Baron Roland Eötvös (in Hungarian: Báró Eötvös Loránd) as a scientist is known from
1) the Eötvös rule in capillarity, which has of equal importance as the universal
gas laws;
2) from the Eötvös balance, by means of which he demonstrated the equivalence of gravitational
and inertial masses, with a precision of 10-9;
3) from the field version of his balance, which was the first geophysical field instrument.
As a Public Man, he was founder and leader of scientific and sport organizations,
a supporter of young talents, a sportsman, among others a mountaineer. In the Dolomites
the Eötvös peak
is named after him. He captured the landscape by his stereo camera. His photos were
digitized on the occasion of the Eötvös 100 Commemorative Year, in two steps: (a)
the already known photos in January 2019, (b) photos newly found in the Hungarian
Museum of Science, Technology and Transport, in 2020. Recognizing the environmental
significance of these documents, on the occasion of the 175th anniversary of his birth,
we present several threedimensional photos from this South Tyrol collection, as a
part the complete oeuvre of one of the greatest pre-IUGG geoscientists, Baron Roland
Eötvös. More photos (and an original Eötvös balance) can be seen in the booth of Institute
of Earth Physics and Space Science (Sopron, Hungary), with the financial support of
the Eötvös Loránd Research Network.
