Marcelo Damy De Souza Santos
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Marcelo Damy de Sousa Santos (July 14, 1914 – November 29, 2009) was a Brazilian
physicist A physicist is a scientist who specializes in the field of physics, which encompasses the interactions of matter and energy at all length and time scales in the physical universe. Physicists generally are interested in the root or ultimate cau ...
. Considered as one of the most important educators and
researcher Research is "creative and systematic work undertaken to increase the stock of knowledge". It involves the collection, organization and analysis of evidence to increase understanding of a topic, characterized by a particular attentiveness t ...
s in
physics Physics is the natural science that studies matter, its fundamental constituents, its motion and behavior through space and time, and the related entities of energy and force. "Physical science is that department of knowledge which r ...
in Brazil, along with Cesar Lattes,
José Leite Lopes José Leite Lopes (October 28, 1918 – June 12, 2006) was a Brazilian theoretical physicist who worked in the field of quantum field theory and particle physics. Life Leite Lopes began his university studies in 1935, enrolling in industrial che ...
and Mario Schenberg, Damy was born in
Campinas Campinas (, ''Plains'' or ''Meadows'') is a Brazilian municipality in São Paulo State, part of the country's Southeast Region. According to the 2020 estimate, the city's population is 1,213,792, making it the fourteenth most populous Brazilian ...
,
São Paulo São Paulo (, ; Portuguese for ' Saint Paul') is the most populous city in Brazil, and is the capital of the state of São Paulo, the most populous and wealthiest Brazilian state, located in the country's Southeast Region. Listed by the Ga ...
, in 1914, the son of Harald Egydio de Souza Santos a
photographer A photographer (the Greek φῶς (''phos''), meaning "light", and γραφή (''graphê''), meaning "drawing, writing", together meaning "drawing with light") is a person who makes photographs. Duties and types of photographers As in other ...
, and Maria Luiza Damy de Souza Santos. He did his secondary studies in the State Gymnasium (later to be called
Colégio Culto à Ciência The Colégio Culto à Ciência (Portuguese for ''"Cult to Science" High School''), denominated E.E. Culto à Ciência), is a public secondary school located in the city of Campinas, state of São Paulo, Brazil. It was founded in 1874, as a boy's ...
) and was a keen student of sciences, particularly physics and chemistry. In 1932, he was admitted to the
Polytechnic School of the University of São Paulo The Escola Politécnica of the University of São Paulo (or the Engineering School of the University of São Paulo, Portuguese: Escola Politécnica da Universidade de São Paulo) (usually called Poli, Poli-USP or EPUSP) is an engineering school a ...
to study electrical engineering, but eventually switched to physics at the invitation of Prof.
Gleb Wataghin Gleb Vassielievich Wataghin (November 3, 1899 in Birzula, Russian Empire – October 10, 1986 in Turin, Italy) was a Russian-Italian theoretical and experimental physicist and a great scientific leader who gave a great impulse to the teaching and r ...
, a Russian physicist who was teaching at the time in the university, whose classes Damy enjoyed to listen, although they were given in a different course from his. He graduated in the first class of the course of physics at USP. During his undergraduate years, Damy became interested in radioactivity. This interest started his successful lifelong career in experimental
nuclear physics Nuclear physics is the field of physics that studies atomic nuclei and their constituents and interactions, in addition to the study of other forms of nuclear matter. Nuclear physics should not be confused with atomic physics, which studies the ...
. After graduation, he went to
Cambridge University The University of Cambridge is a Public university, public collegiate university, collegiate research university in Cambridge, England. Founded in 1209 and granted a royal charter by Henry III of England, Henry III in 1231, Cambridge is the world' ...
, at 24, with a grant from the
British Council The British Council is a British organisation specialising in international cultural and educational opportunities. It works in over 100 countries: promoting a wider knowledge of the United Kingdom and the English language (and the Welsh lan ...
, under the supervision of Prof. William L. Bragg (
Nobel Prize in Physics ) , image = Nobel Prize.png , alt = A golden medallion with an embossed image of a bearded man facing left in profile. To the left of the man is the text "ALFR•" then "NOBEL", and on the right, the text (smaller) "NAT•" then " ...
). In England he became friends with Edmundo Barbosa da Silva,
Oxford University Oxford () is a city in England. It is the county town and only city of Oxfordshire. In 2020, its population was estimated at 151,584. It is north-west of London, south-east of Birmingham and north-east of Bristol. The city is home to th ...
student and future colleague in the Atomic Energy Commission of the Brazilian National Research Council. Back in Brazil, Damy worked as a research scientist for the
Brazilian Navy ) , colors= Blue and white , colors_label= Colors , march= "Cisne Branco" ( en, "White Swan") (same name as training ship ''Cisne Branco'' , mascot= , equipment= 1 multipurpose aircraft carrier7 submarines6 frigates2 corvettes4 amphibious war ...
, especially in the development of a
sonar Sonar (sound navigation and ranging or sonic navigation and ranging) is a technique that uses sound propagation (usually underwater, as in submarine navigation) to navigate, measure distances (ranging), communicate with or detect objects on o ...
, working in a laboratory on the premises of the department of physics at the USP Faculty of Philosophy, Science and Letters until the end of
World War II World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the vast majority of the world's countries—including all of the great powers—forming two opposing ...
(1945). For this important work he received the Brazilian Medal of Naval Merit. In 1945, at the invitation of the Rockefeller Foundation, Damy spent nine months at the
University of Illinois The University of Illinois Urbana-Champaign (U of I, Illinois, University of Illinois, or UIUC) is a public land-grant research university in Illinois in the twin cities of Champaign and Urbana. It is the flagship institution of the Univer ...
. where he worked with Prof.
Donald William Kerst Donald William Kerst (November 1, 1911 – August 19, 1993) was an American physicist who worked on advanced particle accelerator concepts (accelerator physics) and plasma physics. He is most notable for his development of the betatron, a novel ...
, inventor of the
betatron A betatron is a type of cyclic particle accelerator. It is essentially a transformer with a torus-shaped vacuum tube as its secondary coil. An alternating current in the primary coils accelerates electrons in the vacuum around a circular path. Th ...
. Returning once again to Brazil, Damy accepted an assistant professorship at the Department of Physics of USP, and helped install there in 1950 a betatron, the first
particle accelerator A particle accelerator is a machine that uses electromagnetic fields to propel charged particles to very high speeds and energies, and to contain them in well-defined beams. Large accelerators are used for fundamental research in particle ...
operating in
Latin America Latin America or * french: Amérique Latine, link=no * ht, Amerik Latin, link=no * pt, América Latina, link=no, name=a, sometimes referred to as LatAm is a large cultural region in the Americas where Romance languages — languages derived f ...
. He also developed and installed the first
nuclear reactor A nuclear reactor is a device used to initiate and control a fission nuclear chain reaction or nuclear fusion reactions. Nuclear reactors are used at nuclear power plants for electricity generation and in nuclear marine propulsion. Heat fr ...
in Brazil, still in working order today. Another area of research of Damy was
cosmic rays Cosmic rays are high-energy particles or clusters of particles (primarily represented by protons or atomic nuclei) that move through space at nearly the speed of light. They originate from the Sun, from outside of the Solar System in our ow ...
, particularly aimed at assessing the nature of the penetrating showers of cosmic rays. He demonstrated that these showers had atomic particles such as
meson In particle physics, a meson ( or ) is a type of hadronic subatomic particle composed of an equal number of quarks and antiquarks, usually one of each, bound together by the strong interaction. Because mesons are composed of quark subparticles, ...
s, which had a great penetrating power without losing considerably part of its
energy In physics, energy (from Ancient Greek: ἐνέργεια, ''enérgeia'', “activity”) is the quantitative property that is transferred to a body or to a physical system, recognizable in the performance of work and in the form of hea ...
. Along with Gleb Wataghin and Paulus Aulus Pompéia he found that these showers are more energetic than previously supposed. This work was published internationally.Wataghin, G., Pompeia, P. A., Santos, M. D. S. ''Phys. Rev.'' 57 (1940). Damy was one of the greatest scientific leaders in Brazil, helping to found many important research and educational institutions in his area. He was a founder of the Institute of Atomic Energy and the Institute of Research on Nuclear Energy (IPEN), and its first superintendent, from 1956 to 1961. He was also president of the National Commission of Nuclear Energy (CNEN) from 1961 to 1964. After retiring as
professor emeritus ''Emeritus'' (; female: ''emerita'') is an adjective used to designate a retired chair, professor, pastor, bishop, pope, director, president, prime minister, rabbi, emperor, or other person who has been "permitted to retain as an honorary title ...
from USP in 1968, Damy helped to consolidate the newly established
State University of Campinas The State University of Campinas ( pt, Universidade Estadual de Campinas), commonly called Unicamp, is a public research university in the state of São Paulo, Brazil. Unicamp is consistently ranked among the top universities in Brazil and Latin ...
(Unicamp) and took over as director of the
Institute of Physics The Institute of Physics (IOP) is a UK-based learned society and professional body that works to advance physics education, research and application. It was founded in 1874 and has a worldwide membership of over 20,000. The IOP is the Physic ...
, which received the name of his former professor, Gleb Wataghin. Furthermore, he worked as a professor of nuclear physics at the
Pontifical Catholic University of São Paulo The Pontifical Catholic University of São Paulo ( pt, Pontifícia Universidade Católica de São Paulo, PUC-SP), locally known as ''PUC'' or the ''Catholic University'' ('), is a private and non-profit Catholic university. It is one of the larg ...
(PUC-SP) and, since 1988, collaborated again in research work done at IPEN. He authored over 80 papers and was a member of several scientific societies in Brazil and abroad, with emphasis on the
Brazilian Academy of Sciences The Brazilian Academy of Sciences ( pt, italic=yes, Academia Brasileira de Ciências or ''ABC'') is the national academy of Brazil. It is headquartered in the city of Rio de Janeiro and was founded on May 3, 1916. Publications It publishes a lar ...
. He married Lucia Toledo de Souza Santos in 1947. Damy died on November 29, 2009, from complications of a stroke.


Quote

"A good teacher is a researcher who likes to tell the things he does and sees others doing. I do not know any good teacher who was not, or isn't yet, a researcher".


References


External links


Marcelo Damy S. Santos
Biografia e Entrevista. Notáveis da Ciência Brasileira. Canal Ciência, IBICT (in Portuguese)
Marcelo Damy de Souza Santos
Entrevista. Revista Cienc. Cult. vol.55 no.4 São Paulo Oct./Dec. 2003 (in Portuguese)

Institute of Physics Gleb Wataghin, State University of Campinas

In Portuguese.
Marcelo Damy and the Revolution in the Teaching of Physics
Estud. Avançados USP. vol.8 no.22 São Paulo Sept./Dec. 1994 (In Portuguese). The best and most complete interview about his life story. {{DEFAULTSORT:Damy, Marcelo 1914 births 2009 deaths People associated with the State University of Campinas 20th-century Brazilian physicists People from Campinas Recipients of the Great Cross of the National Order of Scientific Merit (Brazil) Members of the Brazilian Academy of Sciences