Ernest Henley (June 10, 1924 – March 26, 2017)
"...was universally respected throughout the field of physics as a man of creativity, honesty and great common sense."
Locating an inexpensive copy, I was compelled to a purchase. A purchase, based upon reviews read on Amazon. I felt something was amiss ! After all, here is a review in Contemporary Physics: "...concepts and terms are brought in at an elementary level with allusion to their later examination in greater depth." (2009, Vol. 50, Nr. 6). Reading that review shows that the text is considered in high regard. Thus, I wonder: Why the disconnect (between professor and student) and discontent (from students) ? Begin with a few observations....
(A) I find this textbook interesting, yet, I am unable to ascertain who the readership is intended to be. The full panoply of undergraduate physics courses needs to be firmly in hand, including the prerequisite mathematics.
(B) Read Henley and Garcia regards Jackson's Classical Electrodynamics text: "...it is beautifully written and provides an exceptionally lucid treatment of classical electrodynamics." If Jackson's tex is not to your liking, I suspect Henley and Garcia will not be, either.
(C) Read this footnote: "Many students claim that the best way to solve physics problems in undergraduate courses is the following--list the physical quantities that appear in the problem. Find the equation in the text that contains the same symbols. Insert. Hand-in." (page 293). I add: if that is the way any student solves any problem, then the book of Henley and Garcia is definitely off your list ! Now, let us survey the contents:
(1) The first four chapters assemble the 'tools,'... the detectors and the means by which numbers are arrived at through experiment. These four chapters (fifty pages) should be rather easy to assimilate. Take note: Table 1.11 (page 6) and Equation #1.12, those are your guidelines. If you do not know those few things outright, then no need to look further !
(2) The next 100-pages, or so, is a rapid-fire summary of the 'particle zoo' and introduction to quantum chromodynamics. Fourier transformations are assumed known. Dirac's Hole Theory is bypassed for a Stueckelberg-Feynman approach. This approach is to be commended (page 110). Primarily the authors follow a qualitative, semi-technical synopsis.
(3) Sixth Chapter: Structure of Subatomic Particles. I like this chapter quite a bit. Scattering (Rutherford, Mott) segues to form factors. Presented is a nice discussion of leptons as point-particles. Also, a qualitative elaboration of integral equations as applied to scattering (pages 176-177).
(4) Third Part: Symmetries and Conservation Laws. Gauge invariance introduced. Angular momentum and isospin, this is chapter eight (page 221). A qualitative description. Following which, PCT, this at a fairly mundane level. Kaon system gets a nice discussion. We read: "Kaons are a wonderful source of surprises." (pages 260-271).
(5) Interactions, next. (part four): A nice introduction to electromagnetic interaction is first. Read: "Many of the ideas that are important in quantum electrodynamics will show up in this example--Emission of a Photon by an atomic system in transition from one state to another." (see page 293). A useful section asks the question: "What experiments will give information about the interactions of Photons with Hadrons." The fifteen pages which follow will provide you with much insight.
(6) Weak Interactions:: beta decay, weak currents, neutrino masses, a brief review of chirality versus helicity, all serve to round out a fascinating tour.
(7) Earlier we were introduced to gauge invariance. Chapter twelve will elaborate on that theme. I like the fact that "...the proof of equation #12.27 is straightforward, if tedious. We shall show it for the electric field, and leave it as an exercise for the reader to prove it for the magnetic field."
(page 393; a typo mars Equation #12.37, page 395--the " i " should multiply both of the factors, px and Et ).
(8) Electroweak theory of Standard Model. Here the authors write "...the subject is complex, for details we refer the reader to texts and reviews..." So, this chapter--thirteen--is cursory, merely qualitative.
(9) Strong Interactions, elaborated upon. We were introduced to the topic earlier in the book, we get it again.
A spiral approach. Let us review a few problems from this chapter: " Do conservation laws permit terms in the pion-nucleon interaction that are quadratic in the pion wave function ? " and " What are the spins and parities of the four lowest energy states of glueballs ? " Then: " Show that the Coulomb potential solves Poisson's Equation," and "What is the range of the one-gluon exchange force ? " Thus, a wide range of problems offered for student involvement.
(10) Part five, a concentration on Models: quark models (nicely done), liquid drop and Fermi gas models, shell model and the collective model. Each of these Models is approached from a qualitative angle. The final twenty-five page chapter is an elementary elaboration of astrophysics applications. Problems concluding this chapter are elementary.
(11) There you have a summary of the content. Also, a reason (I believe) for the disparity among the reviews. Too much to grab hold of in one sitting. The book, as do a few others, attempts to cover far too many topics. It is simultaneously advanced and elementary. A few of the problems are rather advanced and some of the problems are very elementary. The qualitative discussions, throughout, are well done. You get an uneven mix of the qualitative and the quantitative. The references and bibliography span the gamut: research papers, advanced texts, and elementary expositions. Happily, there is something for everybody. Unhappily, there is too much for any one student !
However, this is an interesting book to dip into ! Thus, recommended if only for collateral study.
- 语种： 英语
- ISBN: 9812700560
- 条形码: 9789812700568
- 商品尺寸: 17.1 x 3.2 x 25.4 cm
- 商品重量: 1.32 Kg
- ASIN: 9812700560
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