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pro vyhledávání: '"Anne C. Van Helden"'
Autor:
Anne C. Van Helden
Publikováno v:
Annals of Science. 51:477-495
Summary In 1714, the Dutch scholar Willem Jacob's Gravesande published a theoretical essay on how to optimize the air-pump. Although his paper did not attract much attention, there was one important supplier of air-pumps who knew about it: the Leiden
Autor:
Rob H. Van Gent, Anne C. Van Helden
Publikováno v:
Annals of science. 56(1)
Ever since they began to take an interest in lens grinding, the brothers Christiaan and Constantijn Huygens searched for high-quality glass to turn in to lenses. Historical research in combination with optical measurements on preserved lenses has all