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Torsion balance of Eötvös

Torsion balance of Eötvös

As part of the Night of Museums 2020 you are invited to a virtual visit to our Eötvös exhibition. On the occasion of the jubilee year of Loránd Eötvös an exhibition was opened at the ELTE University Library and Archives entitled Under the spell of accuracy. The Life and Work of Loránd Eötvös. The torsion balance, or Eötvös-pendulum as it is also called, is one of the most interesting pieces of the exhibition.

The aim of the exhibition is to explore the exciting world of physics in an experience-oriented way. With the help of interactive tools, our visitors can get acquainted with the stages of Loránd Eötvös' life, his scientific and teaching activities, his exceptional stereo photos and the torsion balance, which was awarded a gold medal at the World Exhibition and is owned by the Department of Materials’ Physics at the Institute of Physics. Discover the regularly updated Facebook page of the Eötvös Exhibition and the exhibition website.

Eötvös pendulum (horizontal variometer), 1898

The physicist, Loránd Eötvös (1848–1919) focused on gravitational research from the 1880s, and in the following decades he carried out his experiments on the mutual attraction of bodies and the observation of the force of gravity on earth. Compared to previous similar tools, Eötvös has designed and continuously developed a much more sensitive and precise tool with the help of his colleagues. With Eötvös pendulums manufactured at Nándor Süss's fine mechanics workshop (the predecessor of MOM, Hungarian Optical Works), Loránd Eötvös showed the identity of heavy and helpless masses (one of the foundations of Einstein's general theory of relativity) with unimaginable accuracy, measuring the change in Earth's gravitational field at different geographical locations. He obtained his results on the basis of data gained from field measurements. He and his team examined the areas which seemed interesting from the point of view of changes and anomalies of gravitation originating from the presence of rocks of different density under the surface.

One of the early versions of the Eötvös pendulum is the horizontal variometer, of which only two were made. The picture shows the so-called “Paris pendulum”, presented by Loránd Eötvös at the 1900 Paris World Exhibition, where he won a gold medal.

 

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Anonymous
vodkát akarok!!!!! :D
2019.02.08. 13:01
Vodkát nem tartunk a könyvtárban, de például az Egyetemi Könyvtár közelében számos vendéglátóhely található. :)
Anonymous
Tisztelt Könyvtár Szolgálat! A SciFinder adatbázis elérésével kapcsolatban érdeklődöm. Egyetemi hálózatról próbáltam belépni, a bejelentkezéshez caesar azonosítót és jelszót megadva, de nem működött. Hogy tudnám a legegyszerűbben elérni az adatbázist?
2019.03.22. 14:39
Köszönjük az üzenetet! Kollégáink igyekszenek minél hamarabb elhárítani a problémát, 1-2 nap türelmet kérünk.
Anonymous
???
2019.04.16. 13:51
Anonymous
Látogatójeggyel is van lehetőség az Arcanum Digitális Tudománytáron megnézni a digitalizált folyóiratokat?
2019.04.17. 11:45
Kedves Érdeklődő! Igen, gépeinken szabad a hozzáférés az Arcanum adatbázisaihoz.
Anonymous
Is it free to use the library space and wifi for general public?
2019.06.13. 10:34
Yes, you can use our library and the services free with a visitor's pass which you can get to information desk on ground floor.
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