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Aestimatio : Critical Reviews in the History of Science
Galileo's Instruments of Credit: Telescopes, Images, Secrecy2015 •
What are the historical evidence concerning the turning of the spyglass into an astronomical instrument, the telescope? In Sidereus Nuncius and in his private correspondence Galileo tells the reader what he did with the telescope, but he did not disclose the existence of a theory of the instrument. Still, the instruments which Galileo produced are extant and can be studied. We establish the knowledge of optics that Galileo had as it can be read off from the telescopes he constructed and the way he put them to use. Galileo resolved optical difficulties associated with illumination, resolution, field of view, and ultimately magnification. His optical knowledge was well thought through, originated as it did in radically new optical insights.
The claim that Galileo Galilei (1564–1642) transformed the spyglass into an astronomical instrument has never been disputed and is considered a historical fact. However, the question what was the procedure which Galileo followed is moot, for he did not disclose his research method. On the traditional view, Galileo was guided by experience, more precisely, systematized experience, which was current among northern Italian artisans and men of science. In other words, it was a trial-and-error procedure—no theory was involved. A scientific analysis of the optical properties of Galileo's first improved spyglass shows that his procedure could not have been an informed extension of the traditional optics of spectacles. We argue that most likely Galileo realized that the objective and the eyepiece form a system and proceeded accordingly.
2019 •
What are the historical evidence concerning the turning of the spyglass into an astronomical instrument—the telescope? In Sidereus Nuncius and in his private correspondence Galileo tells the reader what he did with the telescope, but he did not disclose the existence of a theory of the instrument. Still, the instruments which Galileo produced are extant and can be studied. With replicas of Galileo's telescopes that magnify 14 and 21 times, we have simulated and analyzed Galileo's practices as he reported them in Sidereus Nuncius. On this ground, we propose a new solution to this old problem. We establish the knowledge of optics that Galileo had as it can be read off from the telescopes he constructed and the way he put them to use. Galileo addressed optical difficulties associated with illumination, resolution, field of view, and magnification. His optical knowledge was well thought through, originated as it did in a radically new optical framework. 1 Introduction According ...
Celestial Novelties on the Eve of the Scientific Revolution: 1540-1630
Galileo, Reliable Observer: Astronomical Accuracy and the Optical Limits of the Telescope2013 •
Science in Context
Galileo in Context: An Engineer-Scientist, Artist, and Courtier at the Origins of Classical Science2001 •
Cette étude montrera que la confirmation expérimentale des conjectures constituait chez Galilée l'objet d'un souci constant, et ce dès le début de son activité scientifique. À l'appui de cette thèse, je citerai ses premiers travaux expérimentaux et montrerai avec quelle profondeur il était capable d'analyser par lui-même ses résultats. Je démontrerai ensuite qu'il a discuté de ses résultats avec d'autres scientifiques afin de confirmer ses intuitions initiales. C'est en les consultant et en bénéficiant de leurs conseils qu'il put mener ses intuitions à leur état final. Abstract: This study aims to show that the experimental confirmation of his conjectural ideas was a constant concern for Galileo from the very beginning of his scientific activity. In order to support my view, I shall quote his early experimental work and first show the extent to which he was able to analyse his results in depth by himself. Then I shall give evidence that he discussed his results with other scientists to help confirm his initial intuitive ideas. He consulted with them and their advice helped him to come to his final conclusion regarding his insight.
The Journal of Ecclesiastical History
Getting the Reformation wrong. Correcting some misunderstandings. By James R. Payton Jr. Pp. 272. Downers Grove, Il: IVP Academic, 2010. $23 (paper). 978 0 8303 3880 62011 •
Paper Presentation at National Seminar of Music and Dance organised by Navya Nataka Samiti, Hyderabad
Nayaka & Nayika Bhedas in Rudrabhatta's Rasakalika: Deviations from Naatyashastra2023 •
Magazine littéraire
LE MAÎTRE CACHÉ ; essai de restitution d'un ouvrage occultiste ayant exercé une influence prépondérante sur la littérature fin de siècle.1986 •
Managing the Change: Tasks of Post-Mining in Ukraine / Editors: Christian Melchers, Peter Goerke-Mallet, Natalia Lubenska; Technische Hochschule Georg Agricola
Formation and Development of Post-Mining Geosystems in the Lviv-Volyn Coal Basin2023 •
American Journal of Medical Genetics
Non‐specific X‐linked mental retardation: Linkage analysis in MRX2 and MRX4 families revisited1994 •
PROSIDING SEMINAR NASIONAL LINGKUNGAN LAHAN BASAH
Mineralisasi nitrogen pada tanah tukungan dengan umur yang berbeda2019 •
Nasi Kotak Ayam Goreng Lezat Bojonegoro
MURAH — WA : 0813–3339–2171 (TSEL), Nasi Kotak Ayam Goreng Lezat Bojonegoro1999 •
Arabian Journal of Chemistry
Natrolite zeolite: A natural and reusable catalyst for one-pot synthesis of α-aminophosphonates under solvent-free conditions2017 •