Isaac Newton is best known as a mathematician and physicist. He invented the calculus, discovered universal gravitation and made significant advances in theoretical and experimental optics. His master-work on gravitation, the Principia, is often hailed as the crowning achievement of the scientific revolution. His significance for philosophers, however, extends beyond the philosophical implications of his scientific discoveries. Newton was an able and subtle philosopher, working at a time when science was not yet recognized as an activity distinct (...) from philosophy. He engaged with the work of Rene Descartes and G.W. Leibniz, and showed sensitivity to the work of John Locke, Francis Bacon, Pierre Gassendi and Henry More, to name just a few. In his time, Newton was not perceived as a scientific outsider, but as an active and knowledgeable participant in philosophical debates.... (shrink)

Interpretarea textelor lui Isaac Newton a suscitat numeroase controverse, până în zilele noastre. Una din cele mai aprinse dezbateri este legată de acțiunea între două corpuri aflate la distanță unul de celălalt (atracția gravitațională), și în ce măsură Newton a implicat pe Dumnezeu în acest caz. Practic, majoritatea lucrărilor discută patru tipuri de atracții gravitaționale în cazul corpurilor aflate la distanță: acțiunea la distanță directă ca proprietate intrinsecă a corpurilor în sens epicurian; acțiunea la distanță directă mediată (...) divin, de Dumnezeu; acțiunea la distanță mediată printr-un eter material; sau acțiunea la distanță mediată printr-un eter imaterial. Scopul acestei lucrări este argumentarea opiniei proprii conform căreia Newton a refuzat categoric tipurile de acțiune directă ca proprietate intrinsecă a corpurilor, și acțiunea la distanță mediată printr-un eter material. În ceea ce privește celelalte două tipuri de acțiune, directă prin intervenție divină și mediată printr-un mediu imaterial, Newton a declarat în mai multe rânduri că nu cunoaște cauza exactă a gravitației, dar în amândouă cazuri a implicat pe Dumnezeu, în mod direct în primul caz și ca fiind cauza primară (mediul/eterul fiind cauza secundară) în acțiunea mediată imaterial. Însă, întrucât o recunoaștere a acțiunii directe la distanță ar fi putut da oarecare credit celor care considerau că gravitația poate fi esențială pentru materie, și în consecință ateismului, Newton nu a recunoscut niciodată în mod deschis acceptarea posibilității unei astfel de idei. Spre finele vieții, Newton a înclinat mai mult spre o acțiune la distanță mediată de un eter imaterial. În argumentarea acestei opinii am apelat la lucrările lui Andrew Janiak, Eric Schliesser John Henry, Hylarie Kochiras și Steffen Ducheyne. (shrink)

The interpretation of Isaac Newton's texts has sparked controversy to this day. One of the most heated debates relates to the action between two bodies distant from each other (the gravitational attraction), and to what extent Newton involved God in this case. Practically, most of the papers discuss four types of gravitational attractions in the case of remote bodies: direct distance action as intrinsic property of bodies in epicurean sense; direct remote action divinely mediated by God; remote (...) action mediated by a material ether; or remote action mediated by an immaterial ether. The purpose of this paper is to argue that Newton categorically rejected the types of direct action as the intrinsic property of bodies, and remote action mediated by a material ether. Concerning the other two types of action, direct through divine intervention and mediated through an immaterial environment, Newton has repeatedly stated that he does not know the exact cause of gravity, but in both cases, he has directly involved God, directly in the first case and as the primary cause (the environment/ether being the secondary cause) in immaterial mediated action. But since recognition of direct distance action could have given some credit to those who thought gravity could be essential to matter, and hence to atheism, Newton never openly acknowledged the possibility of such an idea. -/- Keywords: Isaac Newton, action at a distance, God, gravity, gravity law, gravitation -/- CONTENTS -/- Abstract Introduction Principia Correspondence with Richard Bentley Queries in Opticks Conclusions Bibliography -/- DOI: 10.13140/RG.2.2.25823.92320. (shrink)

One of the most disputed controversy over the priority of scientific discoveries is that of the law of universal gravitation, between Isaac Newton and Robert Hooke. Hooke accused Newton of plagiarism, of taking over his ideas expressed in previous works. In this paper I try to show, on the basis of previous analysis, that both scientists were wrong: Robert Hooke because his theory was basically only ideas that would never have materialized without Isaac Newton's mathematical (...) support; and the latter was wrong by not recognizing Hooke's ideas in drawing up the theory of gravity. Moreover, after Hooke's death and taking over the Royal Society presidency, Newton removed from the institution any trace of the former president Robert Hooke. For this, I detail the accusations and arguments of each of the parts, and how this dispute was perceived by the contemporaries of the two scientists. I finish the paper with the conclusions drawn from the contents. -/- Keywords: Isaac Newton, Robert Hooke, law of gravity, priority, plagiarism -/- CONTENTS -/- Abstract Introduction Robert Hooke's contribution to the law of universal gravitation Isaac Newton's contribution to the law of universal gravitation Robert Hooke's claim of his priority on the law of universal gravitation Newton's defense The controversy in the opinion of other contemporary scientists What the supporters of Isaac Newton say What the supporters of Robert Hooke say Conclusions Bibliography -/- DOI: 10.13140/RG.2.2.19370.26567 . (shrink)

L'une des controverses les disputées sur la priorité des découvertes scientifiques est celle de la loi de la gravitation universelle, entre Isaac Newton et Robert Hooke. Hooke a accusé Newton de plagiat, de reprendre ses idées exprimées dans des travaux antérieurs. J'essaie de montrer, sur la base d'une analyse précédente, que tous les deux scientifiques avaient tort: Robert Hooke parce que sa théorie n'était fondamentalement que des idées qui ne se seraient jamais matérialisées sans l'appui mathématique d' (...) class='Hi'>Isaac Newton; et ce dernier avait tort de ne pas reconnaître les idées de Hooke dans l'élaboration de la théorie de la gravité. En outre, après la mort de Hooke et son accession à la présidence de la Royal Society, Newton a retiré de l'institution toute trace de l'ancien président Robert Hooke. Pour cela, je détaille les accusations et les arguments de chacune des parties, et comment ce différend a été perçu par les contemporains des deux scientifiques. Je termine le papier avec les conclusions tirées du contenu. -/- TABLE: -/- Abstract Introduction La contribution de Robert Hooke à la loi de la gravitation universelle La contribution d'Isaac Newton à la loi de la gravitation universelle La revendication de priorité de Robert Hooke sur la loi de la gravitation universelle La défense de Newton La controverse dans l'opinion des scientifiques contemporains Ce que disent les supporters d'Isaac Newton Ce que disent les supporters de Robert Hooke Conclusions Bibliographie Notes -/- DOI: 10.13140/RG.2.2.20313.06245. (shrink)

Interpretarea textelor lui Isaac Newton a suscitat numeroase controverse, până în zilele noastre. Una din cele mai aprinse dezbateri este legată de acțiunea între două corpuri aflate la distanță unul de celălalt (atracția gravitațională), și în ce măsură Newton a implicat pe Dumnezeu în acest caz. Practic, majoritatea lucrărilor discută patru tipuri de atracții gravitaționale în cazul corpurilor aflate la distanță: acțiunea la distanță directă ca proprietate intrinsecă a corpurilor în sens epicurian; acțiunea la distanță directă mediată (...) divin, de Dumnezeu; acțiunea la distanță mediată printr-un eter material; sau acțiunea la distanță mediată printr-un eter imaterial. DOI: 10.13140/RG.2.2.33372.03203. (shrink)

L'interprétation des textes d'Isaac Newton a suscité une controverse à ce jour. L'un des débats les plus animés a trait à l'action entre deux corps distants l'un de l'autre (l'attraction gravitationnelle), et à la mesure dans laquelle Newton a impliqué Dieu dans ce cas. Pratiquement, la plupart des articles traitent quatre types d’attractions gravitationnelles dans le cas des corps distants : l’action directe à la distance en tant que propriété intrinsèque des corps au sens épicurien du terme (...) ; action directe à distance divinement médiée par Dieu ; action à distance médiée par un éther matériel ; ou action à distance médiée par un éther immatériel. Le but de cet article est d'argumenter que Newton a catégoriquement rejeté les types d'action directe en tant que propriété intrinsèque des corps et l'action à distance médiée par un éther matériel. En ce qui concerne les deux autres types d’actions, directe par intervention divine et médiatisée par un environnement immatériel, Newton a répété à plusieurs reprises qu’il ne connaissait pas la cause exacte de la gravité, mais dans les deux cas, il avait directement impliqué Dieu, directement dans le premier cas. et comme cause principale (l'environnement/éther étant la cause secondaire) dans l'action médiatisée immatérielle. Mais comme la reconnaissance de l'action directe à distance aurait pu donner quelque crédit à ceux qui pensaient que la gravité pouvait être essentielle à la matière, et donc à l'athéisme, Newton n'a jamais ouvertement reconnu la possibilité d'une telle idée. Vers la fin de sa vie, Newton s'est penché davantage vers une action à distance médiée par un éther immatériel. -/- SOMMAIRE: -/- Abstract Introduction Principia Correspondance avec Richard Bentley Questions de l'Opticks Conclusions Bibliographie -/- DOI: 10.13140/RG.2.2.31322.70080 . (shrink)

Una din cele mai disputate controverse privind prioritatea unor descoperiri științifice este cea privind legea gravitației universale, între Isaac Newton și Robert Hooke. În acest eseu extind o lucrare mai veche pe aceeași temă, ”Isaac Newton vs. Robert Hooke în legea gravitației universale”. Hooke l-a acuzat pe Newton de plagiat, preluându-i ideile exprimate în lucrările anterioare. În această lucrare încerc să arăt, pe baza unor analize anterioare, că ambii oameni de știință au greșit: Robert Hooke (...) pentru că teoria sa nu era în fond decât idei care nu s-ar fi materializat niciodată fără suportul matematic al lui Isaac Newton; iar acesta din urmă a greșit nerecunoscând niciun merit al lui Hooke în elaborarea teoriei gravitației. Mai mult, după moartea lui Hooke și preluarea prezidenției Societății Regale, Newton a înlăturat orice urmă din instituție a fostului președinte, Robert Hooke. De asemenea, La negarea contribuției lui Hooke a contribuit și statutul său social ”inferior”, fiind poreclit de contemporani ”mecanicul”, spre deosebire de Sir Isaac Newton cel nobil. Pentru aceasta detaliez acuzațiile și argumentele fiecăreia dintre părți, și cum a fost percepută această dispută de către contemporanii celor doi. Finalizez lucrarea cu concluziile desprinse din cuprins. (shrink)

The interpretative field on Newton's work has been widely discussed and, particularly, the subject of hypotheses has not been the exception. The aim of this paper is to show that the natural philosophy of Newton seemed, in principle, to reject the hypothesis, but it is not opposed to the formulation of these if we distinguish what kind of hypothesis we mean. Thus, I will show, first, how Newton develops its natural philosophy, and how he opposed to the (...) hypotheses. Then I will show that under certain conditions the hypotheses are accepted. And therefore, I conclude that the philosophy of Newton not radically rejects the hypothesis, but, on the contrary, he may use them for the scientific development, depending on what type of hypothesis is referred. (shrink)

Dans sa correspondance avec Richard Bentley, Newton a rejeté la possibilité d'une action à distance, bien qu'il l'ait acceptée en Principia. L’environnement introduit par Newton à la question 21 d'Opticks se compose d’une part de corps matériels extrêmement petits, séparés dans l’espace, et d’un principe actif non mécanique produisant et médiatisant les forces de répulsion entre ces corps. À la question 28, il a clairement fait valoir qu'un environnement mécanique devrait être rejeté. L'éther traverse les corps, il est (...) donc sans importance. DOI: 10.13140/RG.2.2.23101.41446. (shrink)

When Newton articulated the concept of absolute time in his treatise, Philosophae Naturalis Principia Mathematica (Mathematical Principles of Natural Philosophy), along with its correlate, absolute space, he did not present it as anything controversial. Whereas his references to attraction are accompanied by the self- protective caveats that typically signal an expectation of censure, the Scholium following Principia’s definitions is free of such remarks, instead elaborating his ideas as clarifications of concepts that, in some manner, we already possess. This is (...) not surprising. The germ of the concept emerged naturally from astronomers’ findings, and variants of it had already been formulated by other seventeenth century thinkers. Thus the novelty of Newton’s absolute time lay mainly in the use to which he put it. (shrink)

How does Newton approach the challenge of mechanizing gravity and, more broadly, natural philosophy? By adopting the simple machine tradition’s mathematical approach to a system’s co-varying parameters of change, he retains natural philosophy’s traditional goal while specifying it in a novel way as the search for impressed forces. He accordingly understands the physical world as a divinely created machine possessing intrinsically mathematical features, and mathematical methods as capable of identifying its real features. The gravitational force’s physical cause remains an (...) outstanding problem, however, as evidenced by Newton’s onetime reference to active principles as the “genuine principles of the mechanical philosophy”. (shrink)

Newton began his Principia with three Axiomata sive Leges Motus. We offer an interpretation of Newton’s dual label and investigate two tensions inherent in his account of laws. The first arises from the juxtaposition of Newton’s confidence in the certainty of his laws and his commitment to their variability and contingency. The second arises because Newton ascribes fundamental status both to the laws and to the bodies and forces they govern. We argue the first is resolvable, (...) but the second is not. However, the second tension shows that Newton conceives laws as formal causes of bodies and forces. This neo-Aristotelian conception goes missing in Kantian accounts of laws, as well as accounts that stress laws’ grounding in powers and capacities. (shrink)

This article investigates the relationship between Hume’s causal philosophy and Newton ’s philosophy of nature. I claim that Newton ’s experimentalist methodology in gravity research is an important background for understanding Hume’s conception of causality: Hume sees the relation of cause and effect as not being founded on a priori reasoning, similar to the way that Newton criticized non - empirical hypotheses about the properties of gravity. However, according to Hume’s criteria of causal inference, the law of (...) universal gravitation is not a complete causal law, since it does not include a reference either to contiguity or to temporal priority. It is still argued that because of the empirical success of Newton ’s theory—the law is a statement of an exceptionless repetition—Hume gives his support to it in interpreting gravity force instrumentally as if it bore a causal relation to motion. (shrink)

CAMILO, Bruno. Aspectos metafísicos na física de Newton: Deus. In: DUTRA, Luiz Henrique de Araújo; LUZ, Alexandre Meyer (org.). Temas de filosofia do conhecimento. Florianópolis: NEL/UFSC, 2011. p. 186-201. (Coleção rumos da epistemologia; 11). Através da análise do pensamento de Isaac Newton (1642-1727) encontramos os postulados metafísicos que fundamentam a sua mecânica natural. Ao deduzir causa de efeito, ele acreditava chegar a uma causa primeira de todas as coisas. A essa primeira causa de tudo, onde toda a (...) ordem e leis tiveram início, a qual para ele assume um caráter divino, Newton aponta para um Deus sábio e poderoso e responsável pela ordem inteligente e pela a harmonia das leis físicas e universais de tudo o que existe – Deus como criador e preservador da ordem do universo. Há ainda a analogia do conceito de Deus com o espaço e o tempo, na medida em que ambos comunicam infinitude e onipresença. Por fim, nas considerações finais apontarei a importância de Newton para a metafísica moderna e como os seus estudos contribuíram para uma visão posterior do universo e suas leis e do homem enquanto ser pensante. (shrink)

In this article, I deal with the role of hypothesis in the scientific methodology of Isaac Newton, Francis Bacon and René Descartes. The first paragraph is about hypothesis in Newton's lexicon, especially trying to understand the meaning of his famous hypotheses non fingo. The second paragraph deals with Bacon's methodology, arguing especially that his epis-temology was the first to propose an artificial way for inductive inferences, also giving up all hypothesis in science. The third paragraph shows how (...) Descartes, following Bacon's traces and reading his methodology in the light of the idea of a Mathesis Universalis based on mental evidence, structures a full hypothetical-deductive methodology, charging metaphysics with the analytical phase and depriving experiments of any role in it. The fourth paragraph, on Newton again, tries to understand Newton's specific account of hypothesis as an auxiliary phase in the scientific discovery, and what really differentiates Newton from his contemporaries, Boyle and Hooke. (shrink)

A critical discussion of J.B. Shank, 'Before Voltaire: the French Origins of "Newtonian" Mechanics,' University of Chicago Press, 2018.

The paper presents the notion of “Spirit of Nature” in Henry More and describes its position within More’s philosophical system. Through a thorough analysis, it tries to show in what respects it can be considered a scientific object and in what respects it cannot. In the second part of this paper, More’s “Spirit of Nature” is compared to Newton’s various attempts at presenting a metaphysical cause of the force of gravity, using the similarities between the two to see this (...) notorious problem of Newton scholarship in a new light. One thus sees that if Newton drew from Stoic and Neo-Platonic theories of aether or soul of the world, we need to fully acknowledge the fact that these substances were traditionally of a non-dualistic, half-corporeal, half-spiritual nature. Both More’s “Spirit of Nature” and Newton’s aether can thus be understood as different attempts at incorporating such a pneumatic theory into the framework of modern physics, as it was then being formed. (shrink)

As John Henry states, Newton simply wants to reaffirm the truth of God's omnipresence without directly involving him in the physics of the world system. Newton simply wants to distance himself from a Cartesian concept of God and convince the atheists that God is a real presence extended in the world. God must exist in space for the space to exist, but God does not only act through contact. Henry believes that Andrew Janiak and Hylarie Kochiras give us (...) a wrong picture of a Newton who believes in opportunism. Newton, Henry asserts, has always assumed that God acted through secondary causes: DOI: 10.13140/RG.2.2.35495.39846. (shrink)

A presentation of Hooke’s 1674 monograph introducing the idea of universal gravity was included in the Philosophical Transactions (Royal Society 1775) and subsequently several letters containing observations, including one of Huygens. But obviously, after the publication of Principia in 1687, Hooke’s priority in proposing universal gravitation was forgotten. Hooke, considered as a “mechanical genius” rather than a scientist, was often at a social disadvantage to Newton, the noble theorist, or Huygens. Hooke’s inferior social status did not allow him to (...) identify with “free and unconfin’d” gentlemen such as Boyle, for example. DOI: 10.13140/RG.2.2.13746.45763. (shrink)

In Newton’s correspondence with Richard Bentley, Newton rejected the possibility of remote action, even though he accepted it in the Principia. Practically, Newton’s natural philosophy is indissolubly linked to his conception of God. The knowledge of God seems to be essentially immutable, unlike the laws of nature that can be subjected to refining, revision and rejection procedures. As Newton later states in Opticks, the cause of gravity is an active principle in matter, but this active principle (...) is not an essential aspect of matter, but something that must have been added to matter by God, arguing in the same Query of Opticks even the need for divine intervention. DOI: 10.13140/RG.2.2.16732.44162 . (shrink)

L'interprétation des textes d'Isaac Newton a suscité une controverse à ce jour. L'un des débats les plus animés a trait à l'action entre deux corps distants l'un de l'autre (l'attraction gravitationnelle), et à la mesure dans laquelle Newton a impliqué Dieu dans ce cas. Pratiquement, la plupart des articles traitent quatre types d’attractions gravitationnelles dans le cas des corps distants : l’action directe à la distance en tant que propriété intrinsèque des corps au sens épicurien du terme (...) ; action directe à distance divinement médiée par Dieu ; action à distance médiée par un éther matériel ; ou action à distance médiée par un éther immatériel. DOI: 10.13140/RG.2.2.17564.33926. (shrink)

Different authors have attempted to clarify the aspects of remote action and God's involvement on the basis of textual investigations, mainly from the Mathematical Principles of Natural Philosophy, (Newton, 1999b) Newton's correspondence with Richard Bentley (1692/93), (Bentley 1693) and Queries that Newton introduced at the end of the Opticks book in the first three editions (between 1704 and 1721). (Newton 1952) DOI: 10.13140/RG.2.2.12870.11844/1.

Although Newton carefully eschews questions about gravity’s causal basis in the published Principia, the original version of his masterwork’s third book contains some intriguing causal language. “These forces,” he writes, “arise from the universal nature of matter.” Such remarks seem to assert knowledge of gravity’s cause, even that matter is capable of robust and distant action. Some commentators defend that interpretation of the text—a text whose proper interpretation is important since Newton’s reasons for suppressing it strongly suggest that (...) he continued to endorse its ideas. This article argues that the surface appearance of Newton’s causal language is deceptive. What does New- ton intend with his causal language if not a full causal hypothesis? His remarks actually indicate a way of considering the force mathematically, something he contrasts to the structure of the force as it really is in nature. In explaining that, he identifies a significant disjunction between the physical force itself and mathematical ways of considering it, and the text’s significance lies in its view of the force’s structure and in the questions raised about the relationship between mathematical representations and the physical world. (shrink)

Nimeni nu ştie sigur dacă amintirea lui Newton despre măr a fost corectă, dar perspectiva lui aceasta este. Filosofii au crezut încă de la greci că mişcarea “naturală” a stelelor, planetelor, Soarelui şi Lunei este circulară. Kepler a stabilit că orbitele sunt de fapt eliptice, dar a crezut că mişcările planetelor este dictată de către o “forţă divină” emanată de la Soare, iar Newton şi-a dat seama că aceeaşi forţă care face ca o piatră aruncată să cadă înapoi (...) pe Pământ, ţine şi planetele pe orbita Soarelui, şi Luna pe orbita Pământului. În 1687, Isaac Newton a publicat Principia, în care face ipoteza legii pătratelor inverse a gravitației universale. Aplicarea legii gravitației lui Newton a permis obținerea multor informații detaliate pe care le avem despre planetele din Sistemul Solar, masa Soarelui și detalii despre quasari; chiar și existența unei materii întunecate se deduce din legea gravitației lui Newton. Deși nu am călătorit pe toate planetele și nici pe Soare, cunoaștem masele lor. Aceste mase se obțin prin aplicarea legilor gravitației la caracteristicile măsurate ale orbitei. În spațiu un obiect își menține orbita datorită forței gravitaționale care acționează asupra ei. Planeta orbitează stelele, stelele orbitează în centre galactice, galaxiile orbitează un centru de masă în grupuri și clusterele orbitează în superclustere. CUPRINS: Gravitația - Istoria teoriei gravitației - - Revoluția științifică - - Teoria lui Newton a gravitației - - Principiul echivalenței - - Relativitatea generală - - Gravitația și mecanica cuantică - Aspecte specifice - - Gravitația Pământului - - Ecuațiile pentru un corp care cade aproape de suprafața Pământului - - Gravitația și astronomia - - Radiații gravitaționale - - Viteza gravitației - Anomalii și discrepanțe Istoria teoriei gravitației - Antichitate - Era modernă - - Teoria lui Newton despre gravitație - - Explicații mecanice ale gravitației - - Relativitatea generală - - Gravitația și mecanica cuantică Isaac Newton - Ortodoxia creștină - Dumnezeu ca maestru creator - Alte credințe - Scrieri Legea gravitaţiei universale a lui Newton - Istorie - Forma modernă - - Forma vectorială - - Comparaţie cu forţa electromagnetică - - Reticenţele lui Newton - Aspecte problematice - - Preocupări teoretice privind expresia lui Newton - - Observații care contravin formulei lui Newton - - Reticențele lui Newton - - Soluția lui Einstein Isaac Newton vs. Robert Hooke - Opera și revendicările lui Hooke - Opera și revendicările lui Newton - Recunoașterea lui Newton - Controversa modernă a priorității - Schopenhauer despre Newton și Hooke Acțiunea la distanță - Ipotezele eterului - Corespondența cu Richard Bentley - Concluzii Explicarea gravitației prin eter - Curenți - Presiune statică Constanta gravitațională universală, G Legea inversului pătratului în gravitație - Formula - Justificare - Gravitația Gravitaţia Pământului - Ecuațiile pentru un corp în cădere în apropiere de suprafața Pământului Greutatea și imponderabilitatea - Greutatea în mecanica newtoniană - Istorie - - Newton - Relativitatea Mareele și gravitația - Caracteristici - Constituienți - Istoria fizicii mareelor - Forțe - Ecuațiile de maree ale lui Laplace - Mareele oceanelor - - Amplitudine și ciclu - - Batimetrie - Mareea Pământului - - Forța fluxului - - Mareea corporală - - Ceilalți contribuabili ai mareelor Pământului - Mareea atmosferei Pământului - - Caracteristici generale - Mareele lunare - - Componenta principală lunară semi-diurnă Câmpul gravitațional - Mecanica clasică Gravitația în interiroul unei planete (Teorema carcasei) - Dovezile lui Newton - - Forța pe un punct în interiorul unei sfere goale - Modelul preliminar de referință al pământului (PREM) Referințe Despre autor - Nicolae Sfetcu - - De același autor - - Contact Editura - MultiMedia Publishing . (shrink)

Une présentation de la monographie de 1674 de Hooke présentant l'idée de la gravitation universelle est apparue dans Philosophical Transactions de 1674, et puis plusieurs lettres contenant des observations, dont celle de Huygens. Mais évidemment, après la publication du Principia en 1687, la priorité de Hooke dans la proposition de la gravitation universelle a été oubliée. Après avoir entendu parler de la demande de Hooke de reconnaître sa priorité, Newton a supprimé les nombreuses références à Hooke dans Principia. DOI: (...) 10.13140/RG.2.2.27734.40009. (shrink)

Practic, Newton vrea pur și simplu să reafirme adevărul omniprezenței lui Dumnezeu, fără să-l implice direct în fizica sistemului mondial. Newton dorește pur și simplu să se distanțeze de un concept cartezian al lui Dumnezeu și să-i convingă pe atei că Dumnezeu este o prezență reală extinsă în lume. Dumnezeu trebuie să existe în spațiu, pentru a exista, dar Dumnezeu nu acționează numai prin contact. Newton a presupus întotdeauna că Dumnezeu a acționat prin cauze secundare. DOI: 10.13140/RG.2.2.22468.78720.

Newton veut simplement réaffirmer la vérité sur l'omniprésence de Dieu sans l'impliquer directement dans la physique du système du monde. Newton veut se distancer d'un concept cartésien de Dieu et convaincre les athées que Dieu est une présence réelle dans le monde. Dieu doit exister dans l'espace pour exister l'espace, mais Dieu n'agit pas seulement par contact. Newton a toujours supposé que Dieu agît par le biais de causes secondaires. Dans l'édition de 1687 des Principes mathématiques de (...) la philosophie naturelle, Newton déclare clairement qu'il n'attribue pas de cause particulière à l'attraction gravitationnelle. DOI: 10.13140/RG.2.2.27735.42402 . (shrink)

Newton a sugerat, în timp, mai multe tipuri de eter care ar putea media acțiunea la distanță. Dar, consecvent ideii sale că nu va născoci ipoteze care nu se bazează pe dovezi experimentale, nu a promovat niciodată aceste sugestii la nivelul unor ipoteze științifice. Trebuia să împace mecaniciștii, astfel încât a mers pe ideea unui eter din particule atât de fine încât masa e neglijabilă (practic, un eter imaterial). Mediul pe care Newton l-a introdus în Interogarea 21 constă (...) din corpuri materiale extrem de mici care sunt separate spațial, pe de o parte, și din principiul activ non-mecanic care produce și mediază forțele repulsive dintre aceste corpuri, pe de altă parte. DOI: 10.13140/RG.2.2.30606.72002. (shrink)

Willem Jacob ’s Gravesande is widely remembered as a leading advocate of Isaac Newton’s work. In the first half of the eighteenth century, ’s Gravesande was arguably Europe’s most important proponent of what would become known as Newtonian physics. ’s Gravesande himself minimally described this discipline, which he called «physica», as studying empirical regularities mathematically while avoiding hypotheses. Commentators have as yet not progressed much beyond this view of ’s Gravesande’s physics. Therefore, much of its precise nature, its (...) methodology, and its relation to Newton’s actual work remains unclear. This article discusses one particular methodological element that ’s Gravesande himself often stressed in detail, namely the use of mathematics in philosophy and physics. In doing so, it takes exception to the claim that mathematics played only a minor role in ’s Gravesande’s work, a view put forward in recent historiography. Besides that, this article casts new light on the interpretation of ’s Gravesande’s philosophical notion of «mathematical reasoning», a notion that has remained somewhat obscure thus far. (shrink)

Dans une note intitulée « Un état vrai de l'affaire et la controverse entre Sr Isaak Newton et le Dr Robert Hooke comme priorité de cette noble hypothèse du mouvement des planètes autour du Soleil en tant que leurs centres » non publié au cours de sa vie, Hooke a décrit sa théorie de la gravité. Pour soutenir sa « priorité », Hooke cite ses conférences sur les mouvements planétaires du 23 mai 1666, « Une tentative de prouver le (...) mouvement de la Terre à partir d'observations » publiées en 1674 et la correspondance avec Isaac Newton en 1679. DOI: 10.13140/RG.2.2.26375.24485. (shrink)

This article interprets Newton's De gravitatione as presenting a reductive account of substance, on which divine and created substances are identified with their characteristic attributes, which are present in space. God is identical to the divine power to create, and mind to its characteristic power. Even bodies lack parts outside parts, for they are not constructed from regions of actual space, as some commentators suppose, but rather consist in powers alone, maintained in certain configurations by the divine will. This (...) interpretation thus specifies Newton's meaning when he writes that bodies subsist ‘through God alone’; yet bodies do qualify as substances, and divine providence does not extend so far as occasionalism. (shrink)

The purpose of this note consists of discrete rational reconstruction which took place during the years 1609-1630 and 1630-1666, ie, the year of the publication of their Astronomia Nova and the year of death of the great German astronomer Johannes Kepler, and the subsequent range from desperate to knowledge of these laws of planetary motion, by the English scientist Sir Isaac Newton.

Sir Isaac Newton (1642–1727) discovered a problem in theoretical physics that is still unresolved to this day. He recognized that the periodic forces of gravity produced by the planets of the solar system degrade their orbits over long time spans, to produce either collisions of planets, ejections of planets into interstellar space, or incineration in the Sun. Although the calculated effects may be small for a given instant of time, over millions of years those small effects accumulate to (...) produce problems of instability of the solar system. Fully aware of this situation, he therefore wrote: “. . . the Planets move one and the same way in Orbs concentrick, some inconsiderable Irregularities excepted, which may have arisen from the mutual Actions of Comets and Planets upon one another, and which will be apt to increase, till this System wants a Reformation.” Due to the fact that the various planets in the solar system gravitationally interact with one another and thus perturb the orbital paths they follow, Newton realized that the system was ultimately unstable and thus divine intervention was needed to restore the balance in the planetary orbits that we observe today. (shrink)

Modern science began as natural philosophy, an admixture of philosophy and science. It was then killed off by Newton, as a result of his claim to have derived his law of gravitation from the phenomena by induction. But this post-Newtonian conception of science, which holds that theories are accepted on the basis of evidence, is untenable, as the long-standing insolubility of the problem of induction indicates. Persistent acceptance of unified theories only in physics, when endless equally empirically successful disunified (...) rivals are available, means that physics makes a persistent, problematic metaphysical assumption about the universe: that all disunified theories are false. This assumption, precisely because it is problematic, needs to be explicitly articulated within physics, so that it can be critically assessed and, we may hope, improved. The outcome is a new conception of science—aim-oriented empiricism—that puts science and philosophy together again, and amounts to a modern version of natural philosophy. Furthermore, aim-oriented empiricism leads to the solution to the problem of induction. Natural philosophy pursued within the methodological framework of aim-oriented empiricism is shown to meet standards of intellectual rigour that science without metaphysics cannot meet. (shrink)

En las dos entregas anteriores abordamos el inicio de la evolución del pensamiento matemático, desde el uso de herramientas matemáticas para problemas de cálculo concreto en la antigua Babilonia, pasando por el inicio de las matemáticas abstractas, las demostraciones y el nacimiento de la “geometría por la geometría” desde la visión religioso-filosófica de Platón y los pitagóricos, hasta la síntesis de ambas visiones en las matemáticas de la India, China y el mundo árabe, que fue la puerta de entrada de (...) las matemáticas a Europa, alrededor del siglo XV. (shrink)

Um die menschliche Farbwahrnehmung zu durchleuchten und nach transkulturellen Invarianten oder Variationen zu fahnden, pflegen anglophone Forscher seit Gladstones Pionierstudie aus dem Jahr 1858 zu untersuchen, wie die Farbwörter in den Sprachen anderer Zeiten und Länder funktionieren. Während die beachtlichen Ergebnisse dieser Forschung aus neuerer Zeit sehr wohl ins Schwarze treffen könnten, ist ihre Methode kritisch zu sehen: Bei der Untersuchung fremder Sprachen und Wahrnehmungsweisen erscheint es unstatthaft, eine bestimmte Ordnung des Farbenraumes vorauszusetzen, die auf Newton zurückgeht und selbst (...) in der europäischen Wissenschaft nicht ohne Alternativen ist. (shrink)

In this paper I reconstruct the birth, blossoming and decline of an eighteenth century program, namely “Moral Newtonianism”. I reconstruct the interaction, or co-existence, of different levels: positive theories, methodology, worldviews and trace the presence of scattered items of the various levels in the work of Hume, Adam Smith, Adam Ferguson, Dugald Stewart. I highlight how Mirowski’s reconstruction of the interaction between physics and economics may be extended to the eighteenth century in an interesting way once the outdated reconstruction of (...) Adam Smith that has been adopted by Mirowski is updated. I show how general methodological ideas, such as the distinction between ultimate causes or essences and intermediate principles, that originated in a context where the issue was the interaction between natural science and theology, proved useful when transferred to social theory in encouraging a kind of “experimental” approach to social phenomena. I discuss finally the genesis of frozen metaphors such as equilibrium, circulation, and value, arguing that Canguilhem’s lesson – namely that scientific change is produced not only by similarity but also by opposition – may be applied also to the history of economic thought. I take as an example Adam Smith’s ‘discovery’ of social mechanisms vis-à-vis his sceptical mistrust of neo-Stoic and Platonic views of a world-order. (shrink)

In the mid-seventeenth century a movement of self-styled experimental philosophers emerged in Britain. Originating in the discipline of natural philosophy amongst Fellows of the fledgling Royal Society of London, it soon spread to medicine and by the eighteenth century had impacted moral and political philosophy and even aesthetics. Early modern experimental philosophers gave epistemic priority to observation and experiment over theorising and speculation. They decried the use of hypotheses and system-building without recourse to experiment and, in some quarters, developed a (...) philosophy of experiment. The movement spread to the Netherlands and France in the early eighteenth century and later impacted Germany. Its important role in early modern philosophy was subsequently eclipsed by the widespread adoption of the Kantian historiography of modern philosophy, which emphasised the distinction between rationalism and empiricism and had no place for the historical phenomenon of early modern experimental philosophy. The re-emergence of interest in early modern experimental philosophy roughly coincided with the development of contemporary x-phi and there are some important similarities between the two. (shrink)

This paper examines connections between concepts of space and extension on the one hand and immaterial spirits on the other, specifically the immanentist concept of spirits as present in rerum natura. Those holding an immanentist concept, such as Thomas Aquinas, typically understood spirits non-dimensionally as present by essence and power; and that concept was historically linked to holenmerism, the doctrine that the spirit is whole in every part. Yet as Aristotelian ideas about extension were challenged and an actual, infinite, dimensional (...) space readmitted, a dimensionalist concept of spirit became possible—that asserted by the mature Henry More, as he repudiated holenmerism. Despite More’s intentions, his dimensionalist concept opens the door to materialism, for supposing that spirits have parts outside parts implies that those parts could in principle be mapped onto the parts of divisible bodies. The specter of materialism broadens our interest in More’s unconventional ideas, for the question of whether other early modern thinkers, including Isaac Newton, followed More becomes a question of whether they too unwittingly helped usher in materialism. This paper shows that More’s attack upon holenmerism fails. He illegitimately injects his dimensionalist concept of spirit into the doctrine, failing to recognize it as a consequence of the non-dimensionalist concept of spirit, which in itself secures indivisibility. The interpretive consequence for Newton is that there is no prima facie reason to suppose that the charitable interpretation takes him to deny holenmerism. (shrink)

When it became uncool to speak of beauty with respect to pieces of art, physicists started claiming that their results are beautiful. They say, for example, that a theory's beauty speaks in favour of its truth, and that they strive to perform beautiful experiments. What does that mean? The notion cannot be defined. (It cannot be defined in the arts either). Therefore, I elucidate it with examples of optical experimentation. Desaguliers' white synthesis, for example, is more beautiful than Newton's, (...) and the many colourful syntheses done by Viennese painter Ingo Nussbaumer exemplify even greater beauty. Here are some criteria (which, of course, do not implement a decision procedure concerning beauty in experiments): cleanliness, simplicity, intellectual clarity, symmetry. Similar criteria are relevant to our aesthetical judgements about some pieces of music. So we can assume that our notion of beauty conserning art is related to the one conserning scientific experiments. (shrink)

This thesis develops a hermeneutic philosophy of science to provide insights into physics education. -/- Modernity cloaks the authentic character of modern physics whenever discoveries entertain us or we judge theory by its use. Those who justify physics education through an appeal to its utility, or who reject truth as an aspect of physics, relativists and constructivists, misunderstand the nature of physics. Demonstrations, not experiments, reveal the essence of physics as two characteristic engagements with truth. First, truth in its guise (...) as correspondence enables a human being to prepare for the distinctive event of physics. -/- Second, the event of physics occurs in human perception when someone forces a hidden reality to disclose an aspect of itself. Thus, the ground of physics is our human involvement with reality achieved by way of truth. -/- To support this account of physics, the thesis reports phenomenological investigations into Isaac Newton’s involvement with optics and a secondary school physics laboratory. These involve interpretations of Heidegger’s theory of beings, schema and signification. The project draws upon, and contributes to, the hermeneutic phenomenology of modern physics, a tradition in continental philosophy that begins with Immanuel Kant, and advances particularly from Martin Heidegger to Patrick Heelan. -/- The thesis advocates an ontological pedagogy for modern physics which has as its purpose each individual student’s engagement with reality and truth. Students may achieve this through demonstrations of phenomena that will enable them to dwell with physics, an experience that contrasts with their embroilment in modernity, and which perpetuates nature’s own science. (shrink)

The question of where the knowledge comes from when we conduct thought experiments has been one of the most fundamental issues discussed in the epistemological position of thought experiments. In this regard, Pierre Duhem shows a skeptical attitude on the subject by stating that thought experiments cannot be evaluated as real experiments or cannot be accepted as an alternative to real experiments. James R. Brown, on the other hand, states that thought experiments, which are not based on new experimental evidence (...) or logically derived from old data, called the Platonic thought experiment, provide intuitive access to a priori knowledge. Unlike Brown, John D. Norton strictly criticizes the idea that thought experiments provide mysterious access to the knowledge of the physical world, and states that thought experiments cannot provide knowledge that transcends empiricism. In the context of the NortonBrown debate, in this article, Brown's stance on thought experiments is supported by critically analyzing the thoughts put forward on the subject. -/- Düşünce deneylerini gerçekleştirdiğimizde sonucunda elde edilen bilginin nereden geldiği sorusu düşünce deneylerinin epistemolojik konumuna ilişkin tartışılan en temel konulardan bir tanesidir. Bu doğrultuda, Pierre Duhem düşünce deneylerinin gerçek deneyler ile aynı statüde değerlendirilemeyeceğini ve hatta düşünce deneylerinin gerçek deneylerin bir alternatifi olarak bile kabul edilemeyeceğini belirterek konuya ilişkin şüpheci bir tavır sergilemektedir. James R. Brown ise yeni deneysel kanıtlara dayanmayan ya da eski verilerden mantıksal olarak türetilmeyen, Platoncu düşünce deneyi olarak adlandırılan düşünce deneylerinin a priori bilgiye sezgisel erişim sağladığını ifade etmektedir. Brown’ın aksine, John D. Norton düşünce deneylerinin fiziksel dünyanın bilgisine gizemli bir erişim sağladığı yönündeki düşünceyi kesin bir dille eleştirmekte ve düşünce deneylerinin ampirizmi aşan bir bilgi sağlamasının mümkün olamayacağını ifade etmektedir. Norton-Brown tartışması çerçevesinde bu makalede, Brown'un düşünce deneylerine ilişkin tutumu, konuyla ilgili düşüncelerin eleştirel olarak analiz edilmesiyle desteklenmektedir. (shrink)

Teoreticienii au formulat un set de criterii fundamentale pe care orice teorie a gravitației ar trebui să le satisfacă, două pur teoretice și două care se bazează pe dovezi experimentale. Astfel, o teorie trebuie să fie: 1. completă (capabilă să analizeze din "primele principii" rezultatul oricărui experiment de interes); 2. auto-consistentă (predicția sa pentru rezultatul fiecărui experiment trebuie să fie unică); 3. relativistă (la limită când se neglijează gravitația în comparație cu alte interacțiuni fizice, legile non-gravitaționale ale fizicii trebuie să (...) se reducă la legile relativității speciale); 4. cu limita newtoniană corectă (în limitele câmpurilor gravitaționale slabe și ale mișcărilor lente, trebuie să reproducă legile lui Newton). DOI: 10.13140/RG.2.2.22012.90244. (shrink)

Hume’s criticisms of divine causation are insufficient because he does not respond to important philosophical positions that are defended by those whom he closely read. Hume’s arguments might work against the background of a Cartesian definition of body, or a Malebranchian conception of causation, or some defenses of occasionalism. At least, I will not here argue that they succeed or fail against those targets. Instead, I will lay out two major deficiencies in his arguments against divine causation. I call these (...) “deficiencies” because Hume does not adequately address live positions. This does not mean, of course, that there are not problems with these views or that Hume could not have given strong arguments against them. Rather, Hume’s arguments, which can seem comprehensive to the twenty-first century reader, are in fact not so. For the deficiencies discussed in this essay, I point to writers from Hume’s near context (many of whom we know he read carefully) who held the views not discussed, and I provide reasons why Hume seems not to have entertained these possibilities. I won’t distinguish between accidentally overlooking and actively ignoring. By drawing attention to these three deficiencies, I have two goals. The first is to demonstrate the diversity of seventeenth and early eighteenth century views on divine causation, especially among philosophers in England, Scotland, and Ireland, who are often ignored by philosophers today who, like Hume, focus on continental Cartesians while ignoring British dualists and vitalists. The second goal is to make today’s readers aware of shortcomings in Hume’s arguments to encourage productively contextual readings of Hume and his contemporaries. (shrink)

Based on Galileo's experiments, Newton develops the theory of gravity in his first book Philosophiæ Naturalis Principia Mathematica ("Principia") of 1686. Immediately after, Robert Hooke accused Newton of plagiarism, claiming that he unduly assumed his "notion" of "the rule of the decrease of Gravity, being reciprocally as the squares of the distances from the Center". But, according to Edmond Halley, Hooke agreed that "the demonstration of the curves generated by it" belongs entirely to Newton.

The subject of this essay-based dissertation is Hume’s natural philosophy. The dissertation consists of four separate essays and an introduction. These essays do not only treat Hume’s views on the topic of natural philosophy, but his views are placed into a broader context of history of philosophy and science, physics in particular. The introductory section outlines the historical context, shows how the individual essays are connected, expounds what kind of research methodology has been used, and encapsulates the research contributions of (...) the essays. The first essay treats Newton’s experimentalist methodology in gravity research and its relation to Hume’s causal philosophy. It is argued that Hume does not see the relation of cause and effect as being founded on a priori reasoning, similar to the way in which Newton criticized non-empirical hypotheses about the causal properties of gravity. Contrary to Hume’s rules of causation, the universal law does not include a reference either to contiguity or succession, but Hume accepts it in interpreting the force and the law of gravity instrumentally. The second article considers Newtonian and non-Newtonian elements in Hume more broadly. He is sympathetic to many prominently Newtonian themes in natural philosophy, such as experimentalism, critique of hypotheses, inductive proof, and the critique of Leibnizian principles of sufficient reason and intelligibility. However, Hume is not a Newtonian philosopher in many respects: his conceptions regarding space and time, the vacuum, the specifics of causation, the status of mechanism, and the reality of forces differ markedly from Newton’s related conceptions. The third article focuses on Hume’s Fork and the proper epistemic status of propositions of mixed mathematics. It is shown that the epistemic status of propositions of mixed mathematics, such as those concerning laws of nature, is that of matters of fact. The reason for this is that the propositions of mixed mathematics are dependent on the Uniformity Principle. The fourth article analyzes Einstein’s acknowledgement of Hume regarding special relativity. The views of the scientist and the philosopher are juxtaposed, and it is argued that there are two common points to be found in their writings, namely an empiricist theory of ideas and concepts and a relationist ontology regarding space and time. (shrink)

A fundamental problem in science is how to make logical inferences from scientific data. Mere data does not suffice since additional information is necessary to select a domain of models or hypotheses and thus determine the likelihood of each model or hypothesis. Thomas Bayes’ Theorem relates the data and prior information to posterior probabilities associated with differing models or hypotheses and thus is useful in identifying the roles played by the known data and the assumed prior information when making inferences. (...) Scientists, philosophers, and theologians accumulate knowledge when analyzing different aspects of reality and search for particular hypotheses or models to fit their respective subject matters. Of course, a main goal is then to integrate all kinds of knowledge into an all-encompassing worldview that would describe the whole of reality. A generous description of the whole of reality would span, in the order of complexity, from the purely physical to the supernatural. These two extreme aspects of reality are bridged by a nonphysical realm, which would include elements of life, man, consciousness, rationality, mental and mathematical abstractions, etc. An urgent problem in the theory of knowledge is what science is and what it is not. Albert Einstein’s notion of science in terms of sense perception is refined by defining operationally the data that makes up the subject matter of science. It is shown, for instance, that theological considerations included in the prior information assumed by Isaac Newton is irrelevant in relating the data logically to the model or hypothesis. In addition, the concepts of naturalism, intelligent design, and evolutionary theory are critically analyzed. Finally, Eugene P. Wigner’s suggestions concerning the nature of human consciousness, life, and the success of mathematics in the natural sciences is considered in the context of the creative power endowed in humans by God. (shrink)

This chapter presents a historical study of how science has developed and of how philosophical theories of many sorts – philosophy of science, theory of the understanding, and philosophical theology – both enable and constrain certain lines of development in scientific practice. Its topic is change in the legitimacy or acceptability of scientific explanation that invokes purposes, or ends; specifically in the argument from design, in the natural science field of physico-theology, around the start of the eighteenth century. ... The (...) context that produced physico-theology was clearly religious and political. It is unsurprising that a large body of Protestant intellectuals well-placed in a relatively peaceful society with a strong tradition of open speech, would develop links between science and critical discussion of both divinity and the Bible. There were also bounds to the discussion, as Newton, who chose to sit on the sidelines, knew well. Many others on Europe’s continent lived much more intimately with religious division as well as the reminder, in 1633, of Galileo’s failure to arrange a peaceable arrangement between science and religion. These aspects of the rise of physico-theology have not been the focus of this chapter, which has surveyed the philosophical and social origins found in the English context. Science, philosophy of science and other English philosophical currents – most particularly the theory of ideas and understanding that we are familiar with in its later development by John Locke – were formative for a field that might alternatively have been called ‘empirical natural theology.’ Prior shifts in religious sensibility that emptied the Book of Nature of much of its content also prepared the ground. Other philosophical and theological currents not discussed here – most notably theories of divine agency and predestination – and other philosophical trends – the rise of Spinoza’s challenge to such natural theology on the continent – also had both shaping and limiting influences upon the field. Finally, philosophers, including natural philosophers, did much more to promote physico-theology than just write about it: Boyle in particular provided a very important launch pad for the further development of an already healthy tradition of natural theology with his named lectureship, which drew the interest of others in the Royal Society, most notably Isaac Newton, and which spawned two of the most influential physico-theological tracts shortly before and shortly after the turn of the eighteenth century. (shrink)