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 caus ...
.
Considered as one of the most important
educator
A teacher, also called a schoolteacher or formally an educator, is a person who helps students to acquire knowledge, competence, or virtue, via the practice of teaching.
''Informally'' the role of teacher may be taken on by anyone (e.g. whe ...
s and
researchers 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 Cesar, César or Cèsar may refer to:
Arts, entertainment, and media
* ''César'' (film), a 1936 film directed by Marcel Pagnol
* ''César'' (play), a play by Marcel Pagnolt
* César Award, a French film award
Places
* Cesar, Portugal
* C ...
,
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 chem ...
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 GaWC a ...
, in 1914, the son of Harald Egydio de Souza Santos a
photographer
A photographer (the Greek language, 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 photographe ...
, 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
Chemistry is the science, scientific study of the properties and behavior of matter. It is a natural science that covers the Chemical element, elements that make up matter to the chemical compound, compounds made of atoms, molecules and ions ...
.
In 1932, he was admitted to the
Polytechnic School of the University of São Paulo to study
electrical engineering
Electrical engineering is an engineering discipline concerned with the study, design, and application of equipment, devices, and systems which use electricity, electronics, and electromagnetism. It emerged as an identifiable occupation in the l ...
, but eventually switched to physics at the invitation of Prof.
Gleb Wataghin, 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
, mottoeng = Literal: From here, light and sacred draughts.
Non literal: From this place, we gain enlightenment and precious knowledge.
, established =
, other_name = The Chancellor, Masters and Schola ...
, at 24, with a grant from the
British Council, under the supervision of Prof.
William L. Bragg
Sir William Lawrence Bragg, (31 March 1890 – 1 July 1971) was an Australian-born British physicist and X-ray crystallography, X-ray crystallographer, discoverer (1912) of Bragg's law, Bragg's law of X-ray diffraction, which is basic for t ...
(
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 Edmundo is a common name that is used by many individuals including:
* Edmundo Alves de Souza Neto, former Brazilian football player
* Edmundo Farolan, Filipino writer
* Edmundo Ros, Trinidadian musician
* Edmundo Rivero, Argentine singer
* Edmundo ...
,
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 the ...
student and future colleague in the Atomic Energy Commission of the
Brazilian National Research Council
The Brazilian National Council for Scientific and Technological Development (CNPq, pt, Conselho Nacional de Desenvolvimento Científico e Tecnológico, earlier ) is an organization of the Brazilian federal government under the Ministry of Scienc ...
. 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 warf ...
, 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 navigation, navigate, measure distances (ranging), communicate with or detect 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 opposin ...
(1945). For this important work he received the
Brazilian Medal of Naval Merit
Brazilian commonly refers to:
* Something of, from or relating to Brazil
* Brazilian Portuguese, the dialect of the Portuguese language used mostly in Brazil
* Brazilians, the people (citizens) of Brazil, or of Brazilian descent
Brazilian may als ...
.
In 1945, at the invitation of the
Rockefeller Foundation
The Rockefeller Foundation is an American private foundation and philanthropic medical research and arts funding organization based at 420 Fifth Avenue, New York City. The second-oldest major philanthropic institution in America, after the Carneg ...
, 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 University ...
. 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. 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 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 from nu ...
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 own ...
, particularly aimed at assessing the nature of the
penetrating showers of cosmic rays. He demonstrated that these showers had atomic particles such as
mesons, 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 heat a ...
. 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
An institute is an organisational body created for a certain purpose. They are often research organisations (research institutes) created to do research on specific topics, or can also be a professional body.
In some countries, institutes can ...
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 (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 Physica ...
, 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 (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.
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