量子論: 神은 주사위를 던지는가?* 이익춘** quantum theory: does
TRANSCRIPT
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() 551 (2016) 75-97
: ?*
**1)
Quantum Theory: Does God Play Dice?*
Ikchoon Lee**
. Copenhagen
. - 2
. EPR
. Entanglement()
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Niels Bohr
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Letters) 1982 Alain Aspect Vienna, Geneva
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REFERENCES
Clegg, B. 2014. The Quantum Age: How the Physics of the Very Small has
Transformed Our Lives. Clays Ltd., St Ives Plc.
Clegg, B. 2006. The God Effect: Quantum Entanglement, Sciences Strangest
Phenomenon. St. Martins Griffin, New York.
Fayer, M. D. 2010. Absolutely Small: How Quantum Theory Explains Our Everyday
World. Amacom, New York.
Ford, K. W. 2011. 101 Quantum Questions: What You Need to Know About the
World You Cant See. Harvard University Press, Cambridge.
Gribbin, J. 1984. In Search of Schrdingers Cat: Quantum Physics and Reality.
Bantam Books, New York.
Gribbin, J. 2014. Computing with Quantum Cats: From Colossus to Qubits.
Prometheus Books, New York.
Kumar, M. 2011. Quantum: Einstein, Bohr and the Great Debate About the Nature
of Reality. W. W. Norton & Co., New York.
Levine, I. N. 2000. Quantum Chemistry. 5th Ed., Prentice Hall, New York.
Musser, G. 2015. Spooky Action at a Distance: The Phenomenon That Reimagines
Space and Time-and What It Means for Black Holes, the Big Bang, and
Theories of Everything. Scientific American, Farrar, Straus and Giroux, New
York.
Radin, D. 2006. Entangled Minds: Extrasensory Experiences in a Quantum Reality.
Paraview Pocket Books, New York.
Rosenblum B. and Kuttner, F. 2011. Quantum Enigma: Physics Encounters
Conciousness. 2nd Ed., Oxford University Press, Oxford.
Zettili, N. 2001. Quantum Mechanics: Concept and Application, Wiley, Chichester.