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It offers a methodical, step-by-step approach. Useful tools and consistent terminology are the most attracting feature of this volume. It is well-illustrated; and controversial issues are highlighted in the "Notes" sections at the end of each chapter. It has illustrative problems at the end of each chapter, with solutions provided at the end.
Interestingly, the appendix covers many important aspects that are needed at a more advanced stage. Useful tools for the understanding of NMR are developed at appropriate stages. These include: the box notation for coherences, populations, density matrices and transitions; the origin of NMR spectra from individual coherence terms in the density matrix; origin of 2-D NMR signals as well as many important concepts in Fourier Transform NMR are described. The origins of relaxation enjoy a very readable and simplistic approach in the last chapter.
Whenever simplistic approximations are used, the author never claims of completeness or rigour. Distinction is made between terms that are physically correct and terms that are sometimes misleading, but enjoy widespread use in the NMR spectroscopy convention. The essential tools in quantum mechanics are outlined, product operator descriptions are used frequently and repetitively, that enhances understanding and provides more practice. Pictorial representations have been given where possible, a view-point beginners like myself find very useful.
One drawback, is a careful side-lining of the very important technique of using pulse-field gradients, although their cousin technique, named pulse-cycles is quite elaborately explained. I hope, the next issue of the book would also cover up this important technique.
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It is difficult to put into words the boundless joy that accompanies the reading of these letters. Here is Lowry at his most winkingly self-deprecatory, literarily allusive and, above all, charming and downright funny. For anyone who values the English Language and English literature highly; as, in fact, necessary to life, as Lowry did, these letters will hold you spellbound. Here is indeed the record of a man who, quite literally, lived and died for language and literature. As his most famous letter here, the one to his publisher which ultimately led to the publication of Under The Volcano, has it, "...but just the same in our Elizbethan days we used to have at least passionate poetic writing about things that will always mean something and not just silly ... style and semicolon technique: and in this sense I am trying to remedy a deficiency, to strike a blow, to fire a shot for you as it were, roughly in the direction, say, of another Renaissance: it will probably go straight through my brain but that is another matter."
It is clear from almost every letter here, that Lowry was trying his damnedest,in all his writings, to live up to this manifesto; that, despite the continual tragedies of his life, he was always picking himself up and wringing from his life "passionate poetic writing", which, it is clear from these letters, was, to a great extent, lived as a literary endeavour.
That the shot did eventually go through his brain, so to speak, was not entirely unexpected by Lowry or anyone who knew him. - But neither was Sir Walter Ralegh's unjust execution. - Ultimately then, these collected letters live up to the title: Sursum Corda!-Lift up your hearts!-Here is page upon page of writing about things that will always mean something: Love of life, literature, words and a delight in language in and of itself.-
Unrealistic though my expectaation of their reading of these two massive tomes may be, I would recommend them to anyone who suffers from the peculiar fate of being human.
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