What is involved then in radioactivity and in the sun is “nuclear energy”. That is the proper name for it and in the next section we will consider the subsequent history of the nuclear energy that broke upon the startled consciousness of scientists as the 20th century opened and which, less than half a century later, was to face mankind with untold consequences for good and for evil.

FOOTNOTES

[1]“Mass” is the correct term, but “weight”, which is a somewhat different thing, is so commonly used instead that in this book I won’t try to make any distinction.

QUOTATION CREDIT

[Inside front cover] Copyright © by Abelard-Shuman, Ltd., New York. Reprinted by permission from Inside the Atom, Isaac Asimov, 1966.

PHOTO CREDITS

[Cover] The Metropolitan Museum of Art
[Page facing inside cover] The “Horsehead” Nebula in Orion. Hale Observatories.
[Author’s Photo] Jay K. Klein
[Contents page] & [page 4] Lick Observatory
Page
[7] New York Public Library
[9] From Discovery of the Elements, Mary E. Weeks, Chemical Education Publishing Company, 1968.
[12] Library of Congress
[15] Sir George Thomson
[18] Burndy Library
[19] New York Public Library
[21] Copyright © 1965 by Barbara Lovett Cline, reprinted from her volume The Questioners: Physicists and the Quantum Theory by permission of Thomas Y. Crowell Company, Inc., New York.
[22] & [23] Curie Foundation, Institute of Radium
[26] Academic Press, Inc.
[29] Van Nostrand Reinhold Company
[31] Top, Nobel Institute; bottom, from Discovery of the Elements, Mary E. Weeks, Chemical Education Publishing Company, 1968.
[32] From Discovery of the Elements, Mary E. Weeks, Chemical Education Publishing Company, 1968.
[34] Top, Nobel Institute; bottom, Niels Bohr Institute.
[36], [42], [44], & [45] Nobel Institute
[48] Academic Press, Inc.
[49] From Discovery of the Elements, Mary E. Weeks, Chemical Education Publishing Company, 1968.
[60] Curie Foundation, Institute of Radium

★ U.S. GOVERNMENT PRINTING OFFICE: 1975—640—285/13

A word about ERDA....

The mission of the U. S. Energy Research & Development Administration (ERDA) is to develop all energy sources, to make the Nation basically self-sufficient in energy, and to protect public health and welfare and the environment. ERDA programs are divided into six major categories: