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Loránd Eötvös

 
Loránd Eötvös

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Loránd Eötvös



 
 
Baron Loránd von Eötvös (Hungarian
Hungarian language

Hungarian is a Uralic languages unrelated to most other languages in Europe. It is mainly spoken in Hungary and by the Hungarian minorities in the seven neighbouring countries....
 Vásárosnaményi Báró Eötvös Loránd or Loránd Eötvös, ; July 27, 1848 - April 8, 1919), more commonly called Baron Roland von Eötvös in the English literature, was a Hungarian
Hungary

Hungary , officially in English the Republic of Hungary , is a landlocked country in the Carpathian Basin of Central Europe, bordered by Austria, Slovakia, Ukraine, Romania, Serbia, Croatia, and Slovenia....
 physicist
Physicist

A physicist is a scientist who studies or practices physics. Physicists study a wide range of physical phenomena in many Physics#Major fields of physics spanning all length scales: from atom particles of which all ordinary matter is made to the behavior of the material Universe as a whole ....
. Born in 1848, the year of the Hungarian revolution, he was the son of a well-known poet, writer, and liberal politician, who was cabinet minister at the time, and played an important part in 19th century Hungarian intellectual and political life.

Loránd Eötvös first studied law, but soon switched over to physics and went abroad to study in Heidelberg and Königsberg.






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Baron Loránd von Eötvös (Hungarian
Hungarian language

Hungarian is a Uralic languages unrelated to most other languages in Europe. It is mainly spoken in Hungary and by the Hungarian minorities in the seven neighbouring countries....
 Vásárosnaményi Báró Eötvös Loránd or Loránd Eötvös, ; July 27, 1848 - April 8, 1919), more commonly called Baron Roland von Eötvös in the English literature, was a Hungarian
Hungary

Hungary , officially in English the Republic of Hungary , is a landlocked country in the Carpathian Basin of Central Europe, bordered by Austria, Slovakia, Ukraine, Romania, Serbia, Croatia, and Slovenia....
 physicist
Physicist

A physicist is a scientist who studies or practices physics. Physicists study a wide range of physical phenomena in many Physics#Major fields of physics spanning all length scales: from atom particles of which all ordinary matter is made to the behavior of the material Universe as a whole ....
. Born in 1848, the year of the Hungarian revolution, he was the son of a well-known poet, writer, and liberal politician, who was cabinet minister at the time, and played an important part in 19th century Hungarian intellectual and political life.

Loránd Eötvös first studied law, but soon switched over to physics and went abroad to study in Heidelberg and Königsberg. After his doctorate he became a university professor in Budapest and played a leading part in Hungarian science for almost half a century. He gained international recognition first by his innovative work on capillarity, then by his refined experimental methods and extensive field studies in gravity. He died in 1919, but his last and probably most important paper, written together with his colleagues D. Pekár and J. Fekete, was published only in 1922.

Eötvös is remembered today for his experimental work on gravity, in particular his study of the equivalence of gravitational and inertial mass
Mass

In physical science, mass refers to the degree of acceleration a body acquires when subject to a force: bodies with greater mass are accelerated less by the same force....
 (the so-called weak equivalence principle) and his study of the gravitational gradient on the Earth's surface.

The weak equivalence principle plays a prominent role in relativity theory and the Eötvös experiment
Eötvös experiment

The E?tv?s experiment was a famous physics experiment that measured the correlation between inertial mass and gravitational mass, demonstrating that the two were one and the same, something that had long been suspected but never demonstrated with the same accuracy....
 was cited by Albert Einstein
Albert Einstein

Albert Einstein was a Germany-born theoretical physics. He is best known for his theory of relativity and specifically mass?energy equivalence, expressed by the equation E = mc2....
 in his 1916 paper The Foundation of the General Theory of Relativity.

Measurements of the gravitational gradient are important in applied geophysics
Geophysics

Geophysics, a major discipline of the Earth sciences, is the study of the Earth by the quantitative observation of its physical properties, especially by Seismology, Electromagnetism, Radioactive decay, galvanic and potential field methods....
, such as the location of petroleum
Petroleum

Petroleum or crude oil is a naturally occurring, flammable liquid found in rock formations in the Earth consisting of a complex mixture of hydrocarbons of various molecular weights, plus other organic compounds....
 deposits. The CGS unit for gravitational gradient is named the eotvos
Eotvos (unit)

The eotvos is a unit of acceleration divided by distance that was used in conjunction with the older centimeter-gram-second system of units. The eotvos is defined as 1/1,000,000,000 Gal per centimetre....
 in his honor.

From 1886 until his death, Loránd Eötvös researched and taught in the University of Budapest, which in 1950 was renamed after him (Eötvös Loránd University).

See also

  • eotvos
    Eotvos (unit)

    The eotvos is a unit of acceleration divided by distance that was used in conjunction with the older centimeter-gram-second system of units. The eotvos is defined as 1/1,000,000,000 Gal per centimetre....
    , a unit of gravitational gradient
  • Eötvös experiment
    Eötvös experiment

    The E?tv?s experiment was a famous physics experiment that measured the correlation between inertial mass and gravitational mass, demonstrating that the two were one and the same, something that had long been suspected but never demonstrated with the same accuracy....
  • Eötvös effect
    Eötvös effect

    In the early 1900s a German team from the Institute of Geodesy in Potsdam carried out gravity measurements on moving ships in the Atlantic, Indian and Pacific Oceans....
    , a concept in geodesy
    Geodesy

    Geodesy , also called geodetics, a branch of earth sciences, is the scientific discipline that deals with the measurement and representation of the Earth, including its gravitational field, in a three-dimensional time-varying space....
  • Eötvös number
    Eötvös number

    In fluid dynamics the E?tv?s number is a dimensionless number named after Hungarian physicist Lor?nd E?tv?s .Together with Morton number it can be used to characterize the shape of bubbles or drops moving in a surrounding fluid....
    , a concept in fluid dynamics
    Fluid dynamics

    In physics, fluid dynamics is the sub-discipline of fluid mechanics dealing with fluid flow — the natural science of fluids in motion....
  • Eötvös (crater)
    Eötvös (crater)

    E?tv?s is the remains of a Moon Impact crater on the Far side of the Moon. It lies to the north-northwest of the walled plain Roche , and east-southeast of the equally ruined Bolyai ....
     on the moon
  • Eötvös rule
    Eötvös rule

    The E?tv?s rule, named after the Hungarian physicist Lor?nd E?tv?s enables the prediction of the surface tension of an arbitrary liquid pure substance at all temperatures....
     for predicting surface tension
    Surface tension

    Surface tension is an attractive property of the surface of a liquid. It is what causes the surface portion of liquid to be attracted to another surface, such as that of another portion of liquid ....
     dependent on temperature


External links

  • (biographical remarks and a summary of his research)
  • (a technical review of his research)