RT info:eu-repo/semantics/bookPart T1 José Ruiz-Castizo (1857–1929) A1 Zulueta Pérez, Patricia Beatriz K1 History of MMS K1 History of IFToMM K1 José Ruiz-Castizo y Ariza K1 Rational mechanics K1 Topographic instruments K1 Measurement of irregular areas K1 Planimeter AB This paper tries to analyse the figure of the mathematician, physicist, andinventor José Ruiz-Castizo y Ariza (1857–1929), Professor of Rational Mechanics atthe University of Zaragoza and Professor of Exact Sciences at the Central Universityof Madrid. Throughout a life dedicated to science, he carried out numerous jobsin his role as a teacher and researcher. Many of them, including his “Treatise onRational Mechanics”, were published in monographs and scientific journals of thetime. However, the main objective of this article is to present José Ruíz-Castizo notonly through his academic activity but also as an inventor of scientific instruments.For this, we will focus on one of his main inventions, specifically the “Tangentialevaluation Cartesian planimeter” designed by him from other existing planimeters.From this instrument designed to measure the area of any plane figure, rectilinear,curvilinear or mixtilinear, as well as other applications derived from the previousone, he patented and materialised a new proposal based on his previous work on thetheory of curves. PB Springer SN 978-3-031-31074-4 YR 2023 FD 2023 LK https://uvadoc.uva.es/handle/10324/64664 UL https://uvadoc.uva.es/handle/10324/64664 LA spa NO López-García, R., Ceccarelli, M. (eds) Distinguished Figures in Mechanical Engineering in Spain and Ibero-America. History of Mechanism and Machine Science, vol 43. Springer, Cham NO Producción Científica DS UVaDOC RD 24-nov-2024