M. TORRINI, La natura della nuova scienza.

V. CASTELLANI, L'astrofisica stellare

Articoli

AD MESKENS, Some new biographical data about Michiel Coignet
The correspondence of the Jesuit John Hay with Christopher Clavius reveals some interesting details of the life and work of the Antwerpen instrument maker Michiel Coignet.

Y. ZIK, Galileo and Optical Aberrations
An image-forming system is complex not only because of elements such as tubes, lenses and diaphragms, but also because each element is placed there for a specific function. Magnification should not be the primary factor by which the performance of the refractor telescope is evaluated. Too many nonlinear variables such as field angle, lens quality, light gathering, corrections for the various aberrations, and losses in light transmission through the optical system are also involved in the construction of the telescope. Evidently, an astronomical telescope capable of yielding a reasonable magnified image of a bright star could not have been constructed by chance. In this light it is instructive to see how Galileo described, analyzed and resolved the adverse effects caused by the various optical aberrations while refining his telescope.

F. BÒNOLI, M. MINIATI, V. GRECO, G. MOLESINI, Telescope optics of Montanari, Cellio, Campani and Bruni at the «Museo della Specola» in Bologna
Optics of telescope makers Montanari, Cellio, Campani and Bruni housed at the «Museo della Specola» in Bologna have been tested with state-of-the art equipment. The most significant findings are reported, and insights into the early stages of development of telescope optics are given.

S. TALAS, Thermometers in the eighteenth century: J.B. Micheli du Crest's works and the cooperation with G. F. Brander
In 1741, the Geneva scientist Jacques Barthélémy Micheli du Crest proposed a thermometer that attracted much attention at that time. This paper intends to analyse how Micheli's work contributed to the standardisation of thermometers and to underline the influence of Micheli's ideas on Jean Antoine Nollet and on the so-called «Réaumur thermometers».
The Augsburg instrument-maker Georg Friederich Brander and Micheli are studied through their as of now unpublished correspondence. One of the few surviving thermometers of Micheli's design made by Brander is also examined.

P. BRENNI, 19^th Century Scientific Instrument Advertising
The first printed scientific instrument advertisings date back to the late 17^th century. Trade cards, simple catalogues, classified advertising were common in the 18^th century. However scientific instrument advertising became more sophisticated and aggressive during the 19^th century. Instrument makers published large and illustrated trade catalogues, while an increasing number of advertisements appeared in scientific treatises and journals. Furthermore, in the second half of the century universal exhibitions and specialised fairs became the ideal places for displaying industrial products in front of a large audience. At the same time, several makers organised their own showrooms, where they exhibited and demonstrated their apparatus. In this article I illustrate the various forms of instrument advertising during the 19^th century and I try to analyse their impact on the scientific instruments trade and on the development of precision industry.

A.M. LOMBARDI, The constitution of white light, a source for the new questions of quantum mechanics
These pages reconstruct a debate that was important at the turn of the twentieth century, regarding the structure of non-monochromatic radiation.
We believe that this discussion had a prevalent role in focusing some questions that were to become characteristic of quantum mechanics. In particular, it is in this context that the physical significance of normal modes - i.e. of every single component of Fourier series - is approached.

D. ARECCO, Scienze naturali e istituzioni in Liguria tra Sette e Ottocento
In the Republic of Genoa, between XVIII^th and XIX^th century, the foundation of the University was accompanied by the diffusion of the Enlightenment culture and by the creation of the early scientific academies and literary circles. The most important Ligurian scientists who lived in those years were the Englishman William Batt, Cesare Nicolò Canefri and, most of all, Domenico Viviani, who had all deep interests in medecine and natural history, chemistry and physics. Their interests in collecting nature was always performed under aristocratic patronage.

S. CASATI, Un'importante acquisizione della Biblioteca dell'Istituto e Museo di Storia della Scienza: la collezione delle tesi di medicina sostenute a Parigi dal 1798 al 1860
The Library of the Institute and Museum of the History of Science of Florence has recently enriched its special Collections with the acquisition of a set medical theses presented and defended in Paris between 1789 and 1860. This extraordinary collection, some 10,000 items, documents the development of the medical sciences in nineteenth century France and Europe.

Scientific Instrument Commission

Spectroscope Histories, Papers based on a workshop organised in collaboration with the IUHPS Scientific Instrument Commission with the support of the Hans-Jenemann Foundation, and hosted by the Deutsches Museum. Munich, 2001. Edited with an Introduction by C. BIGG and K. STAUBERMANN.

Discussioni critiche

P. PARRINI, Filosofia e scienza in Enriques

Indici (Anno XVII, 2002)

For further information, please contact:
Elena Montali: elena@imss.fi.it