ד"ר יעל קדר

Kedar, Y., & Hon, G. (2026). Infinities of Different Kinds: A Medieval Exploration. Perspectives on Science 34(2), 137-149. .

(with Baltuta, E). “Extension and Division: The Ontological Status of Quantity in the Thirteenth and Fourteenth Centuries – Introductory Remarks”. British Journal for the History of Philosophy, 2024.

"Propter quid demonstrations: Roger Bacon on geometrical causes in natural philosophy". Synthese 203(1) (2024): 1-24..

“Colours and their Species – Apparent or Real? Roger Bacon’s Mature Colour Theory”. In Decaix, V. and Ierodiakonu, K (eds.), Theories of Colour from Democritus to Descartes. 2024, London: Routledge, pp. 199-215.

“The Geometrical Atomism of Roger Bacon”. British Journal for the History of Philosophy, 2024.

“Roger Bacon’s De sensu Colour Theory”, Micrologus XXXI (2023): 45-62.

"Sound is not made of rays. Roger Bacon’s rejection of heavenly music". In: The Philosophy and Science of Roger Bacon. 2021, London: Routledge.

(with Hackett, J.) “Roger Bacon within the Medieval Setting - New findings”, Revista Española de Filosofía Medieval 28/1 (2021): 9-14.

(with Polloni, N., Eds.) The Philosophy and Science of Roger Bacon: Studies in Honour of Jeremiah Hackett. 2021, London: Routledge.‏

“Virtus and species in the Philosophy of Nature of Roger Bacon (c. 1220-1293)”, Revista Española de Filosofía Medieval 28/1 (2021): 43-66.

(with Demange, D.) Physical Action, Species, and Matter: The Debate between Roger Bacon and Peter John Olivi. Journal of the History of Philosophy 58(1) (2020), 49-69.

(with G. Hon) guest editors, special issue. (2020). “Law and Order: The status of natural regularities before the scientific revolution.” Studies in History and Philosophy of Science Part A

(with G. Hon) “‘Natures’ and ‘Laws’: the Making of the Concept of Law of Nature Robert Grosseteste (c. 1168 – 1253) and Roger Bacon (1214/1220 – 1292)”. Studies in the History and Philosophy of Science Part A 61 (2017): 21-31.

(with G. Hon), “Roger Bacon (c. 1220-1292) and his System of Laws of Nature: Classification, Hierarchy and Significance”. Perspectives on Science 26 (2017): 719-745.

"The Nomological Image of Nature: Explaining the Tide in the Thirteenth Century". Annals of Science 73(1) (2016): 68-88.

“Laying the Foundation for the Nomological Image of Nature: From Corporeity in Robert Grosseteste (c. 1168 – 1253) to Species in Roger Bacon (1220 – 1292)”. In J. P. Cunningham (ed.), Robert Grosseteste and the Pursuit of Religious and Scientific Learning in the Middle-Ages, pp. 165–185. Springer (2016)