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] Thorne Films
Page facing inside front cover The “Horsehead” Nebula in Orion, Hale Observatories.
Author’s Photo Jay K. Klein
Contents pages Lick Observatory
[68] Dr. Erwin W. Mueller, The Pennsylvania State University
[70] Yerkes Observatory
[86] From Discovery of the Elements, Mary E. Weeks, Chemical Education Publishing Company, 1968.
[89] The Central Press Photos, Ltd., and Sir John Cockcroft
[91] Ernest Orlando Lawrence Livermore Laboratory
[93] Samuel A. Goudsmit
[96] & [97] Nobel Institute
[99] Copyright © 1965 by Barbara Lovett Cline, reprinted from her volume The Questioners: Physicists and the Quantum Theory by permission of Thomas Y. Crowell, Inc., New York.
[105] & [106] Nobel Institute
[107] Alan W. Richards

★ U.S. GOVERNMENT PRINTING OFFICE: 1975——640—285/14

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:

· CONSERVATION OF ENERGY—More efficient use of existing energy sources, development of alternate fuels and engines for automobiles to reduce dependence on petroleum, and elimination of wasteful habits of energy consumption.

· FOSSIL ENERGY—Expansion of coal production and the development of technologies for converting coal to synthetic gas and liquid fuels, improvement of oil drilling methods and of techniques for converting shale deposits to usable oil.

· SOLAR, GEOTHERMAL, AND ADVANCED ENERGY SYSTEMS—Research on solar energy to heat, cool, and eventually electrify buildings, on conversion of underground heat sources to gas and electricity, and on fusion reactors for the generation of electricity.