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Download e-book for iPad: A Brief History of Time: From the Big Bang to Black Holes by Stephen W. Hawking, Ron Miller, Carl Sagan

By Stephen W. Hawking, Ron Miller, Carl Sagan

ISBN-10: 055305340X

ISBN-13: 9780553053401

Stephen Hawking, essentially the most outstanding theoretical physicists in background, wrote the trendy vintage a short historical past of Time to assist nonscientists comprehend the questions being requested by way of scientists this day: the place did the universe come from? How and why did it start? Will it come to an finish, and if this is the case, how? Hawking makes an attempt to bare those questions (and the place we are searching for solutions) utilizing not less than technical jargon. one of the subject matters gracefully lined are gravity, black holes, the large Bang, the character of time, and physicists' look for a grand unifying concept. this can be deep technology; those recommendations are so substantial (or so tiny) as to reason vertigo whereas interpreting, and one can not help yet surprise at Hawking's skill to synthesize this tough topic for individuals now not used to pondering such things as exchange dimensions. the adventure is definitely worthy taking, for, as Hawking says, the gift of realizing the universe could be a glimpse of "the brain of God."

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The following year, Lee and Yang received the Nobel Prize for their idea. It was also found that the weak force did not obey the symmetry C. That is, it would cause a universe composed of antiparticles to behave differently from our universe. Nevertheless, it seemed that the weak force did obey the combined symmetry CP. That is, the universe would develop in the same way as its mirror image if, in addition, every particle was swapped with its antiparticle! However, in 1964 two more Americans, J.

Interference can also occur for particles, because of the duality introduced by quantum mechanics. A famous example is the so-called two-slit experiment Figure 4:2. html (2 of 5) [2/20/2001 3:14:40 AM] A Brief History of Time - Stephen Hawking... Chapter 4 Figure 4:2 Consider a partition with two narrow parallel slits in it. On one side of the partition one places a source of fight of a particular color (that is, of a particular wavelength). Most of the light will hit the partition, but a small amount will go through the slits.

Eddington was shocked by that implication, and he refused to believe Chandrasekhar’s result. Eddington thought it was simply not possible that a star could collapse to a point. This was the view of most scientists: Einstein himself wrote a paper in which he claimed that stars would not shrink to zero size. The hostility of other scientists, particularly Eddington, his former teacher and the leading authority on the structure of stars, persuaded Chandrasekhar to abandon this line of work and turn instead to other problems in astronomy, such as the motion of star clusters.

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A Brief History of Time: From the Big Bang to Black Holes by Stephen W. Hawking, Ron Miller, Carl Sagan

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