'Si te omnimoda delectat precisio': early astronomical instruments with scales and the multiple meanings of precision in the sixteenth century.

This paper explores the various meanings of precision during the early modern period in Europe. In contrast with existing literature focused on assessing the precision of early instruments, this study delves into the intended significance of the term 'precision' as understood by historical figures such as J. Stöffler, P. Nunes or F. Mordente. By analysing a selection of instruments equipped with scales, both in their physical form and as they are described in instrument texts, several facets of precision emerge. Some findings demonstrate that the precision of scales can be enhanced through corrections obtained from tables. In other cases, visual estimation is substituted with a method for obtaining values of multiple sexagesimal places. Furthermore, certain instruments designed to represent theoretical concepts achieve greater precision by incorporating the most intricate details of these notions. This investigation into lesser-known meanings of precision underscores the need of comprehensively exploring the concepts, the practices and the terminology surrounding precision that were in use over the fifteenth and sixteenth centuries.

Time troubles: clocks and practices of precision in early eighteenth-century observatories.

In 1736/37, Joseph-Nicolas Delisle and Jean Jacques Dortous de Mairan communicated about the clocks that would enable the astronomers of the Saint Petersburg observatory to make highly exact observations. Delisle, who was in charge of the Saint Petersburg observatory, demanded old-fashioned clocks in the manner of Huygens. Mairan, well-versed in astronomy himself, recommended equation clocks. The article uses these seemingly inappropriate preferences to discuss eighteenth-century notions of accuracy and precision in clocks. It analyses the multiple factors that influenced expectations regarding the performance of timekeeping instruments, and draws attention to handling and monitoring practices. The latter reflected the individual user's purposes and experience, but also affected the clocks' going. Furthermore, the article presents the result of a statistical analysis, which serves to evaluate the historical performance of the Saint Petersburg observatory clocks and provides a foil against which Delisle's judgement of them is examined.

[Advancing Space Medicine and Astronomy in Chile for Health on Earth]. / Medicina Espacial y Astronomía en Chile: Futuro esplendor.

The sky of Chile has the ideal conditions for astronomy worldwide, which has led to crucial scientific development for the country in this and other areas. In the coming years, several space missions will occur, the crew members' health being essential for their success. Space medicine studies the changes in human physiology in space, which is entirely altered. It is essential to understand the pathology in the space environment to develop countermeasures to mitigate the different risks, one of the main ones being space radiation, among others. The development of this area of medicine will allow new advances in health on Earth.

Opportunity to view the starry night sky is linked to human emotion and behavioral interest in astronomy.

Prior to the modern era, the stars in the night sky were readily visible across the globe, but light pollution has created disparities in the opportunity to see these astronomical objects with the naked eye. This alteration may measurably impact human behavior. We hypothesize that light pollution is related to the development of people's interest in astronomy, which often serves as a "gateway" to science more broadly. In a state-by-state analysis, we used location information to examine astronomy interest data for millions of US residents. Results show that, among populations with low light pollution, a feeling of "wonder about the universe" is prevalent (r = 0.50). We found that this human emotion mediates the association between low light pollution and behavioral interest in astronomy. Although the effects of light pollution on astronomy, biology, ecology, and health are well-known, the present work demonstrates that light pollution is also relevant to human scientific behavior, with broad implications for science education and society.

Medicina Espacial y Astronomía en Chile: Futuro esplendor / Advancing Space Medicine and Astronomy in Chile for Health on Earth

El cielo de Chile cuenta con las condiciones ideales para la astronomía a nivel mundial, lo que ha conllevado un desarrollo científico importante para el país en esta y otras áreas. En los próximos años varias misiones espaciales sucederán, siendo de importancia para su éxito la salud de los tripulantes. La medicina espacial se preocupa y estudia los cambios en la fisiología humana en el espacio, la que se ve alterada en su totalidad. Es fundamental el entendimiento de la patología en el ambiente espacial para el desarrollo de contramedidas para mitigar los diferentes riesgos, siendo uno de los principales la radiación espacial entre otros. El desarrollo de esta área de la medicina permitirá nuevos avances en la salud en la Tierra.

The sky of Chile has the ideal conditions for astronomy worldwide, which has led to crucial scientific development for the country in this and other areas. In the coming years, several space missions will occur, the crew members' health being essential for their success. Space medicine studies the changes in human physiology in space, which is entirely altered. It is essential to understand the pathology in the space environment to develop countermeasures to mitigate the different risks, one of the main ones being space radiation, among others. The development of this area of medicine will allow new advances in health on Earth.

Conocimiento y poder: el papel de la astronomía en la expansión territorial de Chile, 1883-1890 / Knowledge and power: the role of astronomy in the territorial expansion of Chile, 1883-1890

Resumen El artículo analiza el rol que jugó el Observatorio Astronómico Nacional en la expansión territorial de Chile a fines del siglo XIX, a través de la relación que sostuvo con tres exploraciones geográficas asociadas a este proceso. Se propone que el Observatorio cumplió un papel central para estas exploraciones geográficas, ayudando a obtener coordenadas geográficas precisas en pos de producir mapas exactos de los territorios anexados al norte y sur de Chile. Los resultados permiten afirmar que el Observatorio Astronómico Nacional fue una institución que prestó servicios estratégicos durante la expansión territorial y, a su vez, que la geografía fue parte importante de sus trabajos científicos institucionales.

Abstract The article analyzes the role played by the National Astronomical Observatory (Observatorio Astronómico Nacional) in the territorial expansion of Chile at the end of the nineteenth century, through the relationship with three geographical explorations associated with this process. It is proposed that the Observatory played a central role in these geographic explorations, helping to obtain precise geographic coordinates to produce accurate maps of the territories annexed to the north and south of Chile. The results allow us to affirm that the National Astronomical Observatory provided strategic services during territorial expansion, and geography was an important part of its institutional scientific work.

História e memória de vidro: as fotografias brasileiras do eclipse de 1919 em Sobral / History and memory on glass: the Brazilian photographs of the 1919 eclipse in Sobral

Resumo O objetivo do artigo é divulgar as fotografias astronômicas feitas pela expedição brasileira enviada a Sobral para registrar o eclipse total do Sol de 29 de maio de 1919. Uma rica coleção de fotografias, na maioria inéditas, disponíveis em suporte de placas de vidro, encontra-se na Biblioteca do Observatório Nacional. A fotografia ocupou lugar central na astronomia do século XX. O eclipse de Sobral ganhou repercussão mundial devido à comprovação da teoria da relatividade geral pelas expedições inglesas. Neste texto ressaltamos a participação dos astrônomos do Observatório Nacional no evento, pois foram os primeiros brasileiros a ter sucesso na obtenção de fotografias da coroa solar.

Abstract The objective of this article is to disseminate the astronomical photographs taken by the Brazilian expedition sent to Sobral (state of Ceará) to record the total eclipse of the Sun on May 29, 1919. There is a rich collection of photographs, most unpublished, available on glass plates stored in the Library of the Observatório Nacional. Photography was central to astronomy in the twentieth century. Thus, while the eclipse in Sobral had worldwide repercussions due to the proof of the theory of general relativity by the English expeditions, in this article we highlight the participation of astronomers from the Observatório Nacional at the same event, since they were the first Brazilians to successfully obtain photographs of the Sun's corona.

Cielos australes, tormentas sociales y pestilencias: astronomía y meteorología en el debate parlamentario argentino, 1869-1872 / Southern skies, social storms and pestilences: astronomy and meteorology in Argentine parliamentary debates,1869-1872

Resumen Entre 1869 y 1872 se debatieron los proyectos de creación del Observatorio Nacional Argentino y de la Oficina Meteorológica Argentina. Las propuestas de financiamiento de nuevas instituciones nacionales, así como su articulación con las políticas públicas, estaban atravesadas por conflictos propios de la etapa de construcción del Estado. Oponiéndose a los proyectos elevados al Congreso Nacional, algunos sectores argumentaban recursos escasos. El presidente, Domingo Sarmiento, los acusaba de ser aliados de un gobierno anterior, considerado como "bárbaro". No obstante, mostraremos que quienes defendían los proyectos, consideraban también inadmisible un gasto elevado, remarcaban que era poco y lograban su aprobación articulando el discurso con políticas entonces en curso que apuntaban a otras inquietudes como la educación, la inmigración y las epidemias.

Abstract From 1869 to 1872, there was debate about bills to create the Observatorio Nacional Argentino and the Oficina Meteorológica Argentina. The proposed funding for these new national institutions, as well as their connection to public policies, were riven by conflicts inherent to that phase of the construction of the State. Some sectors opposed the bills before the Congreso Nacional, arguing that resources were scarce. President Domingo Sarmiento charged that they were allies of the previous government, which he described as "barbarous." This article shows that the bills' supporters stressed that they were low-cost. They achieved passage of the bills by linking their discourse with contemporary policies aimed at other concerns, such as education, immigration and epidemics.

"Todos los instrumentos están en buen estado". Disputas en torno al funcionamiento de los telescopios del Observatorio Astronómico Nacional de Chile en el siglo XIX / All instruments are in good condition". Disputes surrounding the operation of the telescopes at the National Astronomical Observatory of Chile in the 19th Century

El artículo analiza una controversia pública sobre el estado de los principales instrumentos del Observatorio Astronómico Nacional de Chile a fines del siglo XIX, las labores de reparación y mantención de estos y la producción científica de la institución. En la controversia participaron una amplia gama de actores, entre los que se encuentran miembros del Congreso Nacional, ministros de Estado, astrónomos, mecánicos y arquitectos. Este caso permite examinar la estrecha vinculación entre la esfera política y la tecnocientífica, evidenciándose en la administración, financiamiento, evaluación y fiscalización del quehacer del observatorio astronómico. Acá podemos observar cómo el cuestionamiento sobre la calidad científica, como el estado de los instrumentos de la institución, enfrentó no solo los juicios, sino la autoridad de quienes los emitían. Por otro lado, esta controversia permite observar cómo la necesidad de crear tecnologías asociadas y adaptar los instrumentos astronómicos dio un protagonismo a mecánicos, ingenieros y arquitectos, actores muchas veces invisibles en comparación con los astrónomos

This paper analyses a public controversy about the state of the main instruments at the National Astronomical Observatory of Chile at the end of the 19th century, the repair and the maintenance work of these tools and the scientific production of this institution. The controversy involved a wide range of actors, including members of the National Congress, ministers of State, astronomers, mechanics and architects. This case examines the close link between the political and the techno-scientific spheres, evidenced in the administration, financing, evaluation and oversight of the work of the observatory. We can observe how the questioning of scientific quality, such as the state of the instruments of the institution, faced not only the judgments, but also the authority of those who issued. Also, this controversy allows us to observe how the need to create associated technologies and adapt astronomical instruments gave prominence to mechanics, engineers and architects, actors often invisible in comparison to astronomers

Galeno y Vesalius y la revolución científica en la circulación sanguínea: historia y epistemología para la educación / Galen and Vesalius and the scientific revolution in blood circulation: History and epistemology for education

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Andrés Bello y la difusión de la astronomía: educación y retórica científica / Andres Bello and the dissemination of astronomy: education and scientific rhetoric

En este trabajo se analizan los textos de divulgación astronómica escritos por Andrés Bello entre 1810 y 1848, desde sus propósitos educativos y su expresión retórica, proponiendo que aquellos se enfocan en mostrar el progreso de la astronomía - tanto en lo que se refiere al conocimiento de la naturaleza, como al avance en materia instrumental - como un saber que permite mejorar las condiciones materiales y cognitivas de las naciones, y cuya enseñanza debe realizarse a través de la activación de la imaginación y la creatividad. Esto último se relacionará con los esfuerzos de Bello por mantener una fuerte vinculación entre ciencias y artes, y en este caso concreto, entre astronomía y literatura (AU)

This paper analyzes the astronomical texts written by Andres Bello between 1810 and 1848, from its educational nature to its rhetorical expression, suggesting that their main purpose was to show the advances in the field - in terms of knowledge production and also technology development - in order to improve the material and intellectual environment of the nation. It also stands that astronomy should be tought by activating creativity and imagination, which may be linked with Bello’s willing to avoid science and art develop apart from each other, keeping, in this case astronomy bonded with literature (AU)

José M. Melià Bernabéu «Pigmalión» y la divulgación de la astronomía en la Valencia de la primera mitad del siglo XX / No disponible

José M. Melià Bernabéu, alias «Pigmalión», fue un autor valenciano conocido por sus trabajos de divulgación científica, en particular en el ámbito de la astronomía. Convencido de la importancia de la educación y de la labor social que el estudio y la observación de los cielos podía desempeñar, Pigmalión dedicó sus esfuerzos a cultivar una importante actividad de difusión del conocimiento científico a través de artículos de prensa, libros, charlas y conferencias radiofónicas. Este artículo analiza todas estas iniciativas con el objeto de reivindicar la complejidad de los procesos de comunicación científica y mostrar las principales características de unas prácticas en las que convergían estrategias aparentemente contradictorias y que con tanto éxito se cultivaron en la España de la primera mitad del siglo XX (AU)

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A demonstração das ondas gravitacionais e suas possibilidades de aplicação na área de saúde / The demonstration of gravitational waves and their application possibilities in the health area

Entrevista realizada no dia 31 de março de 2016, Instituto de Física, Universidade Federal Fluminense, Brasil. Entrevistado: Rodrigo Picanço Negreiros Bolsista de Produtividade em Pesquisa do CNPq - Nível 2 - CA FA - Física e Astronomia. Possui graduação em Física pela Universidade Federal Fluminense (2004), mestrado em Física pela Universidade Federal Fluminense (2005) e Ph.D. pela San Diego State University/Claremont Graduate University. Atuou como um posdoc no Frankfurt Institute for Advance Studies, na Goethe University, em Frankfurt am Main, Alemanha. Atualmente é professor no Instituto de Física da Universidade Federal Fluminense. Suas áreas de pesquisa envolvem principalmente física nuclear e estrelas compactas (estrelas de nêutrons, estrelas de quarks, pulsares ...), astrofísica relativística, métodos numéricos e física de matéria ultra-densa. Entrevistadores: Dalmo Machado Valério de Lima RN (UFF), MSN (UNIRIO), PhD (USP). Professor Adjunto da Escola de Enfermagem Aurora de Afonso Costa (EEAAC/UFF), do Programa de Pós-Graduação em Ciências Cardiovasculares (PPGCCV/UFF) e do Programa de Mestrado Profissional em Enfermagem Assistencial (MPEA/UFF), Editor Chefe do Online Brazilian Journal of Nursing (OBJN), Conselho Consultivo da Associação Brasileira de Editores Científicos (ABEC), Líder de Grupo de Pesquisa: Cardiovisão ­ Núcleo de Cardiointensivismo Baseado em Evidências e Gestão de Informação e Conhecimento em Saúde Jorge Luiz Lima da Silva RN (UFF), MSN (UNIRIO), Doutor em Ciências área de Saúde Pública (ENSP/FIOCRUZ). Professor Adjunto da Escola de Enfermagem Aurora de Afonso Costa (EEAAC/UFF), Editor Associado do Online Brazilian Journal of Nursing (OBJN), integrante do Grupo de Pesquisa: Trabalho em Turnos e Repercussões na Saúde.

Anatomical Achievement and Thought of Leonardo da Vinci / 체질인류학회지

Leonardo da Vinci is remembered as the greatest genius of the Renaissance. He left outstanding achievements as an artist, scientist and inventor, and contributes up to today's science. He ranks the best in a variety of fields, such as botany, mathematics, geology, astronomy, geometry and optics. It has well known that Leonardo is an artist, scientist, inventor and philosopher. And he was a great anatomist that dissected dead bodies and animals directly and left many anatomical drawings. He took an interest in anatomy from the point of view of the artist, which is why the human body structure and function to know the sakes were "ignorant of the anatomy should not be upset." Over time, he became interested in the structure and function of the body, even get the human body in a difficult environment; he dissected many the human bodies directly. His scientific inquiry and infatuation made him as an advanced pioneer for more than 100 years, and got enough level to surpass the artistry. Leonardo left about 1,800 anatomical figures of the muscular, skeletal, vascular, nervous and urogenital system, and they are also very scientific and high artistic achievements. The aim of this article is to take a look at Leonardo da Vinci's anatomical achievements and thoughts. In addition, the goal is to knowledge today's anatomists about Leonardo da Vinci's astonishing achievements as a great pioneer in anatomy.

Escepticismo, teología y ciencia: el caso del movimiento terrestre / Skepticism, theology and science: the case of earth's motion

La tesis de la omnipotencia divina, según la cual Dios puede hacer cualquier cosa que no entrañe contradicción, fue usada por los teólogos bajomedievales como argumento escéptico contra las pretensiones de conocimiento de los físicos. La astronomía, una ciencia matemática, se limitaba a construir modelos de datos respetando los supuestos aceptables por la física que a su vez se debían subordinar a la teología. En el siglo XIV, el teólogo Nicolás de Oresme comparó los argumentos a favor de la rotación terrestre y a favor del giro de los cielos. Siendo un experto matemático y filósofo natural, concluyó la mayor plausibilidad de la primera hipótesis, aunque el escepticismo teológico lo llevó a considerar esas razones insuficientes y a declarar su falsedad por motivos bíblicos. La situación cambió en el siglo XVII. En primer lugar, la Reforma indujo entre los católicos un mayor fundamentalismo; en segundo lugar, los argumentos físicos de Galileo a favor del movimiento terrestre y su refutación del esquema ptolemaico por las fases de Venus hacían insostenible la equidistancia escéptica respecto a ambas posiciones; en tercer lugar, la falta de competencia científica de los actores eclesiásticos llevó a condenar a Galileo y declarar el heliocentrismo falso y formalmente herético (AU)

The Omnipotentia Dei absoluta thesis (any non-contradictory state of fact is possible) was used by theologians as a skeptical argument against any scientific claim unwarranted by biblical exegesis. Mathematical astronomy was bound to build models of data based on physically sound hypothesis acceptable to theology. Fourteenth century theologian Nicolas Oresme weighted the arguments pro Earth and Heavens rotation. Being an expert in mathematics and natural philosophy, concluded the higher plausibility of Earth’s rotation, but skeptical considerations declared those arguments insufficient and the opinion false for scriptural reasons. Seventeenth century setting was much different: Reform induced an increase of catholic fundamentalism, while Galileo’s physical arguments in support of Copernicanism, together with his refutation of Ptolemaic cosmology due to Venus phases, turned the skeptical balance between both systems untenable. Roman theologians being this time ignoramuses in mathematics and physics, condemned Galileo and declared heliocentrism false, physically absurd, and formally heretic (AU)

Clouds, airplanes, trucks and people: carrying radioisotopes to and across Mexico

The aim of this paper is to describe the early stages of Mexican nuclearization that took place in contact with radioisotopes. This history requires a multilayered narrative with an emphasis in North-South asymmetric relations, and in the value of education and training in the creation of international asymmetrical networks. Radioisotopes were involved in exchanges with the United States since the late 1940s, but also with Canada. We also describe the context of implementation of Eisenhower´s Atoms for Peace initiative in Mexico that opened the door to training programs at both the Comisión Nacional de Energía Nuclear and the Universidad Nacional Autónoma de México. Radioisotopes became the best example of the peaceful applications of atomic energy, and as such they fitted the Mexican nuclearization process that was and still is defined by its commitment to pacifism. In 1955 Mexico became one of the 16 members of the atomic fallout network established by the United Nations. As part of this network, the first generation of Mexican (women) radio-chemists was trained. By the end of the 1960s, radioisotopes and biological markers were being produced in a research reactor, prepared and distributed by the CNEN within Mexico. We end up this paper with a brief reflection on North-South nuclear exchanges and the particularities of the Mexican case (AU)

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