Issues

The research that must be done on men and machines in supersonic flight is outlined by the Director of Aeronautical Research for the National Advisory Committee for Aeronautics.

Pouring the evidence of many kinds of science into a single pot to answer this question, the author, an astrophysicist, finds that one is pushed successively from speculating on the origin of the earth to speculating on the origin of the solar system, the origin of stars, of nebulae, of galaxies, of the universe—on to the beginning of time.

The enormous speeds with which atomic particles smash into target materials are attained as much by ingenuity as by bigness. The author a physicist in the University of California's Radiation Laboratory, describes how different kinds of atomic accelerators operate.