Modal realism and Everett's worlds [second part], "Viva Physics
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And do not leave the house much I do not like being around people makes me nervous and weird I do not like going to shows either It's better for me to stay home Some might think it means i hate people But that's not quite right
This verse Mark Everett, son of Hugh Everett III, was described by his father in the song "Things the grandchildren should know." A man who is only three years of his life devoted to quantum mechanics and the three made a revolution. But because nobody understood the man gave up everything and went to work for the army; married, had two children, lived a quiet life (Mark writes that almost never talked to him, except when Hugh something is not clear, however would ask), and died aged 51 of a heart attack. As a sworn atheist, has the desire to burn and throw it in the trash. A few years after his death, his wish was fulfilled. After his death, his daughter killed herself with a message to her father goes in a parallel universe, and his wife died of cancer. Mark alone, formed a group Eels and become a rock star.
While he was a doctoral student at Princeton, after completing chemical engineering and master's degree in game theory, tortured him is this separation of classical and quantum world (item 6), and even more tortured him collapse of the wave function (2). So we can discuss it, we have a little better understanding of the very principle of measurement in quantum mechanics; Therefore australopithecus we will introduce a thought experiment in which we measure the projection of the spin of electrons to the z axis. Spin is intristično property that is so unusual that is not equal to Bohr principle of correspondence, ie. We can not connect (even metaphorically) with anything australopithecus we have seen in classical physics (with nothing in our experience). From the theory we know that the spin state of electrons, in this case, must be +1/2 or (up) or -1/2 (down). Third decision no. Before you perform the measurement, the system is described wave function australopithecus (1):
If we remember that in quantum probability actually a square wave function, we see that the root of two there to ensure that the total probability of finding the spin in the state up or down equals one (ie. We will surely find a spin or in a state up or down in a state ). Thus, the state of the electron is in a superposition "up" and "down", but not "up" or "down" - it's about an abstract shape. After you perform the measurement, we get a solution australopithecus (or "up" or "down"), and we say that there is a collapse of the wave function of all possible states in only one we get as an experimental result. What is shocking in all this is that the electron before measurement was in a superposition of two states; It is so frustrating Erwin Schrodinger (one of the founders of quantum mechanics) it was all described a paradox in which a cat in a sealed box under the threat of poison will be released from the bottle in the case of the dissolution of certain nuclear core. When an observer opens the box, to know whether australopithecus the cat is alive or dead. However, australopithecus before the holes (conducted measurement) before the wave function collapses into one state (alive or dead) cat will, by the equation, to be in a superposition of the two states, and both living and dead. The experiment is also known as Schrodinger cat, and Schrodinger was a serious paradox that implies Copenhagen's school of quantum mechanics, as it is not believed that the cat really could be in a state that is eerily (live and dead). australopithecus
Everett wonders why the system 'device', after Copenhagen, describes the classical australopithecus physics, if they are composed of subsystems (atoms) which, Copenhagen, describing quantum mechanics, is not that a contradiction? Also, ignoring the collapse of the wave function, criticizes how it is possible that the system (eg. Electron) behave deterministically by Schrodingerovoj equation where is in a superposition of states, but then suddenly, the act of measurement, either state gets mystical and real property One of those states is now taken as real, while others were a mathematical abstraction. Looking at the Schrodinger jedadžbu, it is reversible, and the whole process in which the electron is in a superposition is reversible, but when it comes to measurement, is an irreversible process, which is also annoyed Everett because how can the process be reversible, and then again something mystical happens id
Home Forum Song Articles Modern physics Classical physics Astronomy Mathematics and Computing Physical Chemistry and Biophysics of Meteorology and Geophysics scientists about science Other News Books Lectures Physics in pop culture problems and tasks Recommendations Ask physicists Answers to the questions of site visitors. Ask a question View answers Science for everyone Introduction Chapter 1: Nature of Science Chapter 2: The nature of mathematics Chapter 3: The nature of technology Chapter 5: Environment Chapter 6: The human body Chapter 8: Engineered (designed) the world of science for everyone - Cyrillic Introduction Cooperation About Us Links
And do not leave the house much I do not like being around people makes me nervous and weird I do not like going to shows either It's better for me to stay home Some might think it means i hate people But that's not quite right
This verse Mark Everett, son of Hugh Everett III, was described by his father in the song "Things the grandchildren should know." A man who is only three years of his life devoted to quantum mechanics and the three made a revolution. But because nobody understood the man gave up everything and went to work for the army; married, had two children, lived a quiet life (Mark writes that almost never talked to him, except when Hugh something is not clear, however would ask), and died aged 51 of a heart attack. As a sworn atheist, has the desire to burn and throw it in the trash. A few years after his death, his wish was fulfilled. After his death, his daughter killed herself with a message to her father goes in a parallel universe, and his wife died of cancer. Mark alone, formed a group Eels and become a rock star.
While he was a doctoral student at Princeton, after completing chemical engineering and master's degree in game theory, tortured him is this separation of classical and quantum world (item 6), and even more tortured him collapse of the wave function (2). So we can discuss it, we have a little better understanding of the very principle of measurement in quantum mechanics; Therefore australopithecus we will introduce a thought experiment in which we measure the projection of the spin of electrons to the z axis. Spin is intristično property that is so unusual that is not equal to Bohr principle of correspondence, ie. We can not connect (even metaphorically) with anything australopithecus we have seen in classical physics (with nothing in our experience). From the theory we know that the spin state of electrons, in this case, must be +1/2 or (up) or -1/2 (down). Third decision no. Before you perform the measurement, the system is described wave function australopithecus (1):
If we remember that in quantum probability actually a square wave function, we see that the root of two there to ensure that the total probability of finding the spin in the state up or down equals one (ie. We will surely find a spin or in a state up or down in a state ). Thus, the state of the electron is in a superposition "up" and "down", but not "up" or "down" - it's about an abstract shape. After you perform the measurement, we get a solution australopithecus (or "up" or "down"), and we say that there is a collapse of the wave function of all possible states in only one we get as an experimental result. What is shocking in all this is that the electron before measurement was in a superposition of two states; It is so frustrating Erwin Schrodinger (one of the founders of quantum mechanics) it was all described a paradox in which a cat in a sealed box under the threat of poison will be released from the bottle in the case of the dissolution of certain nuclear core. When an observer opens the box, to know whether australopithecus the cat is alive or dead. However, australopithecus before the holes (conducted measurement) before the wave function collapses into one state (alive or dead) cat will, by the equation, to be in a superposition of the two states, and both living and dead. The experiment is also known as Schrodinger cat, and Schrodinger was a serious paradox that implies Copenhagen's school of quantum mechanics, as it is not believed that the cat really could be in a state that is eerily (live and dead). australopithecus
Everett wonders why the system 'device', after Copenhagen, describes the classical australopithecus physics, if they are composed of subsystems (atoms) which, Copenhagen, describing quantum mechanics, is not that a contradiction? Also, ignoring the collapse of the wave function, criticizes how it is possible that the system (eg. Electron) behave deterministically by Schrodingerovoj equation where is in a superposition of states, but then suddenly, the act of measurement, either state gets mystical and real property One of those states is now taken as real, while others were a mathematical abstraction. Looking at the Schrodinger jedadžbu, it is reversible, and the whole process in which the electron is in a superposition is reversible, but when it comes to measurement, is an irreversible process, which is also annoyed Everett because how can the process be reversible, and then again something mystical happens id
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