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The Physical Principles of the Quantum Theory (Englisch) Gebundene Ausgabe – 1930
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This book has board covers. Ex-library, With usual stamps and markings, In fair condition, suitable as a study copy.
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A great book if your thought needs provoking...
recall exactly why I had given up on its perusal. Well, the answer to my query--Why did I give up so long ago
on this Heisenberg tome--was immediately answered.
(1) Not a Textbook for the uninitiated.
(Then again, this was not intended to be a textbook: lectures contributing "...somewhat to the Copenhagen Spirit").
(2) Not an introduction, or lifeline, for Students.
("h-bar" is not used, sigma for sums always used instead of assuming summation over repeated indices,
Dirac Delta properties will need to be worked out independently of the text.)
(3) Absolutely required reading for those with sufficient background.
(e.g., Matrix Methods, Fourier Analysis, Integral Equations)
There simply is no way, in 1980, that I could have assimilated the contents of this great book.
However, after sufficient preparation (that is, after two previous exposures to the subject at hand),
it becomes abundantly apparent how utterly brilliant Heisenberg was at this juncture.
Here I offer some perspective supportive of my view:
(1) Heisenberg: " I have attempted to make the distinction between waves in space-time and the Schrodinger
waves in Configuration Space as clear as possible." This is wonderful pedagogy !
(2) Probabilities already developed early in the text, here Page 17, along with preceding discussion of uncertainty relations
developed " without explicit use of the wave picture". Excellent pedagogy !
(3) "This result is stranger than it seems at first glance." Page 33 when discussing Born's Probability Rule.
(4) Energy Measurements, Pages 39-44 given beautiful explication.(e.g., phase considerations).
(5) "The reader must be forewarned against an unwarrantable confusion of classical wave theory with the Schrodinger
theory of waves in phase space." Page 47, again, this is wonderful pedagogy !
(6) "For precision of thought, we therefore assume that our measurements always give average values..."(Page 49).
(7) Chapter Four, Statistical Interpretation, this should be required reading for all. ("The partition of the world into
observing and observed system prevents a sharp formulation of the law of cause and effect." Page 58.)
(8) Calculation of fluctuations in radiation field: "The Quantum Theory, which one can interpret as a particle theory or
as a wave theory as one sees fit, leads to the complete fluctuation formula."
(9) "...Ultimate justification lies in the agreement of predictions with experiment."
(10) Pages 132-137, deriving Schrodinger's Equation in an innovative manner, a tour de force.
As Heisenberg notes: " ...Schrodinger Equation, originally discovered in an entirely different manner."
There they are: Ten reasons for perusal of this most interesting document. Much more awaits !
Not a textbook, not an introduction. Not easy, even.
But, if one wants to participate, to learn, from a master physicist--that is, how he "thinks" about Quantum Theory--
then , this is your book. Two roads, physical and mathematical, are herein delineated.
As an adjunct to more detailed introductory accounts, this book is absolutely required reading.
After learning the subject from other sources this would probably be interesting to revisit to get a historical perspective, but I don't rate it high for learning from.