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Annie Jump Cannon was an early twentieth-century astronomer who catalogued the spectra of over 225,000 stars. Her work was invaluable in helping others formulate and test astronomical theories. The work of Annie Jump Cannon demonstrates which of the following aspects of scientific research?
The development of techniques for creating integrated circuits by etching large numbers of transistors on a small piece of silicon most directly influenced the production of:
During the nineteenth century, scientists recognized that cholera and typhoid were spread through contaminated water supplies. By the early part of the twentieth century, major urban areas in Europe and the United States were almost free of these diseases primarily as a result of the development of:
During the mid-eighteenth century, the naturalist Carolus Linnaeus developed a key that allowed others to distinguish types of organisms that he had previously identified. His early work ordering and identifying organisms is widely seen as providing the foundation for:
The work of Nicolaus Copernicus in astronomy led to a fundamental shift in thinking about the place of humans in the universe. The philosophical importance of Copernicus's work was based on his discovery that:
