The Character of Physical Law (Messenger Lectures, 1964) (Paperback)

~ Richard Feynman (Author)

Editorial Reviews

Review

"...Fascinating...an insight into the thought processes of a great physicist."
— Times Literary Supplement

Product Description

In these Messenger Lectures, originally delivered at Cornell University and recorded for television by the BBC, Richard Feynman offers an overview of selected physical laws and gathers their common features into one broad principle of invariance. He maintains at the outset that the importance of a physical law is not "how clever we are to have found it out, but . . . how clever nature is to pay attention to it," and tends his discussions toward a final exposition of the elegance and simplicity of all scientific laws. Rather than an essay on the most significant achievements in modern science, The Character of Physical Law is a statement of what is most remarkable in nature. Feynman's enlightened approach, his wit, and his enthusiasm make this a memorable exposition of the scientist's craft. The Law of Gravitation is the author's principal example. Relating the details of its discovery and stressing its mathematical character, he uses it to demonstrate the essential interaction of mathematics and physics. He views mathematics as the key to any system of scientific laws, suggesting that if it were possible to fill out the structure of scientific theory completely, the result would be an integrated set of mathematical axioms. The principles of conservation, symmetry, and time-irreversibility are then considered in relation to developments in classical and modern physics, and in his final lecture Feynman develops his own analysis of the process and future of scientific discovery. Like any set of oral reflections, The Character of Physical Law has special value as a demonstration of the mind in action. The reader is particularly lucky in Richard Feynman. One of the most eminent and imaginative modern physicists, he was Professor of Theoretical Physics at the California Institute of Technology until his death in 1988. He is best known for his work on the quantum theory of the electromagnetic field, as well as for his later research in the field of low-temperature physics. In 1954 he received the Albert Einstein Award for his "outstanding contribution to knowledge in mathematical and physical sciences"; in 1965 he was appointed to Foreign Membership in the Royal Society and was awarded the Nobel Prize.

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Product Details

• Paperback: 173 pages
• Publisher: The MIT Press (2001)
• Language: English
• ISBN-10: 0262560038
• ISBN-13: 978-0262560030
• Product Dimensions: 8.1 x 5.3 x 0.5 inches
• Shipping Weight: 8 ounces (View shipping rates and policies)
• Average Customer Review: 4.5 out of 5 stars  See all reviews (30 customer reviews)
• Amazon.com Sales Rank: #47,954 in Books (See Bestsellers in Books)

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Customer Reviews

Most Helpful Customer Reviews

40 of 44 people found the following review helpful:

5.0 out of 5 stars Feynman Delivers, September 11, 2003

By	Paul A. Jackson "Paul Jackson" (Fairfax Station, VA USA) - See all my reviews (REAL NAME)

This is yet another book that attempts to convey the essence of physics to common people. After explaining exactly why it can't be done, arguing that you'll never get it, Feynman goes right ahead and does it anyway.

For each topic, you get a feel for his goal in covering a topic. He explains gravity, yes, to explain gravity, but also because by explaining it he can also convey what essential properties gravity has that other laws have.

He also explains the difference between fundamental laws and the consequences of those laws. That the individual laws are reversible, but that probability is responsible for the arrow of time. He spends a lot of time showing the difficult relationship between the basic laws (which are reversible) and the irreversibility of events. Both are characteristics of the physical universe but the latter is not a fundamental law. The latter is a logical outcome of them.

So there's a hierarchy, which goes; fundamental laws like gravity at the ground level, consequences of them like irreversibility and surface tension at one level up, organic chemistry further up, then eventually concepts like tree, frog, man, pain, beauty, good and evil - each at a higher level, but based upon the levels below them, and difficult to fully predict using only the laws of the lower levels. The levels can be extended up and down. Below gravity is the unification theory of everything. Above good and evil are love, politics, etc.

And then he asks, of the extremes on this hierarchy, the fundamental laws and the most abstract concepts, which is closest to God? After asking for patience with his religious reference, he spends little time before revealing his belief that the question is flawed. To understand God is to understand how the levels interrelate; how the fundamental laws were "chosen" so that they would lead to the unfolding of all the beautiful complexity that we see around us.

Is this what you want to learn? Why else do we read these books than to attempt to gain a bit more insight into the eternal questions. Most authors that tackle the nature of the universe have a theological axe to grind (the need for God or not) and can't hide it. This book did more on this topic, with fewer pages, while offending me the least because of any theological bias (either way), than anything I've read before.

17 of 18 people found the following review helpful:

5.0 out of 5 stars I read this book maybe once a month, January 15, 1999

By A Customer

This review is from: The Character of Physical Law (Modern Library) (Hardcover)

Every time I return to this book I pick up on more of Feynman's explanations. From almost beginning to understand angular momentum, to getting a feel for gravity, and how many laws have been integrated. For a novice at physics but with a keen interest this book gives an excellent background and, for me, is a joy to read each time, I can almost hear Feynman making his lectures and sharing jokes with his students. Each time I come away from reading this book I find myself pondering more about various aspects of physics and get a clearer idea of other books to buy to continue my current hobby of understanding the way the universe works just a little better (hopefully anyway :)

14 of 15 people found the following review helpful:

4.0 out of 5 stars The beauty of physical laws, September 8, 2002

By	Esther Nebenzahl (Cascais Portugal) - See all my reviews

This review is from: The Character of Physical Law (Modern Library) (Hardcover)

One the greatest theoretical physicists and popular lecturer, Feynman expresses his view on the puzzles, controversies, and problems at the core of physical theory. He uses as an example the law of gravitation to show that despite the simplicity of physical laws, they are not exact, there is always a mystery, always a place where there is further work to be done, so "scientists must stick their heads out." And what is most remarkable is not what scientists have been able to discover, but what nature has taught us. Feynman stresses the importance of mathematics as the key to any system of scientific laws (mathematics is more than just a language, it is language plus logic). This is a series of lecturers to be read preferably by those individuals who have a solid background in physics, otherwise you may find your neurons will not know in which direction they should fire! As Paul Davis rightly says: "theoretical physics is one the hardest of human endeavors, combining as it does subtle and abstract concepts that normally defy visualizations with a technical complexity that is impossible to master in its entirety." Feynman did have the genius to deal with it!