This small book by Jeff Hughes explores how science in the twentieth century changed everything as it spread from universities to the government and to the military. It has good information about the Manhattan Project in “condensed form,” but it spends time and words on the wisdom of “Big Science.” The Manhattan Project was symbolic of the greatest change of all; “…science’s growth in scale, scope, and cost as it transformed from …small groups or individuals into…”Big Science”—a large-scale enterprise that is carried out by multidisciplinary and multinational groups of researches, cost enormous sums, demanded massive institutions of its own, and often represents a significant fraction of national budgets.” The Project brought together American, British, Canadian, and refugee European scientists to design and build the world’s first atomic bombs. It employed 130,000 people, cost $2 billion, and changed the world forever.
The book gives a brief history of the scientists who began to unlock the mysteries of the atom. Henri Becquerel accidently discovered that uranium had “spontaneous emission” recorded on a photographic plate. Marie Curie suggested the name “radioactivity.” Earnest Rutherford collaborated with Frederick Soddy and many others to work out the theory of radioactive decay by emission of alpha, beta, and gamma. Hans Geiger developed methods for measuring the emissions. Enrico Fermi and co-workers discovered that elements bombarded with neutrons could be turned into isotopes of other elements. Otto Hahn and Fritz Stassman reported they had apparently produced barium by bombarding uranium with neutrons. Lise Meitner and Otto Frisch deducted that “a splitting” had been achieved. Frisch conferred with a biologist who explained that biological cells dividing was called “fission,” and the term stuck. Researchers around the world began replicating the results. Continue reading