The invention of the pile by Alessandro Volta: difficulties in establishing the identity between galvanism and electricity

Detalhes bibliográficos
Autor(a) principal: Martins, Roberto de Andrade
Data de Publicação: 2008
Tipo de documento: Artigo
Idioma: por
Título da fonte: Acta scientiarum. Technology (Online)
Texto Completo: http://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/3079
Resumo: Galvani discovered that contact with metals could produce muscular contractions in frogs. He interpreted the phenomenon as due to an invisible fluid, called “animal electricity”. Volta was convinced that those phenomena were due to common electricity produced by the contact between two different metals. As an evidence of his points of view he showed that weak electricity produced by a pair of metals could be amplified with an apparatus called condenser, allowing its detection in electrometers. However, there was no general acceptance of his ideas, because all the evidences provided were indirect. The invention of the pile allowed Volta to produce effects that were much stronger. Nevertheless, some well-grounded doubts subsisted concerning the identity between electricity produced by friction and the effects produced by piles. This paper describes that historical episode and discusses the methodological issue of the foundations of claims of identity two similar phenomena.
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spelling The invention of the pile by Alessandro Volta: difficulties in establishing the identity between galvanism and electricityAlessandro Volta e a invenção da pilha: dificuldades no estabelecimento da identidade entre o galvanismo e a eletricidadehistória da físicaeletricidadeAlessandro Volta1.05.00.00-6 FísicaGalvani discovered that contact with metals could produce muscular contractions in frogs. He interpreted the phenomenon as due to an invisible fluid, called “animal electricity”. Volta was convinced that those phenomena were due to common electricity produced by the contact between two different metals. As an evidence of his points of view he showed that weak electricity produced by a pair of metals could be amplified with an apparatus called condenser, allowing its detection in electrometers. However, there was no general acceptance of his ideas, because all the evidences provided were indirect. The invention of the pile allowed Volta to produce effects that were much stronger. Nevertheless, some well-grounded doubts subsisted concerning the identity between electricity produced by friction and the effects produced by piles. This paper describes that historical episode and discusses the methodological issue of the foundations of claims of identity two similar phenomena.Galvani descobriu que ocorriam contrações musculares em rãs em contato com metais e interpretou o fenômeno como causado por um fluido invisível, a ‘eletricidade animal’. Volta convenceu-se de que esses fenômenos aconteceriam devido à eletricidade comum produzida pelo contato entre dois metais diferentes. Apresentou a evidência de que um par de metais produzia uma eletricidade muito fraca, que podia ser amplificada por um aparelho chamado “condensador”, permitindo a sua detecção em eletrômetros. No entanto, esses aparelhos não levaram à aceitação geral de suas idéias, pois apenas proporcionavam evidências indiretas. A invenção da pilha permitiu produzir efeitos muito mais fortes do que antes. Mesmo assim, subsistiam dúvidas bem fundadas sobre a identidade entre a eletricidade produzida por atrito e os efeitos produzidos pelas pilhas. Este trabalho apresenta uma descrição desse episódio histórico e discute a questão metodológica de como se pode fundamentar a identidade ou diversidade de causas de dois fenômenos semelhantes.Universidade Estadual De Maringá2008-05-14info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/307910.4025/actascitechnol.v21i0.3079Acta Scientiarum. Technology; Vol 21 (1999); 823-835Acta Scientiarum. Technology; v. 21 (1999); 823-8351806-25631807-8664reponame:Acta scientiarum. Technology (Online)instname:Universidade Estadual de Maringá (UEM)instacron:UEMporhttp://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/3079/2362Martins, Roberto de Andradeinfo:eu-repo/semantics/openAccess2024-05-17T13:02:54Zoai:periodicos.uem.br/ojs:article/3079Revistahttps://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/indexPUBhttps://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/oai||actatech@uem.br1807-86641806-2563opendoar:2024-05-17T13:02:54Acta scientiarum. Technology (Online) - Universidade Estadual de Maringá (UEM)false
dc.title.none.fl_str_mv The invention of the pile by Alessandro Volta: difficulties in establishing the identity between galvanism and electricity
Alessandro Volta e a invenção da pilha: dificuldades no estabelecimento da identidade entre o galvanismo e a eletricidade
title The invention of the pile by Alessandro Volta: difficulties in establishing the identity between galvanism and electricity
spellingShingle The invention of the pile by Alessandro Volta: difficulties in establishing the identity between galvanism and electricity
Martins, Roberto de Andrade
história da física
eletricidade
Alessandro Volta
1.05.00.00-6 Física
title_short The invention of the pile by Alessandro Volta: difficulties in establishing the identity between galvanism and electricity
title_full The invention of the pile by Alessandro Volta: difficulties in establishing the identity between galvanism and electricity
title_fullStr The invention of the pile by Alessandro Volta: difficulties in establishing the identity between galvanism and electricity
title_full_unstemmed The invention of the pile by Alessandro Volta: difficulties in establishing the identity between galvanism and electricity
title_sort The invention of the pile by Alessandro Volta: difficulties in establishing the identity between galvanism and electricity
author Martins, Roberto de Andrade
author_facet Martins, Roberto de Andrade
author_role author
dc.contributor.author.fl_str_mv Martins, Roberto de Andrade
dc.subject.por.fl_str_mv história da física
eletricidade
Alessandro Volta
1.05.00.00-6 Física
topic história da física
eletricidade
Alessandro Volta
1.05.00.00-6 Física
description Galvani discovered that contact with metals could produce muscular contractions in frogs. He interpreted the phenomenon as due to an invisible fluid, called “animal electricity”. Volta was convinced that those phenomena were due to common electricity produced by the contact between two different metals. As an evidence of his points of view he showed that weak electricity produced by a pair of metals could be amplified with an apparatus called condenser, allowing its detection in electrometers. However, there was no general acceptance of his ideas, because all the evidences provided were indirect. The invention of the pile allowed Volta to produce effects that were much stronger. Nevertheless, some well-grounded doubts subsisted concerning the identity between electricity produced by friction and the effects produced by piles. This paper describes that historical episode and discusses the methodological issue of the foundations of claims of identity two similar phenomena.
publishDate 2008
dc.date.none.fl_str_mv 2008-05-14
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/3079
10.4025/actascitechnol.v21i0.3079
url http://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/3079
identifier_str_mv 10.4025/actascitechnol.v21i0.3079
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv http://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/3079/2362
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Universidade Estadual De Maringá
publisher.none.fl_str_mv Universidade Estadual De Maringá
dc.source.none.fl_str_mv Acta Scientiarum. Technology; Vol 21 (1999); 823-835
Acta Scientiarum. Technology; v. 21 (1999); 823-835
1806-2563
1807-8664
reponame:Acta scientiarum. Technology (Online)
instname:Universidade Estadual de Maringá (UEM)
instacron:UEM
instname_str Universidade Estadual de Maringá (UEM)
instacron_str UEM
institution UEM
reponame_str Acta scientiarum. Technology (Online)
collection Acta scientiarum. Technology (Online)
repository.name.fl_str_mv Acta scientiarum. Technology (Online) - Universidade Estadual de Maringá (UEM)
repository.mail.fl_str_mv ||actatech@uem.br
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