Alessandro Serpieri

Alessandro Serpieri (b. in San Giovanni in Marignano, near Rimini, 31 Oct., 1823; d. Fiesole, 22 Feb., 1885) was an Italian scientist known for work in astronomy and seismology.

Early life

His early education was received in Rimini from the brothers Speranza, priests. His classical studies he made at the College of the Scolopians in Urbino, of which the distinguished Latin scholar, Father Angelo Bonuccelli, was the rector. He entered their novitiate in Florence, 30 Nov., 1838. From 1840-43 he studied philosophy and the exact sciences at the Ximenian College and observatory, whose rector, the astronomer and geodete, Father Giovanni Inghirami, was at the same time professor of higher mathematics. Serpieri was only twenty years old when he was appointed instructor in mathematics and philosophy at the college of Siena.

In Nov., 1846, his superior appointed him professor of philosophy and physics at the college of Urbino, while two months later the Papal Government called him also to the chair of physics in the university of the same city. On 27 Aug., 1848, he was ordained priest, and in Nov., 1857, he became rector of the college. He continued in this position and acted at the same time as professor until 1884, when the municipal authorities notified him of the impending secularization of education, both in the primary schools and in the colleges, inviting him however to remain as professor. This caused him and his colleagues to give up their positions at the college. Appointed to the rectorship of the Collegio della Badia Fiesolana, he died in the following year after a short illness.


Serpieri's chief merits as an astronomer lay in the observation of shooting stars. His first treatise on this subject dates from 1847 in the "Annali di fisica e chimica" of Maiocchi. In August, 1850, he discovered that the August meteors originate in a radiant not far removed from Gamma Persei (hence "Perseids", "Ann. di Tortolino", 1850). In the same year he established an observatory at Urbino, and thereafter published regularly in his monthly bulletin the results of his meteoric observations. These were of assistance to Schiaparelli in the formulation of his theory on the shooting stars.

Serpieri himself expressed some views on this subject in his bulletin in 1867. Urged by Father Angelo Secchi, he went to Reggio Calabria to observe the total eclipse of the sun in 1870, and to ascertain with exactness the northern limit of the zone of totality. The coronal streamers of the sun observable during the eclipse he declared to be sun auroras caused by the electrical influence of the earth and other planets on the sun (Rendic, Ist. Lomb., 1871). When Schiaparelli called his attention to the work of the American, George Jones, comprising 328 drawings of the Zodiacal light as observed at different times and from different places (published at Washington at the expense of the Government), he at once submitted it to analysis. This led him to his theory, in which he explains this phenomenon as light of the earth produced and maintained in the atmosphere by special solar radiations ("La luce zodiacale studiata nelle osserv. di. G. Jones", 138 pp. in "Mem. Soc. Spettr. Ital.", 1876-81). The asteroid "70745 Aleserpieri" was named after him.


In his study of the earthquake of 12 March, 1873, he was the first to introduce the concept of the seismic radiant. The so-called premonition on the part of animals he explained by the hypothesis of a preceding electrical disturbance. His magnum opus is his study on the earthquake of 17 and 18 March, 1875, which caused great devastation in his home city and in other places. He also wrote two memoranda on the 1883 earthquake in Casamicciola. His complete seismological studies, for which he received the gold medal at the General Italian Exposition in Turin (1884), were republished in 1889 by P. G. Giovanozzi.

Published works

*a study on the Foucault pendulum (Ann. Tortolini, 1851);
*a treatise on the simultaneous transmission of opposing electric currents in the same wire (Corr. sc. di Roma, 1855)
*a lecture on the unity of natural forces (La forza e le sue trasformazioni, 1868).
*a work on Electric potential ("Il potentziale elettrico", 171 pp., Milan, 1882)
*his last work, on absolute measures ("Le misure assolute", etc., Milan, 1884)


*GIOVANOZZI, "Della Vita e degli Scritti di Alessandro Serpieri delle Scuole Pie (Florence, 1887), 134 pp.;
*Allesandro Serpieri, D.S.P., "Scritti sismologici nuovamente raccolti e pubblicati da G. Giovanozzi, Direttore dell' Osservatorio Ximeniano" (Florence, 1888-89);
*POGGENDORFF, "Biogr. litt. Handwb.", iii, 1898, s. v.
*Catholic|Alessandro Serpieri

External links

*S. Santini, [ Montefeltro seismicity: from Serpieri's seismograph to the RSNC seismograph station] , "Annals of Geophysics", June 2000

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