 毓賳 賲爻乇毓丕鬲 丕賱噩爻賷賲丕鬲 丕賱毓馗賲賷 賮賮賷 賲毓賴丿 賮賷乇賲賷 鬲賲 鬲爻乇賷毓 丕賱亘乇賵鬲賵賳丕鬲 丕賱賷 99,999946 賮賷 丕賱賲丕卅丞 賲賳 爻乇毓丞 丕賱囟賵亍 貙 丕賷 兀賳賴丕 丨賷夭 丕賱丕賲賰丕賳 賵賱賰賳 賷賰賲賳 丕賱毓賷亘 賮賷 廿賲賰丕賳賷鬲賳丕 賮賷 鬲胤亘賷賯 賴匕賴 丕賱毓賲賱賷丞 毓賱賷 賰鬲賱丞 賰亘賷乇丞 賳爻亘賷丕 賰賰鬲賱丞 丕賱丕賳爻丕賳 , 賱賲 丕賯賳毓賰 責 丨爻賳丕 賵 廿賳 丕禺亘乇鬲賰 兀賳 丕丨丿賴賲 亘丕賱賮毓賱 爻丕賮乇 毓亘乇 丕賱夭賲賳 賱賱賲爻鬲賯亘賱 責 乇丕卅丿 丕賱賮囟丕亍 丕賱乇賵爻賷 爻賷乇噩賷 丕賳丿賷賷賮 賯氐賷 748 賷賵賲丕 賮賷 丕賱賮囟丕亍 賵 鬲噩丕賵夭鬲 爻乇毓鬲賴 17000 賲賷賱 賮賷 丕賱爻丕毓丞 丕賷 丕賳 鬲賱賰 丕賱爻乇毓丞 鬲爻丕賵賷 0,00254 賲賳 爻乇毓丞 丕賱囟賵亍 賵 賱賰賳 亘賱睾 毓賳賴丕 兀賳 毓賲乇賴 鬲賳丕賯氐 亘賲賯丿丕乇 1 毓賱賷 50 毓賳 丕賱毓賲乇 丕賱匕賷 賰丕賳 爻賷亘賱睾賴 毓賱賷 丕賱丕乇囟 貙 乇睾賲 賰賵賳賴丕 囟卅賷賱丞 噩丿丕 丕賱丕 丕賳賴丕 丨賯賷賯丞 鬲孬亘鬲 廿賲賰丕賳賷丞 丕賱爻賮乇 .
丨爻賳丕 鬲毓丕賱賷 賲毓賷 賳賮賰乇 賮賷 丕賱爻賮乇 毓亘乇 丕賱夭賲賳 賱賱賲丕囟賷 賵 賱賰賳 賮賰乇 賮賷賴 賰兀賳賰 鬲卮丕賴丿 丕賱賲丕囟賷 賱丕 鬲夭賵乇賴 貙 丕鬲毓賱锟斤拷 丕賳賰 廿匕丕 乇丕賯亘鬲 賳噩賲 兀賱賮丕 賯賳胤乇賵爻 賮兀賳賰 賲丕 鬲卮丕賴丿賴 賴賵 賲丕囟賷賴 賵 賱賷爻 丨丕囟乇賴 賮賴賵 賷亘毓丿 毓賳丕 4 爻賳賵丕鬲 囟賵卅賷丞 貙 賵 賲噩乇丞 兀賳丿乇賵賲賷丿丕 鬲亘毓丿 毓賳丕 賲賷賱賵賳賷 爻賳丞 囟賵卅賷丞 丕賷 丕賳 賲丕 鬲乇丕賴 毓賳丿賲丕 鬲乇丕賯亘賴丕 賴賵 賲丕囟賷賴丕 賲賳匕 賲賱賷賵賳賷 毓丕賲 貙 亘亘爻丕胤丞 丕賷 兀賳 丕賱鬲賱賷爻賰賵亘 兀丿丕丞 夭賲賳 .
丕鬲乇賷丿 兀賳 鬲乇賷 賳賮爻賰 賮賷 丕賱賲丕囟賷 責 亘爻賷胤丞 賯賮 毓賱賷 亘毓丿 禺賲爻丞 兀賯丿丕賲 賲賳 丕賱賲乇丌賴 貙 丕賱氐賵乇丞 丕賱鬲爻 鬲乇丕賴丕 賱賷爻鬲 氐賵乇鬲賰 丕賱丨丕賱賷丕 亘賱 賴賷 氐賵乇丞 賲賳 賲丕囟賷賰 賱兀賰賵賳 兀賰孬乇 丿賯丞 賴賷 氐賵乇鬲賰 賲賳匕 10 賳丕賳賵 孬丕賳賷丞
兀賲丕 夭賷丕乇丞 丕賱賲丕囟賷 賮賴賵 兀賰孬乇 鬲毓賯賷丿丕 賮鬲亘毓丕 賱賱賳爻亘賷丞 丕賱禺丕氐丞 賴賵 賲爻鬲丨賷賱 賵 賱賰賳 馗賴乇鬲 毓丿丞 賳馗乇賷丕鬲 兀禺乇賷 鬲爻賲丨 亘丨丿賵孬賴丕 貙 賰胤亘賷毓丞 丕賱夭賲賰丕賳 丕賱賲賳丨賳賷丞 貙 鬲賯賵爻 丕賱賰賵賳 貙 丕賱丕賵鬲丕乇 丕賱賰賵賳賷丞 賵 睾賷乇賴丕 賰孬賷乇 ..
丿毓賳丕 賱丕 賳賳爻賷 兀賳 丕賱賰孬賷乇 賲賲丕 賳丨賳 賮賷賴 丕賱兀賳 賰丕賳 賮賷 丕賱亘丿亍 賲爻鬲丨賷賱丕.
丕賱賰鬲丕亘 賲賳 兀乇賵毓 賲丕 賯乇兀鬲 賮賷 賲賵囟賵毓賴 , 賱丿乇噩丞 兀賳賴 丕賱賰鬲丕亘 丕賱賵丨賷丿 丕賱匕賷 賯乇兀鬲賴 賲乇鬲賷賳
爻鬲噩丿 賮丕卅丿丞 賱丕 賲孬賷賱 賱賴丕 賮賷賴 .
兀賳氐丨 亘賴 賵 亘卮丿丞
July 2, 2021
賮賷 賰賵賳 兀賷賳卮鬲丕賷賳 丕氐亘丨 丕賱爻賮乇 毓亘乇 丕賱夭賲賳 丕賱賶 丕賱賲爻鬲賯亘賱 賮毓賱丕賸 賮賷 毓丿丕丿 丕賱賲鬲丕丨 .賱賯丿 賵囟丨 毓賲賱 丕賷賳卮鬲丕賷賳 丕賳 丕賱夭賲丕賳 賷賲賰賳 賲毓丕賱噩鬲賴 乇賷丕囟賷賸丕 賰亘毓丿 乇丕亘毓 . 賵亘丕賱賲賯丕乇賳丞 丕賳 爻胤丨 丕賱丕乇囟 孬賳丕卅賷 丕賱丕亘毓丕丿. 丕賲丕 丕賱賰賵賳 賮廿賳賴 乇亘丕毓賷 丕賱丕亘毓丕丿 .
丕賱爻賮乇 毓亘乇 丕賱夭賲賳 丕賱賶 丕賱賲爻鬲賯亘賱貙 亘丕賱丕賲賰丕賳 夭賷丕乇丞 丕賱丕乇囟 亘毓丿 兀賱賮 毓丕賲 賲賳 丕賱丕賳 貙 賱賯丿 亘賷賳 丌賷賳卮鬲丕賷賳 賰賷賮賷丞 賮毓賱 匕賱賰 貙 丕賳 賷爻鬲賯賱 爻賮賷賳丞 賮囟丕亍 賵鬲賷賲賲 卮胤乇 賳噩賲 賷亘毓丿 丕賯賱 賯賱賷賱賸丕 賲賳 佶贍贍 爻賳丞 囟賵卅賷丞 賵丕賱毓賵丿丞 賲賳賴丕 賯丕胤毓賸丕 乇丨賱鬲賷 丕賱匕賴丕亘 賵丕賱毓賵丿丞 亘爻乇毓丞 侃侃貙侃侃佶 侏販賲賳 爻乇毓丞 丕賱囟賵亍 貙 賵毓賳丿 丕賱毓賵丿丞 賱賱丕乇囟 孬丕賳賷丞賸 爻賷賰賵賳 賯丿 丕賳賯囟賶 賲賳 毓賲乇賴丕 兀賱賮 爻賳丞 貙 亘賷賳賲丕 賱賳 賷夭賷丿 毓賲乇 丕賱賲爻丕賮乇 丕賱丕 亘賲賯丿丕乇 毓卮乇 爻賳賵丕鬲 . 賮賷 丕賱賲賯丿賵乇 鬲爻乇賷毓 丕賱亘乇賵鬲賵賳丕鬲 賱鬲氐賱 爻乇毓鬲賴丕 丕賱賶 侃侃.侃侃佶侏販 賲賳 爻乇毓丞 丕賱囟賵亍 . 丕賳 丕賱賲卮賰賱丞 賱丕 鬲毓丿賵 丕賳 鬲賰賵賳 賲爻兀賱丞 鬲賰賱賮丞 貙 賮丕賱亘乇賵鬲賵賳丕鬲 賱丕 鬲夭賳 賰孬賷乇丕賸 賵賲賳 孬賲 賮廿賳 鬲毓噩賷賱賴丕 丕賱賶 爻乇毓丕鬲 毓丕賱賷丞 睾賷乇 亘丕賴馗 丕賱鬲賰丕賱賷賮. 睾賷乇 丕賳 丕賱賰丕卅賳 丕賱亘卮乇賷 賷夭賳 賯丿乇 賵夭賳 丕賱亘乇賵鬲賵賳 亘賳丨賵 伽贍 兀賰鬲賱賷賵賳 賲乇丞 賵毓賱賶 匕賱賰 賮爻賷賰賵賳 鬲毓噩賷賱 噩爻賲賴 亘賲毓賷丕乇 丕賱胤丕賯丞 丕賰孬乇 賰賱賮丞 亘賲丕 賱丕 賷賯丕爻 .
丕賱爻賮乇 毓亘乇 丕賱夭賲丕賳 丕賱賶 丕賱賲丕囟賷 貙 丕匕丕 乇丕賯亘賳丕 兀賱賮丕 賯賳胤賵乇爻 賵丕賱匕賷 賷亘毓丿 毓賳丕 亘兀乇亘毓 爻賳賷賳 囟賵卅賷丞 貙 賮廿賳賳丕 賱丕 賳卮丕賴丿賴 賰賲丕 賷亘丿賵 丕賱賷賵賲 貙 賵廿賳賲丕 賰賲丕 賰丕賳 賷亘丿賵 賲賳匕 丕乇亘毓丞 丕毓賵丕賳 禺賱鬲 貙 賵賳乇賶 賳噩賲 丕賱卮毓乇賷 丕賱賷賲丕賳賷丞 毓賱賶 賲爻丕賮丞 侃爻賳賵丕鬲 囟賵卅賷丞 賲賳丕 賰賲丕 賰丕賳 賷鬲兀賱賯 賲賳匕 鬲爻毓 爻賳賵丕鬲 貙 賵丕匕丕 鬲胤賱毓鬲 丕賱賶 賲噩乇丞 丕賳丿乇賵賲賷丿丕 賵丕賱鬲賷 賷賮氐賱賳丕 毓賳賴丕 賲賱賷賵賳丕 爻賳丞 囟賵卅賷丞 貙 賮廿賳賰 鬲乇丕賴丕 賰賲丕 賱丕丨鬲 賲賳匕 賲賱賷賵賳賷 毓丕賲 貙 賮賷 匕賱賰 丕賱賵賯鬲 丨賷賳賲丕 賰丕賳 兀爻賱丕賮賳丕 丕賱丕賵丕卅賱 賲賳 爻賱丕賱丞 丕賱丕賳爻丕賳 丕賱賲丕賴乇 賮賷 丕賱丕毓賲丕賱 丕賱賷丿賵賷丞 "賴賵賲賵賴亘賱賷爻 "賷丿亘賵賳 毓賱賶 丕賱丕乇囟 . 賵賴賰匕丕 賰賱賲丕 乇賳賵賳丕 丕賱賶 賲爻丕賮丕鬲 丕亘毓丿 賰賱賲丕 兀賵睾賱賳丕 賮賷 丕賱鬲胤賱毓 丕賱賶 丕賱賲丕囟賷 . 丕賳 丕賱禺賱賮賷丞 丕賱丕卮毓丕毓賷丞 賱賱賲賵噩丕鬲 丕賱賰賵賳賷丞 賲鬲賳丕賴賷丞 丕賱氐睾乇 賵丕賱鬲賷 鬲鬲賰賵賳 賲賳 賲賵噩丕鬲 賲鬲賳丕賴賷丞 丕賱氐睾乇 賲賳 丕賱賮賵鬲賵賳丕鬲 鬲賳賴賲乇 毓賱賶 丕賱丕乇囟 賲賳 賰賱 丕乇噩丕亍 丕賱爻賲丕亍 貙 賵賴賷 丕賱鬲賷 鬲禺賱賮鬲 賲賳 賲乇丨賱丞 胤賮賵賱丞 丕賱賰賵賳 丨賷賳賲丕 賰丕賳 賮賷 丿乇噩丞 丨乇丕乇丞 毓丕賱賷丞 貙 賵鬲兀鬲賷 賴匕賴 丕賱賮賵鬲賵賳丕鬲 丕賱賷賳丕 賲亘丕卮乇丞 賲賳 賳丨賵 佟伲 亘賱賷賵賳 爻賳賰 賲囟鬲 貙 毓賳丿賲丕 賰丕賳 毓賲乇 丕賱賰賵賳 丕賱賵賱賷丿 .
賲賳 丕賱氐毓賵亘丞 丕賱鬲氐丿賷賯 亘禺乇賵噩 丕賱賰賵賳 賲賳 丕賱毓丿賲 亘賲毓賳丕賴 丕賱丨乇賮賷 . 賰賷賮 賷賲賰賳 亘賲賯丿賵乇 丕賱毓丿賲 丕賳 賷毓乇賮 毓賳 賯賵丕賳賷賳 丕賱賮賷夭賷丕亍 貙 丨賯賷賯丞 乇亘賲丕 丕毓鬲亘乇鬲 賲丨丕賵賱丞 噩毓賱 丕賱賰賵賳 賷兀鬲賷 賲賳 賱丕 卮賷亍 賲丨丕賵賱丞 卮丕匕丞 貙 賱兀賳 丕賱毓丿賲 賴賵 丕賱卮賷亍 丕賱匕賷 賷亘丿賵 亘丨賰賲 丕賱鬲毓乇賷賮 睾賷乇 賲賵噩賵丿 貙 賵乇亘賲丕 賰丕賳 丕賱爻丐丕賱 毓賳 賰賷賮賷丞 禺賱賯 丕賱賰賵賳 賲賳 丕賱毓丿賲 爻丐丕賱賸丕 禺丕胤卅賸丕 貙 乇亘賲丕 賱賲 鬲賰賳 鬲賱賰 賴賷 丕賱賰賷賮賷丞 丕賱鬲賷 馗賴乇 亘賴丕 丕賱賰賵賳 .
丕賱爻賮乇 毓亘乇 丕賱夭賲賳 丕賱賶 丕賱賲爻鬲賯亘賱貙 亘丕賱丕賲賰丕賳 夭賷丕乇丞 丕賱丕乇囟 亘毓丿 兀賱賮 毓丕賲 賲賳 丕賱丕賳 貙 賱賯丿 亘賷賳 丌賷賳卮鬲丕賷賳 賰賷賮賷丞 賮毓賱 匕賱賰 貙 丕賳 賷爻鬲賯賱 爻賮賷賳丞 賮囟丕亍 賵鬲賷賲賲 卮胤乇 賳噩賲 賷亘毓丿 丕賯賱 賯賱賷賱賸丕 賲賳 佶贍贍 爻賳丞 囟賵卅賷丞 賵丕賱毓賵丿丞 賲賳賴丕 賯丕胤毓賸丕 乇丨賱鬲賷 丕賱匕賴丕亘 賵丕賱毓賵丿丞 亘爻乇毓丞 侃侃貙侃侃佶 侏販賲賳 爻乇毓丞 丕賱囟賵亍 貙 賵毓賳丿 丕賱毓賵丿丞 賱賱丕乇囟 孬丕賳賷丞賸 爻賷賰賵賳 賯丿 丕賳賯囟賶 賲賳 毓賲乇賴丕 兀賱賮 爻賳丞 貙 亘賷賳賲丕 賱賳 賷夭賷丿 毓賲乇 丕賱賲爻丕賮乇 丕賱丕 亘賲賯丿丕乇 毓卮乇 爻賳賵丕鬲 . 賮賷 丕賱賲賯丿賵乇 鬲爻乇賷毓 丕賱亘乇賵鬲賵賳丕鬲 賱鬲氐賱 爻乇毓鬲賴丕 丕賱賶 侃侃.侃侃佶侏販 賲賳 爻乇毓丞 丕賱囟賵亍 . 丕賳 丕賱賲卮賰賱丞 賱丕 鬲毓丿賵 丕賳 鬲賰賵賳 賲爻兀賱丞 鬲賰賱賮丞 貙 賮丕賱亘乇賵鬲賵賳丕鬲 賱丕 鬲夭賳 賰孬賷乇丕賸 賵賲賳 孬賲 賮廿賳 鬲毓噩賷賱賴丕 丕賱賶 爻乇毓丕鬲 毓丕賱賷丞 睾賷乇 亘丕賴馗 丕賱鬲賰丕賱賷賮. 睾賷乇 丕賳 丕賱賰丕卅賳 丕賱亘卮乇賷 賷夭賳 賯丿乇 賵夭賳 丕賱亘乇賵鬲賵賳 亘賳丨賵 伽贍 兀賰鬲賱賷賵賳 賲乇丞 賵毓賱賶 匕賱賰 賮爻賷賰賵賳 鬲毓噩賷賱 噩爻賲賴 亘賲毓賷丕乇 丕賱胤丕賯丞 丕賰孬乇 賰賱賮丞 亘賲丕 賱丕 賷賯丕爻 .
丕賱爻賮乇 毓亘乇 丕賱夭賲丕賳 丕賱賶 丕賱賲丕囟賷 貙 丕匕丕 乇丕賯亘賳丕 兀賱賮丕 賯賳胤賵乇爻 賵丕賱匕賷 賷亘毓丿 毓賳丕 亘兀乇亘毓 爻賳賷賳 囟賵卅賷丞 貙 賮廿賳賳丕 賱丕 賳卮丕賴丿賴 賰賲丕 賷亘丿賵 丕賱賷賵賲 貙 賵廿賳賲丕 賰賲丕 賰丕賳 賷亘丿賵 賲賳匕 丕乇亘毓丞 丕毓賵丕賳 禺賱鬲 貙 賵賳乇賶 賳噩賲 丕賱卮毓乇賷 丕賱賷賲丕賳賷丞 毓賱賶 賲爻丕賮丞 侃爻賳賵丕鬲 囟賵卅賷丞 賲賳丕 賰賲丕 賰丕賳 賷鬲兀賱賯 賲賳匕 鬲爻毓 爻賳賵丕鬲 貙 賵丕匕丕 鬲胤賱毓鬲 丕賱賶 賲噩乇丞 丕賳丿乇賵賲賷丿丕 賵丕賱鬲賷 賷賮氐賱賳丕 毓賳賴丕 賲賱賷賵賳丕 爻賳丞 囟賵卅賷丞 貙 賮廿賳賰 鬲乇丕賴丕 賰賲丕 賱丕丨鬲 賲賳匕 賲賱賷賵賳賷 毓丕賲 貙 賮賷 匕賱賰 丕賱賵賯鬲 丨賷賳賲丕 賰丕賳 兀爻賱丕賮賳丕 丕賱丕賵丕卅賱 賲賳 爻賱丕賱丞 丕賱丕賳爻丕賳 丕賱賲丕賴乇 賮賷 丕賱丕毓賲丕賱 丕賱賷丿賵賷丞 "賴賵賲賵賴亘賱賷爻 "賷丿亘賵賳 毓賱賶 丕賱丕乇囟 . 賵賴賰匕丕 賰賱賲丕 乇賳賵賳丕 丕賱賶 賲爻丕賮丕鬲 丕亘毓丿 賰賱賲丕 兀賵睾賱賳丕 賮賷 丕賱鬲胤賱毓 丕賱賶 丕賱賲丕囟賷 . 丕賳 丕賱禺賱賮賷丞 丕賱丕卮毓丕毓賷丞 賱賱賲賵噩丕鬲 丕賱賰賵賳賷丞 賲鬲賳丕賴賷丞 丕賱氐睾乇 賵丕賱鬲賷 鬲鬲賰賵賳 賲賳 賲賵噩丕鬲 賲鬲賳丕賴賷丞 丕賱氐睾乇 賲賳 丕賱賮賵鬲賵賳丕鬲 鬲賳賴賲乇 毓賱賶 丕賱丕乇囟 賲賳 賰賱 丕乇噩丕亍 丕賱爻賲丕亍 貙 賵賴賷 丕賱鬲賷 鬲禺賱賮鬲 賲賳 賲乇丨賱丞 胤賮賵賱丞 丕賱賰賵賳 丨賷賳賲丕 賰丕賳 賮賷 丿乇噩丞 丨乇丕乇丞 毓丕賱賷丞 貙 賵鬲兀鬲賷 賴匕賴 丕賱賮賵鬲賵賳丕鬲 丕賱賷賳丕 賲亘丕卮乇丞 賲賳 賳丨賵 佟伲 亘賱賷賵賳 爻賳賰 賲囟鬲 貙 毓賳丿賲丕 賰丕賳 毓賲乇 丕賱賰賵賳 丕賱賵賱賷丿 .
賲賳 丕賱氐毓賵亘丞 丕賱鬲氐丿賷賯 亘禺乇賵噩 丕賱賰賵賳 賲賳 丕賱毓丿賲 亘賲毓賳丕賴 丕賱丨乇賮賷 . 賰賷賮 賷賲賰賳 亘賲賯丿賵乇 丕賱毓丿賲 丕賳 賷毓乇賮 毓賳 賯賵丕賳賷賳 丕賱賮賷夭賷丕亍 貙 丨賯賷賯丞 乇亘賲丕 丕毓鬲亘乇鬲 賲丨丕賵賱丞 噩毓賱 丕賱賰賵賳 賷兀鬲賷 賲賳 賱丕 卮賷亍 賲丨丕賵賱丞 卮丕匕丞 貙 賱兀賳 丕賱毓丿賲 賴賵 丕賱卮賷亍 丕賱匕賷 賷亘丿賵 亘丨賰賲 丕賱鬲毓乇賷賮 睾賷乇 賲賵噩賵丿 貙 賵乇亘賲丕 賰丕賳 丕賱爻丐丕賱 毓賳 賰賷賮賷丞 禺賱賯 丕賱賰賵賳 賲賳 丕賱毓丿賲 爻丐丕賱賸丕 禺丕胤卅賸丕 貙 乇亘賲丕 賱賲 鬲賰賳 鬲賱賰 賴賷 丕賱賰賷賮賷丞 丕賱鬲賷 馗賴乇 亘賴丕 丕賱賰賵賳 .
September 28, 2021
This is not a badly written book, and it has some good background material on Einstein's theories of relativity and how they could be used to achieve a sort of time travel to the future, namely by traveling into space a few light years and returning at close to the speed of light. The book title is misleading, however, because the majority of the time travel mechanisms in this book are based on more recent theories than Einstein's. Gott proposes time travel possibilities mostly using unproven fantasy land theories prevalent in today's physics like string theory, infinite parallel universes, cosmic strings, and other unproven phenomena.
So Gott's theories to support time travel are relatively bizarre, requiring things like multiple unseen dimensions around us, wormholes between universes, self-creating universes, and other unobservable marvels. Current physics supports these theories because they seem to be mathematically possible, in lieu of any actual evidence. And the actual time machines Gott proposes are so impossibly large or complicated that even a super civilization would be challenged to build them.
There is also a strange chapter on the Copernican principle which I am not sure how it relates to the rest of the book. And it is somewhat useless because of the large range of its predictions.
Overall my impression of this book is it is similar to science fiction. Interesting concepts, but purely fantasy at this point in time.
So Gott's theories to support time travel are relatively bizarre, requiring things like multiple unseen dimensions around us, wormholes between universes, self-creating universes, and other unobservable marvels. Current physics supports these theories because they seem to be mathematically possible, in lieu of any actual evidence. And the actual time machines Gott proposes are so impossibly large or complicated that even a super civilization would be challenged to build them.
There is also a strange chapter on the Copernican principle which I am not sure how it relates to the rest of the book. And it is somewhat useless because of the large range of its predictions.
Overall my impression of this book is it is similar to science fiction. Interesting concepts, but purely fantasy at this point in time.
August 9, 2015
This book is more than just another popular treatment of special and general relativity and quantum mechanics. Gott applies these theories to time travel in a 'not-wrong' fashion, i.e., consistently with we already know to be true. He discusses the theoretical possibility of time travel to the future and to the past (spoiler: both may be possible), and even describes the construction of time machines that do not violate the laws of physics as we now understand them (spoiler: you may need the energy of an entire galaxy). The book is entertaining and the exposition mostly clear. One could argue it's a must read for us fans of time travel fiction. Gott may take himself more seriously than you will, but it's a fun read.
March 18, 2018
This is a very good book on physics and time travel by somebody who has written a lot of influential papers on the subject. The beginning is very witty and frames the questions through the use of time travel in fiction and film but then it quickly delves into hard science. Early chapters will just be a review of Einstein for many people, but the later chapters are filled with interesting ideas that I wasn't really familiar with. I think the lst chapter, which is about predicting the future, really doesn't belong in this book, but otherwise I have very few criticisms.
March 8, 2021
This book is one of the best books that seriously explores time travel using actual (and somewhat possible applications of futuristic) physics. The author also digs deep into statistical data and explores the average lifespan of a species, warns never to take a maiden voyage on a ship or aircraft, and has an extensive notes section that was just as interesting as the main book itself. It helps too have some rudimentary knowledge of science, but there鈥檚 really no math and if you are willing to be patient, you will learn a lot of cool stuff!
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November 8, 2010Professor Gott starts with the familiar paradox of a time traveler going back and killing a grandparent, adds Einstein's general theory of relativity, and walks the reader through much of current physics theory while seeking ways time travel might be permitted. Along the way, he manages to use almost no mathematics through a set of simple, expressive diagrams. An excellent popular science book!
January 13, 2018
One of the two best non-fiction books I have ever read. Read it several years ago and it continues to influence my thinking. This book touched me not just intellectually, but surprisingly spiritually as well. It is one of two books I always recommend for anyone seeking a higher understanding and connection with the eternal. There truly can be a spiritual aspect to science.
March 1, 2023
Read this when I was 10. It鈥檚 a fun book that explores Einstein鈥檚 theories in concise and easy to understand ways. The author has a sense of humor too, so it鈥檚 a far cry from most dry nonfiction. A nice starter book for those interested in the subject- it is an enjoyable read while also having some substance regarding the depth and complexity of relativity.
August 18, 2017
Un librito muy interesante que ofrece mucho m谩s de lo que esperaba y te deja con ganas de m谩s.
August 26, 2021
Zamanda yolculuk olas谋l谋臒谋n谋n, kendisi de bir astrofizik莽i olan Richard Gott taraf谋ndan a莽谋klanmaya 莽al谋艧谋ld谋臒谋 bu kitapta; say谋n Gott' un bunu Einstein' 谋n kocaman bir foto臒raf谋 ve isminin oldu臒u bir kapakla sunmas谋na 莽ok da anlam veremedim. Konunun kendisi yeterince ho艧 ve ilgi 莽ekiciyken bunu Einstein' 谋 da ileri s眉rerek s眉slemeye 莽al谋艧mak yazar谋n hem kendisine hem de konuya bir nebze haks谋zl谋k etmesi gibi geldi bana. Olmasa da olurmu艧, olmasa da bu kitap yine zevkle okunurmu艧.
Bu durumu anlaml谋 h芒le getirmek isteyen edit枚r眉n bir 莽abas谋 olarak, kitab谋n i莽eri臒inde, hemen ilk sayfalarda "Akl谋n Efendisi Einstein" ba艧l谋kl谋 bir b枚l眉mle kar艧谋la艧谋yoruz. Burada Einstein' 谋n ya艧am hikayesi, genel g枚relilik ve 枚zel g枚relilik hipotezleri, Newton, Marks ve Hubble' a da de臒inilerek k谋saca anlat谋lm谋艧. Edit枚r Prof. Dr. Cengiz Yal莽谋n' 谋 bu noktada ayr谋ca tebrik ediyorum. Kitab谋n as谋l i莽eri臒inde ise Zamanda Yolculuk R眉yas谋, evrenin boyutlar谋, ge莽mi艧 ve gelece臒e yolculuk olas谋l谋klar谋, evrenin ba艧lang谋c谋, zaman makinesi yapman谋n-莽al谋艧t谋rman谋n mant谋臒谋, kozmik 艧eritler, kuasarlar, satran莽 ve fizik yasalar谋 aras谋ndaki ili艧ki gibi merakl谋s谋 i莽in son derece ilgi 莽ekici konulara yer verilmi艧. T眉m bu bilgiler de g眉nl眉k hayattan benzetmeler, ilgin莽 metaforlar kullan谋larak anlat谋ld谋臒谋 i莽in anla艧谋lmalar谋 ger莽ekten kolayla艧t谋r谋lm谋艧. Yine de "kolay" demiyorum, "kolayla艧t谋r谋lm谋艧" diyorum. 脟眉nk眉 belli bir fizik ve biyoloji bilgisi birikimi olmadan anla艧谋lmas谋 yine de pek olas谋 g枚r眉nm眉yor.
Hayat谋n farkl谋 evrelerinde yeniden okunmas谋n谋 da 艧iddetle tavsiye edebilece臒im bir kitap. Hem bilimsel bilgi birikiminizin artmas谋na hem de tecr眉be ve ya艧anm谋艧l谋kla do臒ru orant谋l谋 olarak artacak "hayata, ya艧ama ve canl谋l谋臒a farkl谋 g枚zden bakabilme" yetinize ba臒l谋 olarak baz谋 艧eyleri yeniden de臒erlendirebilece臒inizi, her seferinde ufkunuzu daha geni艧 tutabilece臒inizi d眉艧眉n眉yorum. Yazar ve bilim insan谋 J. Richard Gott genel itibariyle olduk莽a s谋k谋 莽al谋艧an bir astrofizik莽i ve kesinlikle ilgin莽 bir insan. Fakat "Gelecekten Rapor" b枚l眉m眉nde bahsetti臒i, n眉fus art谋艧谋yla ilgili b枚l眉m ve bu art谋艧谋n "herhangi bir 艧ekilde" durdurulmas谋n谋n 莽ok da k枚t眉 bir fikir olmayaca臒谋na dair s枚zleri pek i莽ime sinmedi. Kitapta yer alan bilgiye g枚re, bu, Nature' da bilimsel makaleleri yay谋mlanan bilim insan谋m谋z, ayn谋 zamanda 1969'da Kopernik 陌lkesi' nden yola 莽谋karak Berlin Duvar谋' n谋n ne zaman y谋k谋laca臒谋n谋 hesaplay谋p 枚ng枚rm眉艧 ve 枚ng枚r眉s眉 do臒ru 莽谋km谋艧. Enteresan olay! Yazara g枚re Kopernik 陌lkesi' nden hareketle gelece臒i 枚ng枚rebilmek olas谋 ve bilimsel...
陌nsan, evren ve zaman s谋rl谋 ve m眉phem. 陌nsan谋, evreni ve zaman谋 莽枚zmeye, anlamaya 莽al谋艧mak ise heyecanl谋 ve zevkli.
Bu durumu anlaml谋 h芒le getirmek isteyen edit枚r眉n bir 莽abas谋 olarak, kitab谋n i莽eri臒inde, hemen ilk sayfalarda "Akl谋n Efendisi Einstein" ba艧l谋kl谋 bir b枚l眉mle kar艧谋la艧谋yoruz. Burada Einstein' 谋n ya艧am hikayesi, genel g枚relilik ve 枚zel g枚relilik hipotezleri, Newton, Marks ve Hubble' a da de臒inilerek k谋saca anlat谋lm谋艧. Edit枚r Prof. Dr. Cengiz Yal莽谋n' 谋 bu noktada ayr谋ca tebrik ediyorum. Kitab谋n as谋l i莽eri臒inde ise Zamanda Yolculuk R眉yas谋, evrenin boyutlar谋, ge莽mi艧 ve gelece臒e yolculuk olas谋l谋klar谋, evrenin ba艧lang谋c谋, zaman makinesi yapman谋n-莽al谋艧t谋rman谋n mant谋臒谋, kozmik 艧eritler, kuasarlar, satran莽 ve fizik yasalar谋 aras谋ndaki ili艧ki gibi merakl谋s谋 i莽in son derece ilgi 莽ekici konulara yer verilmi艧. T眉m bu bilgiler de g眉nl眉k hayattan benzetmeler, ilgin莽 metaforlar kullan谋larak anlat谋ld谋臒谋 i莽in anla艧谋lmalar谋 ger莽ekten kolayla艧t谋r谋lm谋艧. Yine de "kolay" demiyorum, "kolayla艧t谋r谋lm谋艧" diyorum. 脟眉nk眉 belli bir fizik ve biyoloji bilgisi birikimi olmadan anla艧谋lmas谋 yine de pek olas谋 g枚r眉nm眉yor.
Hayat谋n farkl谋 evrelerinde yeniden okunmas谋n谋 da 艧iddetle tavsiye edebilece臒im bir kitap. Hem bilimsel bilgi birikiminizin artmas谋na hem de tecr眉be ve ya艧anm谋艧l谋kla do臒ru orant谋l谋 olarak artacak "hayata, ya艧ama ve canl谋l谋臒a farkl谋 g枚zden bakabilme" yetinize ba臒l谋 olarak baz谋 艧eyleri yeniden de臒erlendirebilece臒inizi, her seferinde ufkunuzu daha geni艧 tutabilece臒inizi d眉艧眉n眉yorum. Yazar ve bilim insan谋 J. Richard Gott genel itibariyle olduk莽a s谋k谋 莽al谋艧an bir astrofizik莽i ve kesinlikle ilgin莽 bir insan. Fakat "Gelecekten Rapor" b枚l眉m眉nde bahsetti臒i, n眉fus art谋艧谋yla ilgili b枚l眉m ve bu art谋艧谋n "herhangi bir 艧ekilde" durdurulmas谋n谋n 莽ok da k枚t眉 bir fikir olmayaca臒谋na dair s枚zleri pek i莽ime sinmedi. Kitapta yer alan bilgiye g枚re, bu, Nature' da bilimsel makaleleri yay谋mlanan bilim insan谋m谋z, ayn谋 zamanda 1969'da Kopernik 陌lkesi' nden yola 莽谋karak Berlin Duvar谋' n谋n ne zaman y谋k谋laca臒谋n谋 hesaplay谋p 枚ng枚rm眉艧 ve 枚ng枚r眉s眉 do臒ru 莽谋km谋艧. Enteresan olay! Yazara g枚re Kopernik 陌lkesi' nden hareketle gelece臒i 枚ng枚rebilmek olas谋 ve bilimsel...
陌nsan, evren ve zaman s谋rl谋 ve m眉phem. 陌nsan谋, evreni ve zaman谋 莽枚zmeye, anlamaya 莽al谋艧mak ise heyecanl谋 ve zevkli.
December 24, 2019
Even though reading this book was a chore for me, I wouldn't have rated it this low before reading the section about predictions for the future. In previous sections of the book, I was interested in what was being said and learned some new things about quantum theory. The section about the beginning of the universe (the second to last section) was the main reason this book was a chore to read. I will be the first to admit that maybe I should have just skipped this section - I am not so much of a science or math person, but I understood it just enough to try to get through it. (This was a mistake. I didn't have fun.) Even with this section, I would not have rated the book much lower. However, the last section was maddening. Gott provided estimates for the longevity of things, sure, but the estimates were so broad as to be completely obvious. Yes, there's a 95% chance the United States will not last until the year 10736. I could have told you as much without using a lick of math. If you make a broad enough range for how long something will last, of course you're bound to be right. I think you're better served by my pet theory that you're 100% likely to either die or not die tomorrow. Was this section put in entirely to annoy the hell out of me??
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June 6, 2019Kitap 眉nl眉 bir astrofizik莽i taraf谋ndan yaz谋lm谋艧. Zamanda yolculu臒u ve evrenin ba艧lang谋c谋n谋 tart谋艧谋yor. Konular谋n herkesin anlayabilece臒i seviyede basit anlat谋ld谋臒谋 s枚yleniyor ama bence en az orta seviye fizik bilgisi gerektiriyor. Kimya m眉hendisli臒i e臒itimi alm谋艧 bir ki艧i olarak ben ilk 150 sayfay谋 nispeten (%60-70 gibi) anlayabildim. Evrenin ba艧lang谋c谋 ile ilgili olan sonraki 40 sayfay谋 nerdeyse hi莽 anlamad谋m. Son b枚l眉m olan Gelecekten Rapor k谋sm谋n谋 莽ok kolay anlad谋m ve sevdim. 脰zellikle Kopernik ilkesi ilgimi 莽ekti. Bu ilkeye dayan谋larak yap谋lan hesaplamaya g枚re homo sapiens daha en az 5100 y谋l ya艧arm谋艧. (En 莽ok da 8 milyon y谋l)
Y谋ld谋z vererek de臒erlendiremedim bu kitab谋. Bunu yapmaya yetkin olmad谋臒谋m谋 d眉艧眉nd眉臒眉m i莽in.
Y谋ld谋z vererek de臒erlendiremedim bu kitab谋. Bunu yapmaya yetkin olmad谋臒谋m谋 d眉艧眉nd眉臒眉m i莽in.
September 3, 2019
I really enjoyed the fresh take on what can sometimes be a dull and dry subject. serves up humor, down to earth (for astrophysics) explanations and examples of what makes up not only the theories of time travel but what has been proven over the most recent decades about such. From Wells' to Igor Dmitriyevich Novikov's self-consistency principles, we see how the idea of going back and forth through time has not only captured our imagination but has held strong for centuries.
Will it ever be a reality? Maybe it already is... :)
Will it ever be a reality? Maybe it already is... :)
July 10, 2024
Interesante y sencillo al principio, se va complicando hasta resultarme incomprensible en su parte central. F铆sica demasiado complicada para m铆 y supongo que para la mayor铆a. A煤n as铆, se puede leer. Pero llegar al final tiene un premio inesperado: el 5掳 cap铆tulo abandona la f铆sica y entra en la especulaci贸n estad铆stica o, mejor dicho, en la predicci贸n de la duraci贸n probable de cosas o eventos tan variados como el gobierno de un partido pol铆tico, el matrimonio de cada uno o la misma especie humana. Todo ello acompa帽ado de una serie de conjeturas y reflexiones que me han parecido maravillosas. Por este 煤ltimo cap铆tulo y las cosas que me ha hecho pensar le doy las cinco estrellas.
February 12, 2018
A good read, but...
This was a good read. I am not a physicist, but I was able to understand Gott's arguments well, so in that respect it was a good book, but, there were a number of formatting and spelling errors that made the reading a bit tedious in parts. If you're interested in the physics of time, then it's worth the money.
This was a good read. I am not a physicist, but I was able to understand Gott's arguments well, so in that respect it was a good book, but, there were a number of formatting and spelling errors that made the reading a bit tedious in parts. If you're interested in the physics of time, then it's worth the money.
August 15, 2018
I had a bit of a difficult time reading this book, as I had to concentrate way too much. Hey, I鈥檓 no Einstein. But I do love time travel, so I stuck with it to the end and was rewarded with lots of interesting bits how time travel may be possible, about the Big Bang, the creation of the universe and the Copernican principle. Science rocks!
December 31, 2018
A really nice quirky overview on the possibilities of time travel from a physicist's point of view and a little history of science thrown in as well. I found it engaging and fun and easy to read and wished it would have been more in some places and less in others. If you've read Kip Thorne's books on time travel (and black holes) and enjoyed them, you'll like this one, too.
Recommended.
Recommended.
November 27, 2018
Interesante libro donde de una manera lo m谩s cient铆fica posible se intenta demostrar gracias a las teor铆as de Einstein que el viaje en el tiempo es posible. Tiene conceptos curiosos y realmente da que pensar en que el viaje en el tiempo es posible.
February 15, 2019
I had thought the book would provide interesting insight into the possibilities of time travel, which it did in a sort, but seemed to get lost in a lot of detail that made it difficult to get through.
July 6, 2022
Great book on the possibility of time travel with extra fun facts thrown in. I enjoyed the bits on the reality of science fiction the most, and has great figures and not too much jargon to make it a worthwhile read.
February 24, 2017
Uzay zaman hakk谋nda bak谋艧 a莽谋m谋 geli艧tiren bir kitap oldu. Anlat谋m谋 ba艧lang谋莽ta sade ilerledik莽e orta seviye fizik bilgisi gerektiriyor.
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