Gnomonica n° 1 - Nicola Severino
Gnomonica n° 1 - Nicola Severino
Gnomonica n° 1 - Nicola Severino
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<strong>Gnomonica</strong>, Storia, Arte e Tecniche degli Orologi Solari N° 1 Settembre 1998<br />
English Summary<br />
Pag. 3<br />
a cura di Riccardo Anselmi<br />
MYTHOLOGY AND TIME TELLING OF ANCIENT SUNDIALS<br />
Forlati's brief article gives us an impressive mythological legend which refers to the sundial's equation of time.<br />
THE CHRONICLE OF FERMO'S SUNDIALS<br />
In the last century chronicles Alberto Cintio found interesting evidence that the sundial was able to replace or even<br />
to set the time on the clock tower.<br />
THE DIAL OF ACAZ, A 1547 REFRACTION SUNDIAL OF GEORGE HARTMANN<br />
Lino Colombo describes a particular sundial in the shape of a chalice that only works when the refraction of the<br />
sunbeams' shadow is projected into the chalice by the gnomon. This watch, well known during the Renaissance,<br />
was constructed by George Hartmann in 1547 and is problably one of the eldest of its type. It was found by a keen<br />
antique dealer in a small market in the Northern part of Italy.<br />
THE CONSTRUCTION OF THE SUNDIAL FOR THE QUINZANELLO'S PRIMARY SCHOOL<br />
Giacomo Agnelli recalls one of his numerous didactic experiences concerning the costruction of a analemmatic<br />
dial by the pupils of the Quinzanello's (Brescia) primary school.<br />
THE RESTORATION OF CLEMENTINE'S SUNDIAL AT ST.MARY OF ANGELS CHURCH (ROME)<br />
One of the most important gnomonic projects of the period must be the adoption of the Clementine meridian line,<br />
constructed by Bianchini in the 18th century at St.Mary of Angels church in Rome. A school in Rome was able to<br />
obtain the monument with the proposal to undertake the restoration and conservation of Clementine's sundial<br />
which is falling into decay.<br />
THE SUNDIAL OF THE BASILICA OF ST.NICCOLO' ALL'ARENA IN CATANIA<br />
Michele Trobia took care of the restoration of the sundial in the Basilica of St.Niccolo' all'Arena in Catania. This<br />
sundial is one of the two dials (meridian line) constructed by the danish astronomer Peters. The whole restoration<br />
is briefly described in this article, hoping to be able to give a further detailed account of it in future editions.<br />
THE HISTORY OF THE BIBLIOGRAPHY OF GNOMONICA<br />
<strong>Nicola</strong> <strong>Severino</strong> summarizes the various editions of the Bibliography of <strong>Gnomonica</strong>. Started in 1992, with the<br />
contribution of the great Charles k.Aked, today with almost 12.000 titles it has become the world's biggest<br />
International Bibliography of <strong>Gnomonica</strong>.<br />
TRIBUTE TO CHARLES K.AKED<br />
<strong>Nicola</strong> <strong>Severino</strong> recalls the short but intense work experience he had in 1996 with Aked, recently deceased, and<br />
the scientific and moral tuition this great gnomonist has left us.<br />
THE TORREMAGGIORE SUNDIAL: A SOLVED ENIGMA?<br />
In Torremaggiore (Puglia), there is a small sundial found by Francesco Azzarita, with strange marks. The author,<br />
encouraged by the Azzarita's first report presented at the last Seminar of <strong>Gnomonica</strong> in 1997, tries to solve this<br />
misterious enigma.<br />
PARTICULAR APPLICATION ON MATHEMATICAL ANALYSIS TO THE FORMULAS OF<br />
SHADE'S LENGHTS