Uma (pequena) Hist´oria do Tempo

e-Boletim da Física

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Title Uma (pequena) Hist´oria do Tempo
 
Creator Simon, Samuel
 
Description The concept of time has a long history, which has its roots in the classical period, where it is possible to identify, particularly from the Aristotle’s work, three closely related concepts: psychological time, physical time and cosmological time. As for the history of physical time, it must be understood as a quest for improvement and for the close relationship of three other aspects: its measure, its conceptualization properly speaking - particularly related to the notion of continuity - and its formal aspect, given by mathematization, which begins in the modern period. This improvement appears to have had a defining moment when the medieval philosophy turned to the quantification of various concepts - especially with the calculators of the Merton College - which, in case time, was possible with the adoption (or rescue) of the algebra, which improved upon the concept of movement, particularly speed, and indirectly that of time. But if this improvement constituted a legacy for contemporary physics, the history of recent science reveals new links: the relationship between these three aspects - measure, conceptualization and formalism- now derive from the founding principles of relativity theory and its underlying mathematical structure.
O conceito de tempo possui uma longa hist´oria, que tem suas ra´ızes no per´ıodo cl´assico, onde ´e poss´ıvel identificar, particularmente a partir do trabalho de Arist´oteles, trˆes no¸c˜oes estritamente vinculadas: o tempo psicol´ogico, o tempo f´ısico e o tempo cosmol´ogico. Por sua vez, a hist´oria do tempo f´ısico deve ser entendida como uma busca do aprimoramento e da rela¸c˜ao estreita de trˆes outros aspectos: sua medida, sua conceitua¸c˜ao propriamente dita - particularmente vinculada `a no¸c˜ao de continuidade - e o seu aspecto formal, dado pela matematiza¸c˜ao, a partir do per´ıodo moderno. Esse aprimoramento parece ter tido um momento decisivo quando o pensamento medieval voltou-se para a quantifica¸c˜ao de v´arios conceitos - especialmente com os calculadores do Merton College - o que, no caso do tempo, foi poss´ıvel com a ado¸c˜ao (ou resgate) da ´algebra que aprimorou o conceito de movimento, particularmente de velocidade e, indiretamente, do tempo. Mas se esse aprimoramento constituiu-se num legado para a F´ısica contemporˆanea, a hist´oria da ciˆencia recente nos revela novos v´ınculos: as rela¸c˜oes entre esses trˆes aspectos - a medida, a conceitua¸c˜ao e o formalismo - decorrem agora dos princ´ıpios fundadores da Teoria da Relatividade e da estrutura matem´atica subjacente.
 
Publisher Instituto de Física
 
Date 2016-12-01
 
Type info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
 
Format application/pdf
 
Identifier http://periodicos.unb.br/index.php/e-bfis/article/view/9821
10.26512/e-bfis.v3i6.9821
 
Source e-Boletim da Física; v. 3 n. 6 (2014); 1-4
2318-8901
 
Language por
 
Relation http://periodicos.unb.br/index.php/e-bfis/article/view/9821/8677
 

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