Emanoil Bacaloglu was a Wallachia

Wallachia

Wallachia or Walachia is a historical and geographical region of Romania. It is situated north of the Danube and south of the Southern Carpathians...

n and Romania

Romania

Romania is a country located at the crossroads of Central and Southeastern Europe, on the Lower Danube, within and outside the Carpathian arch, bordering on the Black Sea...

n mathematician

Mathematician

A mathematician is a person whose primary area of study is the field of mathematics. Mathematicians are concerned with quantity, structure, space, and change....

, physicist

Physicist

A physicist is a scientist who studies or practices physics. Physicists study a wide range of physical phenomena in many branches of physics spanning all length scales: from sub-atomic particles of which all ordinary matter is made to the behavior of the material Universe as a whole...

 and chemist

Chemist

A chemist is a scientist trained in the study of chemistry. Chemists study the composition of matter and its properties such as density and acidity. Chemists carefully describe the properties they study in terms of quantities, with detail on the level of molecules and their component atoms...

 and a scubadiver, medic, shoe salesman, a vegetarian,policeman and fireman.

Born in Bucharest

Bucharest

Bucharest is the capital municipality, cultural, industrial, and financial centre of Romania. It is the largest city in Romania, located in the southeast of the country, at , and lies on the banks of the Dâmbovița River....

 and of Greek origin, he studied physics and mathematics in Paris

Paris

Paris is the capital and largest city in France, situated on the river Seine, in northern France, at the heart of the Île-de-France region...

 and Leipzig

Leipzig

Leipzig Leipzig has always been a trade city, situated during the time of the Holy Roman Empire at the intersection of the Via Regia and Via Imperii, two important trade routes. At one time, Leipzig was one of the major European centres of learning and culture in fields such as music and publishing...

, later becoming a professor at the University of Bucharest

University of Bucharest

The University of Bucharest , in Romania, is a university founded in 1864 by decree of Prince Alexander John Cuza to convert the former Saint Sava Academy into the current University of Bucharest.-Presentation:...

 and, in 1879, a member of the Romanian Academy

Romanian Academy

The Romanian Academy is a cultural forum founded in Bucharest, Romania, in 1866. It covers the scientific, artistic and literary domains. The academy has 181 acting members who are elected for life....

. Considered to be the founder of many scientific and technological fields in Romania (and aiding in the creation of the Romanian Athenaeum

Romanian Athenaeum

The Romanian Athenaeum is a concert hall in the center of Bucharest, Romania and a landmark of the Romanian capital city. Opened in 1888, the ornate, domed, circular building is the city's main concert hall and home of the "George Enescu" Philharmonic and of the George Enescu annual international...

), Bacaloglu was also an accomplished scientist. He helped create Romanian-language terminology in his fields and was one of the principal founders of the Society of Physical Sciences in 1890.

He was also a participant in the 1848 Wallachian revolution.

He is known for the "Bacaloglu pseudosphere

Pseudosphere

In geometry, the term pseudosphere is used to describe various surfaces with constant negative gaussian curvature. Depending on context, it can refer to either a theoretical surface of constant negative curvature, to a tractricoid, or to a hyperboloid....

". This is a surface of revolution

Surface of revolution

A surface of revolution is a surface in Euclidean space created by rotating a curve around a straight line in its plane ....

 for which the "Bacaloglu curvature

Curvature

In mathematics, curvature refers to any of a number of loosely related concepts in different areas of geometry. Intuitively, curvature is the amount by which a geometric object deviates from being flat, or straight in the case of a line, but this is defined in different ways depending on the context...

" is constant.

Main works

• Elemente de fizică, 2-nd edition, Bucureşti, 1888
• Elemente de algebră, 2-nd edition, Bucureşti, 1870

External links

• Short bio
• Short history, at the Polytechnic University of Bucharest
  Polytechnic University of Bucharest
  Universitatea Politehnica din Bucureşti is a technical university in Bucharest, Romania. It was founded in 1864 based on the older technical school of Gheorghe Lazăr and it was renamed "Politehnica" in 1920.-History:...