Spiru Haret
Spiru Haret | |
|---|---|
| Born | Spiridon Haret 15 February 1851 |
| Died | 17 December 1912 (aged 61) |
| Resting place | Bellu Cemetery, Bucharest, Romania |
| Education | Saint Sava National College |
| Alma mater | University of Bucharest University of Paris |
| Known for | N-body problem Romanian education system |
| Spouse |
Ana Popescu (m. 1883) |
| Scientific career | |
| Fields | Mathematics, Astronomy |
| Institutions | University of Bucharest School of Bridges and Roads |
| Thesis | Sur l’invariabilité des grandes axes des orbites planétaires (1878) |
| Doctoral advisor | Victor Puiseux |
| Minister of Religious Affairs and Public Instruction | |
| In office 31 March 1897 – 30 March 1899 | |
| Prime Minister | Dimitrie Sturdza |
| Preceded by | George Mârzescu |
| Succeeded by | Take Ionescu |
| In office 14 February 1901 – 20 December 1904 | |
| Prime Minister | Dimitrie Sturdza |
| Preceded by | Constantin C. Arion |
| Succeeded by | Mihail Vlădescu |
| In office 12 March 1907 – 28 December 1910 | |
| Prime Minister | Dimitrie Sturdza Ion I. C. Brătianu |
| Preceded by | Constantin Istrati |
| Succeeded by | Constantin C. Arion |
| Interior Minister | |
| In office 13 December 1904 – 20 December 1904 | |
| Prime Minister | Dimitrie Sturdza |
| Preceded by | Vasile Lascăr |
| Succeeded by | Gheorghe Grigore Cantacuzino |
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Spiru C. Haret (Romanian pronunciation: [ˈspiru haˈret]; 15 February 1851 – 17 December 1912) was a Romanian mathematician, astronomer, and politician. He made a fundamental contribution to the n-body problem in celestial mechanics by proving that using a third degree approximation for the disturbing forces implies instability of the major axes of the orbits, and by introducing the concept of secular perturbations in relation to this.
As a politician, during his three terms as Minister of Education, Haret ran deep reforms, building the modern Romanian education system. He was made a full member of the Romanian Academy in 1892.
He also founded the Bucharest Astronomical Observatory, appointing Nicolae Coculescu as its first director. The crater Haret on the Moon is named after him.