Many mid-nineteenth-century American astronomers who added little or nothing to the advancement of knowledge nevertheless merit attention for their efforts to advance science in a developing nation. They wrote needed textbooks, developed scientific exchanges, and attempted, not always with lasting success, to establish scientific institutions. O. M. Mitchel's trials with the Cincinnati Observatory and his journal The Sidereal Messenger are more sympathetically understood in the context of science in a developing nation than as scientific research. The theme of science in (...) a developing nation leads to a Whiggish approach to nineteenth-century American science, an approach in this particular case warranted by historical evidence. (shrink)

By the middle of the nineteenth century science was developing into a profession demanding advanced training and devotion to research. American institutions, however, were still better suited to an earlier stage of popular science. Many of the difficulties and frustrations for would-be scientists created by the time lag in institutional change are illustrated in the career of Cleveland Abbe. In the fifteen years between 1856 and 1871 his attempts to become an astronomer touched upon many significant aspects of American science (...) as a profession, including the American observatory movement, the creation of graduate education, government support for science, and the tension between the joint goals of the increase and the diffusion of knowledge. (shrink)

DURING THE SECOND DECADE of the twentieth century at least three different hypotheses involving the radial velocities of spiral nebulae appeared in astronomical journals, marking the introduction of a new field of study for astronomers. Willem de Sitter argued that a velocity-distance relation would exist if space were curved.' W. W. Campbell speculated on a possible link between radial velocities and evolutionary stages of nebulae.2 And V. M. Slipher announced his belief that the radial velocities of spiral nebulae were a (...) reflection of our galaxy's motion relative to the nebulae. 3 The hypotheses were similar in that each created a theoretical framework within which the measurement of radial velocities of spiral nebulae was viewed as important. The origins of the hypotheses and their consequences for developments n astronomy were, however, dissimilar. (shrink)

The development of radar, jet propulsion, ballistic missiles and the atomic bomb during the Second World War established and made visible to an unprecedented degree governmentally supported and directed research and development. National survival was now seen to depend on the mobilisation of a country's talents and resources in science and technology for military purposes.Prior to the Second World War, the National Advisory Committee for Aeronautics had established its own role in research. It also established the legitimacy of governmental patronage (...) for scientific research far beyond aeronautics. It was during that period that American politicians and the organs of public opinion became convinced and persuaded the electorate to think that science was indispensable for national security and well-being. A very great deal has been accomplished since then, but the credit for a pioneering role in the conduct of research with the financial support of the federal government must be given to the National Advisory Committee for Aeronautics. (shrink)