This paper focuses on an understudied aspect of Hobbes's natural philosophy: his approach to the domain of life. I concentrate on the role assigned by Hobbes to the heart, which occupies a central role in both his account of human physiology and of the origin of animal locomotion. With this, I have three goals in mind. First, I aim to offer a cross-section of Hobbes's effort to provide a mechanistic picture of human life. Second, I aim to contextualize Hobbes's views (...) in the seventeenth-century debates on human physiology and animal locomotion. In particular, I will compare Hobbes's views with the theories put forth by Harvey, Descartes, the Galenic, and Peripatetic traditions. Also, I will show that Hobbes was receptive to advances within contemporary English physiology and chemistry. Third, by means of a comparison with Descartes, I advance some hypothesis to explain why Hobbes indentified the heart, and not the brain (as was increasingly com... (shrink)

In this paper, I argue for a novel reading of Spinoza’s position in his exchangewith Boyle about Boyle’s experiment with nitre. Boyle claimed to have shownthrough experiments that nitre ceased to be nitre after heating. Spinozadisagreed and proposed the alternative hypothesis that nitre has changed itsstate and not its nature. Spinoza’s position was construed in the literature asrational scepticism denying that experiments can yield knowledge ofessences because all sensory experience is underdetermined and open tomultiple interpretations. I (...) argue for an alternative reading of Spinoza’sposition which focuses on Bacon’s notion of crucial instance. According tothis reading, Spinoza did not deny the possibility of knowing byexperimentation whether nitre has changed its nature, he asked for a crucialinstance, i.e. an experiment that would refute the hypothesis that nitre haschanged merely its state. Spinoza’s argumentative strategy shows that,contrary to the mainstream reading, the representational content of sensoryideas can be determined even if it does not represent the essence of theobject: we can know with absolute, rather than merely moral, certaintywhether nitre ceased to be nitre without knowing what nitre is. (shrink)

In this paper, I argue for a novel reading of Spinoza’s position in his exchange with Boyle about Boyle’s experiment with nitre. Boyle claimed to have shown through experiments that nitre ceased to be nitre after heating. Spinoza disagreed and proposed the alternative hypothesis that nitre has changed its state and not its nature. Spinoza’s position was construed in the literature as rational scepticism denying that experiments can yield knowledge of essences because all sensory experience is (...) underdetermined and open to multiple interpretations. I argue for an alternative reading of Spinoza’s position which focuses on Bacon’s notion of crucial instance. According to this reading, Spinoza did not deny the possibility of knowing by experimentation whether nitre has changed its nature, he asked for a crucial instance, i.e. an experiment that would refute the hypothesis that nitre has changed merely its state. Spinoza’s argumentative strategy shows that, contrary to the mainstream reading, the representational content of sensory ideas can be determined even if it does not represent the essence of the object: we can know with absolute, rather than merely moral, certainty whether nitre ceased to be nitre without knowing what nitre is. (shrink)

Danišová, Nikola, 2021. Marginálie k figúre šibala v arcinaratívoch (Tematologicko-kultúrne súvislosti). Nitra: Univerzita Konštantína Filozofa v Nitre. ISBN 978-80-558-1807-8.

In this paper, I argue for a novel reading of Spinoza’s position in his exchange with Boyle about Boyle’s experiment with nitre. Boyle claimed to have shown through experiments that nitre ceased to be nitre after heating. Spinoza disagreed and proposed the alternative hypothesis that nitre has changed its state and not its nature. Spinoza’s position was construed in the literature as rational scepticism denying that experiments can yield knowledge of essences because all sensory experience is (...) underdetermined and open to multiple interpretations. I argue for an alternative reading of Spinoza’s position which focuses on Bacon’s notion of crucial instance. According to this reading, Spinoza did not deny the possibility of knowing by experimentation whether nitre has changed its nature, he asked for a crucial instance, i.e. an experiment that would refute the hypothesis that nitre has changed merely its state. Spinoza’s argumentative strategy shows that, contrary to the mainstream reading, the representational content of sensory ideas can be determined even if it does not represent the essence of the object: we can know with absolute, rather than merely moral, certainty whether nitre ceased to be nitre without knowing what nitre is. (shrink)

SummaryA letter in which astronomer John Flamsteed expounded his unusual views about the causes of earthquakes survives in a number of drafts and copies. Though it was compiled in response to shocks felt in England in 1692 and Sicily in 1693, its relationship to the wide range of comparable theories current in the later seventeenth century must be considered. Flamsteed's suggestion that an ‘earthquake’ might be an explosion in the air was linked with contemporary thinking about the roles of sulphur (...) and nitre in earthquakes underground, and in combustion, respiration, and other processes. It reveals his concern with subjects other than astronomy and the influence of his continuing contact with members of the Royal Society; it also offers an early example of how seventeenth-century work on sulphur and nitre prepared the way for ‘airquake’ and electrical theories associated with the London earthquake of 1750. (shrink)

Faster R-CNN architecture is used to solve the problems of moving path uncertainty, changeable coverage, and high complexity in cold-air induced large-scale intensive temperature-reduction detection and classification, since those problems usually lead to path identification biases as well as low accuracy and generalization ability of recognition algorithm. In this paper, an improved recognition method of national ITR path in China based on faster R-CNN in complicated meteorological systems is proposed. Firstly, quality control of the original dataset of strong cooling processes (...) is carried out by means of data filtering. Then, according to the NITR standard and the characteristics of NITR, the NITR dataset in China is established by the intensive temperature-reduction areas located through spatial transformation. Meanwhile, considering that the selection of regularization parameters of Softmax classification method will cause the problem of probability calculation, support vector machine is used for path classification to enhance the confidence of classification. Finally, the improved faster R-CNN model is used to identify, classify, and locate the path of NITR events. The experimental results show that, compared to other models, the improved faster R-CNN algorithm greatly improves the performance of NITR’s path recognition, especially for the mixed NITR paths and single NITR paths. Therefore, the improved faster R-CNN model has fast calculation speed, high recognition accuracy, good robustness, and generalization ability of NITR path recognition. (shrink)

The so-called ‘redintegration experiment’ is traditionally at the center of the comments on the supposed Boyle/Spinoza controversy. A. Clericuzio influentially argued in his publications that, in De nitro, Boyle accounted for the ‘redintegration’ of saltpeter on the grounds of the chemical properties of corpuscles and “did not make any attempt to deduce them from mechanical principles”. By way of contrast, this paper argues that with his De nitro Boyle wanted to illustrate and promote his new corpuscular or mechanical philosophy, and (...) that he made significant attempts to explain the phenomena in terms of mechanical qualities. Boyle had borrowed the ‘redintegration experiment’ from R. Glauber and used it in an attempt to demonstrate that his philosophy was superior to the Peripatetic and Paracelsian theory. Consequently, Clericuzio’s characterization of the Boyle/Spinoza controversy as a discussion between a strict mechanical philosopher and a chemist is problematic and a wider view of Spinoza’s interpretation and its context gives a fairer picture. (shrink)

Se explora en este artículo cómo el hombre del desierto sufre un proceso de disolución de su cultura de origen ‘lixiviación cultural’-, emergiendo desde su interior un habla, una organización, un habitar y un laborar, que bajo el sol cristaliza una nueva identidad: el ser pampino. Como el salitre que recorrió el mundo fertilizando territorios cansados, también la fama del pampino recorrió el mundo; con su solidaridad, su sacrificio y su organización fue ejemplo para otros obreros del país y del (...) extranjero. El autor relata cómo surgió este sujeto social denominado pampino, y recorre las especificaciones de su laborar. (shrink)