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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.
Posted December 12, 2009
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Dr Feynman's reputation for making fundamental concept of modern physics is well deserved. These lectures are an easy, accessible read which clearly explain the substance of physical laws - including quantum mechanics - without requiring mathematical knowledge.
In spite of this, this is not a 'dumbed down' popularization. These are substantive lectures. You need to have a basic ability to read, understand, and think through Feynman's explanations.
I enjoyed it very much.
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Posted January 24, 2015
This series of lectures not only gave easily understood explanations of some difficult physics but also gave some wonderful insight into the
workings of the human mind... namely Dr. Feynman's.
I recommend reading a chapter and then watching the corresponding lecture that was originally filmed by the BBC, which can be found on
any of several sites on the internet. This enriched both the experience of reading the book and seeing the videos.
Thanks to Dr. Feynman I now actually understand the double-slit experiment!
Posted January 5, 2009
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