Mohammad Mahdi Sadrforati; Amir Mohammad Gamini
Abstract
This paper investigates the evolution of the concept orb in order to give a rational explanation for the concept's introduction and dissolution. This concept, we will argue, was initially introduced in the Greek culture, while suffering from some conceptual ambiguitites. In particular, two geometrical ...
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This paper investigates the evolution of the concept orb in order to give a rational explanation for the concept's introduction and dissolution. This concept, we will argue, was initially introduced in the Greek culture, while suffering from some conceptual ambiguitites. In particular, two geometrical and physical understandings were associated with the concept and they were indistinguishable among different passages. For Ptolemy, the concept of orb had both geometrical and physical realizations in different treatises. But such conceptual ambiguity was gradually eliminated in the Islamic age of science. We believe that this concept articulation was initiated from the early tenth century by the works of Ibn al-Haytham and Al-Bīrūnī and by the end of the thirteenth century ultimately the concept was used with its highest clarity. We will enumerate some key conceptual characteristics of the concept in this period in order to show how these components marked the beginning of its dissolution in the sixteenth century. In particular, Tycho Brahe and his fellow astronomers in the sixteenth century decided to abandon the concept for some contradictions between these conceptual components and their own empirical observations.
Azadeh Doustelahi; Mostafa Taqavi; seyed ali samadi
Volume 11, Issue 21 , June 2021, , Pages 47-62
Abstract
AbstractIn this article, we use Thagard's conceptual tree theory to explain the increase in the number of people with "Autism Spectrum Disorders." At first glance, the explanation for the increase in the number of cases of this disorder may be due to the actual increase in the number of people, for reasons ...
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AbstractIn this article, we use Thagard's conceptual tree theory to explain the increase in the number of people with "Autism Spectrum Disorders." At first glance, the explanation for the increase in the number of cases of this disorder may be due to the actual increase in the number of people, for reasons that have not yet been identified. Or that medical professionals have developed more accurate tools for identification and screening. But this initial explanation for the increase in the number of people can also have complementary explanations, such as medicalization and conceptual change. In this article, we explain the conceptual change; In such a way that the increase in the number of cases is due to changes in the concept of this disorder, which results in the inclusion of new people who were not previously included in this spectrum. It is also cited as an alternative explanation for Paul Thagard's theory of the tree of conceptual change, in which he researched the conceptual hierarchical change of tuberculosis And by applying his theory, we show that the increase in the number of cases of autism spectrum disorders can be due to a change in the concept of autism, in addition to the possibility of an increase in the number of people and more accurate medical devices..
