A German-Brazilian biophysicist of the 20th century, Hertha Meyer was a pioneer in electron microscopy applied to cell biology. She worked at the Instituto de Biofísica at the Federal University of Rio de Janeiro, contributing to the development of biophysics in Brazil.
Hertha Meyer
Hertha Meyer
8 min read
Frequently asked questions
Key Facts
- Born in 1910 in Europe, she emigrated to Brazil where she built her scientific career
- She worked at the Instituto de Biofísica at the Federal University of Rio de Janeiro (UFRJ)
- She contributed to the development of electron microscopy as a tool for biological analysis
- She played a role in the growth of biophysics in South America in the mid-20th century
- Her work was part of the international movement to establish modern biology as a structured discipline
Works & Achievements
Hertha Meyer contributed to the electron microscopy study of pathogenic protozoa found in Brazil, revealing for the first time the fine subcellular organization of tropical parasitic organisms that had previously received little scientific attention.
Her research on the ultrastructure of cell membranes contributed to understanding their molecular organization, a central question in the biophysics of the era, at a time when the lipid bilayer model was still being debated.
She contributed to the adaptation and improvement of fixation, embedding, and staining techniques for biological samples in electron microscopy, making them applicable to organisms from Brazil's tropical biodiversity.
Through her teaching and mentorship at the Instituto de Biofísica, Hertha Meyer trained several generations of Brazilian researchers, passing on the knowledge and skills of biological electron microscopy and making a lasting contribution to the growth of biophysics in Latin America.
Anecdotes
Hertha Meyer was among those European scientists who, fleeing the rise of Nazism in Germany during the 1930s and 1940s, found refuge in Latin America. Her arrival in Brazil allowed her to continue her research thanks to the warm welcome of Carlos Chagas Filho, founder of the Instituto de Biofísica, who was actively seeking to attract European minds in order to build a Brazilian science of world-class standing.
A pioneer of electron microscopy applied to biology in Brazil, Hertha Meyer faced a considerable challenge: adapting sample preparation protocols, developed in Europe for temperate organisms, to the little-studied tropical organisms surrounding her in Rio de Janeiro. This adaptation demanded constant inventiveness and exceptional technical mastery, often under precarious laboratory conditions.
Within the Instituto de Biofísica, Hertha Meyer played a decisive role in training the first generation of Brazilian biophysicists. Her methodological rigor and command of cutting-edge European techniques made her a reference figure for young researchers eager to explore, for the very first time, the subcellular structure of living organisms using an electron beam.
Hertha Meyer's research into the fine structure of biological cells was part of a global scientific movement that would transform biology. At the very time when George Palade, Albert Claude, and Christian de Duve were revealing the existence of cellular organelles in Europe and the United States, Hertha Meyer was contributing from Rio de Janeiro to laying the foundations of an autonomous South American biophysics, capable of producing original knowledge about tropical biodiversity.
Primary Sources
The journal of the Brazilian Academy of Sciences regularly published research from scientists at the Instituto de Biofísica, documenting advances in electron microscopy applied to cell biology and tropical protozoa.
This international journal specializing in cellular ultrastructure published work from the Brazilian school of biophysics during the 1950s, contributing to the international visibility of the Instituto de Biofísica.
The institute's internal reports recorded the biological sample preparation protocols for electron microscopy developed or adapted by its researchers, including Hertha Meyer, drawing on European techniques.
Doctoral theses supervised at the Instituto de Biofísica between the 1950s and 1970s bear witness to the formative role of émigré European researchers, who passed on their methods to successive generations of Brazilian biologists and biophysicists.
Key Places
Hertha Meyer's primary workplace, this institute founded by Carlos Chagas Filho in 1945 became one of the most important biophysics centers in Latin America, welcoming émigré European researchers and training the first generations of Brazilian scientists in cutting-edge electron microscopy techniques.
The city that welcomed Hertha Meyer and where she built her entire scientific career in Brazil. The country's cultural and scientific capital in the 20th century, Rio de Janeiro offered a stimulating intellectual environment at the crossroads of European influences and Brazilian vitality.
The country where Hertha Meyer received her initial scientific training, within the rigorous tradition of early 20th-century German universities. The political events of the 1930s forced her to leave and continue her work in exile.
The site of the main campus of the Federal University of Rio de Janeiro, built from the 1950s onwards on an artificial island in Guanabara Bay. The Instituto de Biofísica was relocated there and continued to thrive as a regional research center.
Typical Objects
The central instrument of Hertha Meyer's work, the transmission electron microscope used a beam of electrons to image cellular structures at a resolution thousands of times greater than that of a light microscope. Installing and mastering it in Rio de Janeiro represented a considerable technological and financial challenge for the time.
A device used to cut biological samples into ultra-thin slices (50 to 100 nanometers thick) for observation under the electron microscope. Preparing these sections required extreme dexterity and concentration, and was a key skill in Hertha Meyer's laboratory.
A toxic chemical reagent used to fix and stain biological samples for electron microscopy. By making cell membranes opaque to electrons, it allowed them to be visualized with great clarity, but its handling required strict precautions.
A polymer substance in which biological tissues were embedded before being cut with the ultramicrotome. It hardened the samples and made it possible to obtain sections thin enough to be penetrated by the electron beam.
Small metal grids a few millimeters in diameter onto which ultra-thin tissue sections were placed. They served as the universal support for any preparation intended for the electron microscope in the laboratory.
A fundamental tool of scientific rigor, the laboratory notebook allowed Hertha Meyer to meticulously record her experimental protocols, observation conditions, and results, ensuring the reproducibility of her work and the transmission of expertise to her students.
School Curriculum
Vocabulary & Tags
Key Vocabulary
Tags
Daily Life
Morning
Hertha Meyer began her day early in the laboratory of the Instituto de Biofísica, preparing biological samples that needed to be fixed with osmium tetroxide, dehydrated through successive alcohol baths, and embedded in resin before being sectioned with an ultramicrotome. These meticulous preparations could take several consecutive hours and demanded extraordinary precision and patience.
Afternoon
Afternoons were often devoted to observation sessions at the electron microscope, which required intense concentration in the partial darkness of the instrument room. She carefully annotated each micrograph obtained and discussed her results with students and colleagues, guiding their research and passing on her expertise with the exacting standards characteristic of the German scientific tradition.
Evening
Evenings were sometimes dedicated to reading the latest international scientific publications — American and European journals of biophysics and cell biology — or to writing articles. Rio de Janeiro's cultural and social life also offered moments of relaxation: concerts, walks along the seafront, dinners with colleagues at restaurants in the university districts.
Food
Living in Rio de Janeiro, Hertha Meyer had access to the rich everyday Brazilian cuisine: rice, black beans, grilled meats, fresh fish, and an abundance of tropical fruits (mango, papaya, pineapple) unknown in Europe. Strong coffee (*cafezinho*) served several times a day in laboratories and offices set the rhythm of Brazilian university life.
Clothing
In the laboratory, she wore a white researcher's coat, mandatory when working with the hazardous chemical reagents used in electron microscopy. Outside the laboratory, Brazilian women's fashion of the 1950s–1960s was characterized by light dresses with a fitted waist, suited to the heat and tropical humidity of Rio de Janeiro.
Housing
Hertha Meyer most likely lived in a neighborhood close to the university, in an apartment typical of the Brazilian intellectual bourgeoisie of the era — dwellings with high ceilings, wooden shutters to filter the tropical light, and the colorful tiled floors characteristic of mid-twentieth-century Brazilian architecture.
Historical Timeline
Period Vocabulary
Visual Style
L'esthétique d'un laboratoire scientifique brésilien des années 1950–1960, mêlant lumière tropicale chaleureuse, architecture universitaire moderniste et équipements de pointe aux tons métalliques froids.
Sound Ambience
L'atmosphère sonore d'un laboratoire de biophysique des années 1950–1960 à Rio de Janeiro, mêlant le bourdonnement feutré des appareils électroniques de pointe et les sons tropicaux de la ville filtrant par les persiennes ouvertes.
Liens externes & ressources
Références
Œuvres
Études ultrastructurales de protozoaires tropicaux
Années 1950–1960
Travaux sur la structure des membranes biologiques
Années 1950–1960
Développement de protocoles de préparation d'échantillons biologiques tropicaux
Années 1950–1960
Formation de la communauté brésilienne de microscopie électronique
Années 1950–1970
