Six Easy Pieces 费恩曼《物理的精髓》 pdf pdb 阿里云 极速 mobi caj kindle 下载

　　This book reprints the six easiest chapters from Feynman's

celebrated Lectures on Physics (LJ 12/15/63), which the Nobel

Prize-winning scientist delivered from 1961 to 1963 at the

California Institute of Technology. Intended for as wide an

audience as possible, these chapters are primarily qualitative in

nature, with a minimum of formal mathematics. They discuss atoms,

basic physics, the relation of physics to other sciences, the

conservation of energy, gravitation, and quantum behavior. While

this informative work provides a relevant historical perspective on

the essentials of physics, the result is somewhat superficial.

Nonetheless, because Lectures on Physics is out of print and

because the information is still relevant, reprinting these

specific chapters was probably a realistic move. The material will

be readily understood by scholars, physics students, and informed

lay readers. Recommended for academic and public libraries. (Audio

tape and CD packages are also available.)-Donald G. Frank, Harvard

Univ. Lib., Cambridge, Mass.

Copyright 1994 Reed Business Information, Inc. --This text

refers to an out of print or unavailable edition of this

title.

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What keeps the electrons from simply falling in? This principle: If they were in the nucleus, we would know their position precisely, and the uncertainty principle would then require that they have a very large (but uncertain) momentum, i.e., a very large kinetic energy. With this energy they would break away from the nucleus. They make a compromise: they leave themselves a little room for this uncertainty and then jiggle with a certain amount of minimum motion in accordance with this rule.

There was an interesting early relationship between physics and biology in which biology helped physics in the discovery of the conservation of energy, which was first demonstrated by Mayer in connection with the amount of heat taken in and given out by a living creature.

A poet once said, “The whole universe is in a glass of wine.” We will probably never know in what sense he meant that, for poets do not write to be understood. But it is true that if we look at a glass of wine closely enough we see the entire universe.

In order to verify the conservation of energy, we must be careful that we have not put any in or taken any out. Second, the energy has a large number of different forms, and there is a formula for each one. These are gravitational energy, kinetic energy, heat energy, elastic energy, electrical energy, chemical energy, radiant energy, nuclear energy, mass energy. If we total up the formulas for each of these contributions, it will not change except for energy going in and out.

书籍介绍

The six easiest chapters from Feynmans landmark work, Lectures on Physics specifically designed for the general, non-scientist reader.