Why the percussion of a spring produces the same sound of “blaster pistols” in the movie Star Wars?

Detalhes bibliográficos
Autor(a) principal: Ribeiro, Jair Lúcio Prados
Data de Publicação: 2014
Tipo de documento: Artigo
Idioma: por
Título da fonte: Caderno Brasileiro de Ensino de Física (Online)
Texto Completo: https://periodicos.ufsc.br/index.php/fisica/article/view/2175-7941.2014v31n2p385
Resumo: When a stretched metal spring is hit sideways, a whistler is produced. The whistler is a sound effect that has become part of today's culture due to its popularity as the sound of a "laser gun" in the movie Star Wars. The whistler occurs due to sound dispersion in the metal, but the revision of High School textbooks and University education shows that a discussion of this phenomenon is not present. We present an experimental activity that can be conducted in High School, in order to detect the whistler and analyze it with a sound editing program.  The graphical analysis allowed us to approximately determine that the frequency of propagating sound and its time detection are inversely related.
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spelling Why the percussion of a spring produces the same sound of “blaster pistols” in the movie Star Wars?Por que a percussão de uma mola produz o mesmo som de “pistolas laser” do filme Star Wars?When a stretched metal spring is hit sideways, a whistler is produced. The whistler is a sound effect that has become part of today's culture due to its popularity as the sound of a "laser gun" in the movie Star Wars. The whistler occurs due to sound dispersion in the metal, but the revision of High School textbooks and University education shows that a discussion of this phenomenon is not present. We present an experimental activity that can be conducted in High School, in order to detect the whistler and analyze it with a sound editing program.  The graphical analysis allowed us to approximately determine that the frequency of propagating sound and its time detection are inversely related.Ao se bater lateralmente em uma mola metálica esticada, é produzido  um sibilo,  um  efeito  sonoro  que  se  tornou parte da cultura atual devido à sua popularização como o som de uma “pistola laser” no filme Star Wars. O sibilo ocorre devido à dispersão do som em um metal, mas a revisão de obras didáticas de ensino médio e superior mostra que a discussão desse fenômeno não está presente. Apresentamos uma atividade experimental possível de ser conduzida no ensino médio, a fim de detectar o sibilo e analisá-lo em um programa de edição de som. A análise gráfica permitiu determinar, de forma aproximada, que há uma relação inversamente proporcional entre a frequência do som que se propaga na mola e o tempo de detecção.Imprensa Universitária - UFSC2014-03-14info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://periodicos.ufsc.br/index.php/fisica/article/view/2175-7941.2014v31n2p38510.5007/2175-7941.2014v31n2p385Caderno Brasileiro de Ensino de Física; v. 31 n. 2 (2014); 385-3992175-79411677-2334reponame:Caderno Brasileiro de Ensino de Física (Online)instname:Universidade Federal de Santa Catarina (UFSC)instacron:UFSCporhttps://periodicos.ufsc.br/index.php/fisica/article/view/2175-7941.2014v31n2p385/27323Ribeiro, Jair Lúcio Pradosinfo:eu-repo/semantics/openAccess2018-03-16T10:22:41Zoai:periodicos.ufsc.br:article/30092Revistahttp://www.periodicos.ufsc.br/index.php/fisicaPUBhttps://periodicos.ufsc.br/index.php/fisica/oaicbefisica@gmail.com||fscccef@fsc.ufsc.br|| cbefisica@gmail.com2175-79411677-2334opendoar:2018-03-16T10:22:41Caderno Brasileiro de Ensino de Física (Online) - Universidade Federal de Santa Catarina (UFSC)false
dc.title.none.fl_str_mv Why the percussion of a spring produces the same sound of “blaster pistols” in the movie Star Wars?
Por que a percussão de uma mola produz o mesmo som de “pistolas laser” do filme Star Wars?
title Why the percussion of a spring produces the same sound of “blaster pistols” in the movie Star Wars?
spellingShingle Why the percussion of a spring produces the same sound of “blaster pistols” in the movie Star Wars?
Ribeiro, Jair Lúcio Prados
title_short Why the percussion of a spring produces the same sound of “blaster pistols” in the movie Star Wars?
title_full Why the percussion of a spring produces the same sound of “blaster pistols” in the movie Star Wars?
title_fullStr Why the percussion of a spring produces the same sound of “blaster pistols” in the movie Star Wars?
title_full_unstemmed Why the percussion of a spring produces the same sound of “blaster pistols” in the movie Star Wars?
title_sort Why the percussion of a spring produces the same sound of “blaster pistols” in the movie Star Wars?
author Ribeiro, Jair Lúcio Prados
author_facet Ribeiro, Jair Lúcio Prados
author_role author
dc.contributor.author.fl_str_mv Ribeiro, Jair Lúcio Prados
description When a stretched metal spring is hit sideways, a whistler is produced. The whistler is a sound effect that has become part of today's culture due to its popularity as the sound of a "laser gun" in the movie Star Wars. The whistler occurs due to sound dispersion in the metal, but the revision of High School textbooks and University education shows that a discussion of this phenomenon is not present. We present an experimental activity that can be conducted in High School, in order to detect the whistler and analyze it with a sound editing program.  The graphical analysis allowed us to approximately determine that the frequency of propagating sound and its time detection are inversely related.
publishDate 2014
dc.date.none.fl_str_mv 2014-03-14
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 https://periodicos.ufsc.br/index.php/fisica/article/view/2175-7941.2014v31n2p385
10.5007/2175-7941.2014v31n2p385
url https://periodicos.ufsc.br/index.php/fisica/article/view/2175-7941.2014v31n2p385
identifier_str_mv 10.5007/2175-7941.2014v31n2p385
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://periodicos.ufsc.br/index.php/fisica/article/view/2175-7941.2014v31n2p385/27323
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 Imprensa Universitária - UFSC
publisher.none.fl_str_mv Imprensa Universitária - UFSC
dc.source.none.fl_str_mv Caderno Brasileiro de Ensino de Física; v. 31 n. 2 (2014); 385-399
2175-7941
1677-2334
reponame:Caderno Brasileiro de Ensino de Física (Online)
instname:Universidade Federal de Santa Catarina (UFSC)
instacron:UFSC
instname_str Universidade Federal de Santa Catarina (UFSC)
instacron_str UFSC
institution UFSC
reponame_str Caderno Brasileiro de Ensino de Física (Online)
collection Caderno Brasileiro de Ensino de Física (Online)
repository.name.fl_str_mv Caderno Brasileiro de Ensino de Física (Online) - Universidade Federal de Santa Catarina (UFSC)
repository.mail.fl_str_mv cbefisica@gmail.com||fscccef@fsc.ufsc.br|| cbefisica@gmail.com
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