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Genevae : Apud de Tournes, 1680, 4°, (12), 154, (6), 1 Taf.; (14), 80, (6), 1 Taf.; 1695, 4°, (12), 118, (6) pp., 8 Taf.; 1682, 4°, (8), 130, (2) pp., 5 Taf.; 1695, 4°, (8), 64, (4) pp., 5 feine Pappbände im Stil d.Zt. THE FORMULATION OF BOYLE's LAW! Fifth Latin Edition of 'Spring and Weight of the Air'! 1) Nova Experimenta Physico-Mechanica de VI Aeris Elastica et eiusdem Effectibus, facta maximam partem in nova mechanica Pneumatica. Genevae : Apud de Tournes, 1680, 4°, (12), 154, (6), 1 Taf. & 2) Defensio Doctrinæ De Elatere Et Gravitate Aeris, Propositæ ab Honoratissimo Roberto Boyle, In Novis Ipsius Physico-Mechanicis Experimentis Adversus Objectiones Francisci Lini ; Ubi etiam Objectoris Funicularis Hypothesis examinatur, eaque occasione quædam Experimenta adduntur. Ab Avtore supra-dictorum Experimantorvm. Genevae : Apud de Tournes, 1680, 4°, (14), 80, (6), 1 plates. 3) Second Latin Edition of 'Spring and Weight of the Air (First continuation)'! Novorvm Experimentorvm Physico-Mechanicorum Continvatio Prima, De Aeris Elaterio Et Pondere, Nec non Eorundem Effectibus. Genevae, Apud Samuelem de Tournes, 1695, 4°, (12), 118, (6) pp., 8 eight plates, cut to page size and not folding, bound after prelims. 4) First Latin Edition of 'Spring and Weight of the Air (Second continuation)'! Experimentorum Novorum Physico-Mechanicorum Continuatio Secunda : In Qua Experimenta Varia Tum In Aere Compresso, Tum In Factitio, Instituta, circa Ignem, Animalia, &c. ; Vna cum Descriptione Machinarum Continentur. Genevae, Apud de Tournes, 1682, 4°, (8), 130, (2) pp., 5 folding plates. 5) First Latin Edition of 'Spring and Weight of the Air (Examen)'! Examen Dialogi Physici Domini T. Hobbs De Natvra Ae??ris, In iis quæ referuntur Dni. Boyle Libro De Novis Experimentis Circa Ae??ris Vim Elasticam, &c. Cum Appendice circa Dni. Hobbs Doctrinam De Fluiditate & Soliditate. Genevae : Apud de Tournes, 1695, 4°, (8), 64, (4) pp. "'The Spring and Weight of the Air', the first scientific work of Robert Boyle. Quickly established a wide reputation for its author. An air-pump in the hands of an amateur or dilettante might have served as an object of amusement and ended there, but with Boyle imagination, combined with insatiable curiosity, led him almost at once to devise experiments and to make from them deductions of the highest scientific importance. He first proved the air had weight, and that by virtue of this it became compressed near the earth to an extent that enabled it to support a column of 29 inches of mercury. He observed, however, that there were variations from day to day in the height of a mercury column which the air would support, and concluded from this 'that there may be strange Ebbings and Flowings, as it were, in the Atmosphere; or at least, that it may admit great and sudden Mutations, either as to its Altitude or its Density, from causes, as well unknown to us, as the effects are unheeded by us'. It is not clear how much Boyle owed to his predecessors. Galileo was aware that the air had weight, and he had measured the 'resistance to a vacuum' by means of a water column ; 'but the two ideas dwelt separately in his mind' (Mach, Monist, vi, 1896, 170; see F. Cajori, A History of Physics, 2nd ed., 1929, 72). Torricelli had united the two ideas and had measured a vacuum by means of mercury in 1643, but the letters to Ricci of 1644, in which the observations were described, remained unpublished until 1663. Similarly Pascal's celebrated Traitez de l'équilibre des liqueurs, et de la -pesanteur de la masse de Tair, which described the influence of altitude on a mercury column, did not appear until 1663. Likewise Boyle knew very little of Otto von Guericke's experiments, for they were not described until 1672 [Experimenta nova (ut vocantur) Magdeburgica de vacuo spatif though Schott in 1657 had described Guericke's pump. The generalization which carried Boyle's name to posterity, i.e. . Bestandsnummer des Verkäufers 60439
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