Jean Nicolas Pierre Hatchet

See also: Hatchet

Jean Nicolas Pierre Hatchet , born with Wall in the Ardennes the May 6th 1769 - died in Paris the January 16th 1834, was a French mathematician under the Directory and the First Empire. It can be regarded as the principal continuator of Gaspard Monge in geometry.
L' teaching of descriptive Geometry which it ensured in the universities and at the University, impregnated a whole generation of scientists and technicians, and prepared the rise of the projective Géométrie at the XIXe century.

Biography

Wire of a bookseller of Charleville, he studies first of all with the college of the city then to that of Rheims. In 1788, it turns over to Mézières, where it is named with the royal École of the genius of Wall as draftsman being used as assistance to the professors of physics and chemistry. In 1793, he becomes professor of Hydrographie to Collioure and Port-Vendres. It sends to Gaspard Monge, then Minister for the navy, several scientific articles, in which it treats few questions of navigation by the geometry. The influence of this last enables him to obtain an appointment with Paris. It is then called with the substitution of Claude Joseph Ferry, professor at the school of Wall and is named appointed with Convention.

Towards the end of 1794, when the Polytechnic school is established, it is named assistant of Monge in the department devoted to the descriptive Géométrie. There, it has like famous pupils Poisson, François Arago and Fresnel. Accompanying Guyton de Morveau in its forwarding, with the beginning of the year 1794, it was present at the battles of Fleurus, and entered to Brussels with the French Army. It belonged to the Expédition of Egypt.

He became then mathematics professor at the school of the pages. He accepted the science doctorate in 1809 and was named in 1810 assistant professor with the Faculty of Science of Paris and with the National university.

In 1816, with the accession of Louis XVIII, it is private of its station at the Polytechnic school. The royal assent necessary in 1823 for the election of Hatchet to the Academy of Science is not obtained, and until in 1831 will not take place, where it obtains this honor after the revolution of July 1830. He died in Paris the January 16th 1834.

Hatchet was carried estimates some for its private control, as well as for its scientific achievements and the service of the State. Its work related to mainly the descriptive geometry and its applications to “arts” and the mechanical engineering. It perpetuated the teaching of geometry of Monge, and also contributed on the whole to the development of mechanization in France following the establishment of the Polytechnic school. Its principal work is:

  • Collection of the diagrams of geometry , etc (1795 and 1817);
  • Treated elementary of the machines (1811);
  • Two Supplements with the descriptive Geometry of Monge (1811 and 1818);
  • Applications of descriptive geometry (1817);
  • Elements of solid geometry (1817);
  • Treated descriptive geometry , etc (1822);
  • Correspondence on the Polytechnic school (1804-1815).

It also published a certain number of articles in the scientific newspapers of the time. For a list of these publications, to consult off the Catalog Scientific Papers of the Royal Society off London; or: François Arago, Works (1855); and Woodland, Note on J. NR. P. Hachette (Brussels, 1836).

Source

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