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Book : Hyperspace

Author: Michio Kaku

2024-04-05 17:11:43 "However, this reopens the possibility of the weak anthropic principle— that is, that we coexist with many dead universes, and that ours is the only one compatible with life. The second controversy stimulated by Hawking's wave function of the universe is much deepe r and in fact is still unresolved. It is called the Schrodinger's cat problem. "

2024-04-05 17:10:33 "because it has no predictive power, nor can it be tested. "

2024-04-05 17:04:09 "This takes us to the "strong" version of the anthropic principle, which states that all the physical constants of the universe have been precisely chosen (by God or some Supreme Being) so that life is possible in our universe. "

2024-04-05 16:54:07 "However, if we could somehow shrink the lifetime of the proton to sev eral million years, then life would be impossible. Ther e would not be enough time to create life out of random collisions of molecules. "

2024-04-05 16:53:43 "To have life in the universe, you need a rare conjunction of many coincidences. "

2024-04-05 16:49:37 "Since space and time can exist only on each bubble, there is no such thing as space and time between the bubbles. "

2024-04-05 16:49:33 "Normally, each soap bubble is like a universe unto itself, except that periodically it bumps into anothe r bubble, forming a larger one , or splits into two smaller bubbles. The difference is that each soap bubble is now an entire ten-dimensional universe. "

2024-04-05 16:48:06 "Hawking's quantum cosmology also assumes that the wave function of the universe allows these universes to collide. Wormholes can develop and link these universes. "

2024-04-05 16:46:44 "is to verify this conjecture mathematically, to show that the wave function of the universe is large for our present universe and vanishingly small for other universes. "

2024-04-05 16:45:30 "According to this picture, the wave function of the universe spreads out over all possible universes. "

2024-04-05 16:43:24 " parallel universes, the wave function of the universe. "

2024-04-05 16:42:23 "Hawking's new idea was to treat the entire universe as though it were a quantum particle. "

2024-04-05 16:41:21 "However, some of the cloud would spread out over all space, out to Mars and even beyond the solar system "

2024-04-05 16:40:45 " Thus by simply looking at a thundercloud, we can rapidly estimate the probability of finding large concentrations of water and dust in certain parts of the sky. "

2024-04-05 16:40:38 "The starting point of quantum theory, we recall, is a wave function that describes all the various possible states of a particle. "

2024-04-05 16:39:25 "Hawking, starting as a pur e classical relativist rather than a quantum theorist, approaches the problem from the other point of view. "

2024-02-23 10:50:51 "Quantum theory, by contrast, is a theory of the microcosm, where sub atomic particles are held together by particlelike forces dancing on the sterile stage of space-time, which is viewed as an empty arena, devoid of any content. "

2024-02-23 10:49:37 "could predict all the chemical properties of matter found in the uni verse. To them, chemistry would no longer be a fundamental science. From now on, it would be "applied physics." "

2024-02-23 10:49:29 "quantum physicists such as Paul A. M. Dirac were declaring that all of chemistry could be derived from first principles. "

2024-02-23 10:48:31 "What is matter made of? What holds it infinite variety of forms, such as gases, ceramics, glasses, lightning bolts, stars,

together? Why does it come in an metals, rocks, liquids, crystals, and so on? T h e new theory was

christened quantum mechanics, and gave us the first comprehensive formulation with which to pry open the secrets of the atom. "

2024-02-23 10:46:59 " The energy necessary to probe this tiny distance can be computed, and it is called the Planck energy, or 10 1 9 billion electron volts. "

2024-02-23 10:46:07 "Oskar Klein made several improvements on the theory, stating that per haps the quantum theory could explain why the fifth dimension rolled up. "

2024-02-23 10:45:01 " As they moved per pendicular to Lineland, they would encounte r an infinite numbe r of parallel line worlds that coexisted with their universe "

2024-02-23 10:43:54 " In fact, Kaluza's theory raised mor e questions than it answered. Th e obvious question to ask Kaluza was: Wher e is the fifth dimension? Since all earthly experiments showed con clusively that we live in a universe with three dimensions of space and one of time, the embarrassing question still remained. "

2024-02-23 10:43:34

"and gravity, you will not achieve anything because there is still the nuclear force." He realized that the nuclear force was outside Kaluza Klein theory "

2024-02-23 10:40:15 "For the first time, someone had found a use for the fourth spatial dimension: to unite the laws of physics! "

2024-02-12 10:53:22 "However, according to special relativity, time can beat at different rates, depending on how fast one is moving. Time being the fourth dimension means that time is intrinsically linked with movement in space. "

2024-02-12 10:51:33 "Th e meaning of time as being the fourth dimension is that time and space can rotate into each other in a mathematically precise way. "

2024-02-12 10:51:14 "to rotate an object by 90 degrees, we can turn its length into width and its width into depth. "