الفلسفة الطبیعیة أو فلسفة الطبیعة (باللاتینیة: naturalis philosophia)، هو مصطلح یطلق على دراسة الطبیعة ومادیة الکون، والتی کانت مهیمنة قبل وضع العلم الحدیث، وهی تعتبر مقدمة العلوم الطبیعیة مثل الفیزیاء.
شکلت الفلسفة أو بشکل أکثر تحدیدًا الفلسفة الطبیعیة الأصل الذی تطور منه أشکال کثیرة من العلم. وفی أقدم الجامعات یشغل فی الوقت الحاضر کراسی الفلسفة الطبیعیة أساتذة الفیزیاء. المفاهیم الحدیثة للعلم والعلماء، یرجع تاریخها فقط إلى القرن التاسع عشر (وفق قاموس أکسفورد للغة الإنجلیزیة یرجع منشأ کلمة "عالم" إلى عام 1834). قبل ذلک، کانت کلمة "العلم" تعنی ببساطة "المعرفة"، ولم تکن تسمیة "عالم" موجودة. ومن أقدم کتابات ذلک المجال کتاب "المبادئ الریاضیة للفلسفة الطبیعیة" لإسحاق نیوتن الذی صدر فی عام 1687.
"Aristotle's Natural Philosophy", Stanford Encyclopedia of Philosophy
هذه بذرة مقالة عن شخصیات أو مصطلحات متعلقة بالفلسفة تحتاج للنمو والتحسین، فساهم فی إثرائها بالمشارکة فی تحریرها.
تصنیفات: تاریخ الفلسفةتاریخ الفیزیاءتاریخ العلوم
قس انNatural philosophy or the philosophy of nature (from Latin philosophia naturalis) was the study of nature and the physical universe that was dominant before the development of modern science. It is considered to be the precursor of natural sciences such as physics.
Forms of science historically developed out of philosophy or, more specifically, natural philosophy. At older universities, long-established Chairs of Natural Philosophy are nowadays occupied mainly by physics professors. Modern notions of science and scientists date only to the 19th century. The naturalist-theologian William Whewell was the one who coined the term "scientist". The Oxford English Dictionary dates the origin of the word to 1834. Before then, the word "science" simply meant knowledge and the label of scientist did not exist. Some examples of the term's usage are Isaac Newton's 1687 scientific treatise is known as The Mathematical Principles of Natural Philosophy and Lord Kelvin and Peter Guthrie Tait's 1867 treatise called Treatise on Natural Philosophy which helped define much of modern physics.
Origin and evolution of the term
The term natural philosophy preceded our current natural science (from the Latin, scientia, meaning "knowledge") when the subject of that knowledge or study is "the workings of nature". Natural philosophy pertains to the work of analysis and synthesis of common experience and argumentation to explain or describe nature—while, in the 16th century and earlier, science is used exclusively as a synonym for knowledge or study. The term science, as in natural science, gained its modern meaning when acquiring knowledge through experiments (special experiences) under the scientific method became its own specialized branch of study apart from natural philosophy. In the 16th century, Jacopo Zabarella was the first person appointed as a professor of Natural Philosophy at the University of Padua.
In the 14th and 15th centuries, natural philosophy referred to what is now physical science. From the mid-19th century, when it became increasingly unusual for scientists to contribute to both physics and chemistry, it just meant physics, and is still used in that sense in degree titles at the University of Oxford. Natural philosophy was distinguished from the other precursor of modern science, natural history, in that the former involved reasoning and explanations about nature (and after Galileo, quantitative reasoning), whereas the latter was essentially qualitative and descriptive.
Scope of natural philosophy
In Plato's earliest known dialogue, Charmides distinguishes between science or bodies of knowledge that produce a physical result, and those that do not. Natural philosophy has been categorized as a theoretical rather than a practical branch of philosophy (like ethics). Sciences that guide arts and draw on the philosophical knowledge of nature may produce practical results, but these subsidiary sciences (e.g., architecture or medicine) go beyond natural philosophy.
The study of natural philosophy seeks to explore the cosmos by any means necessary to understand the universe. Some ideas presupposes that change is a reality. Although this may seem obvious, there have been some philosophers who have denied the concept of metamorphosis, such as Plato's predecessor Parmenides and later Greek philosopher Sextus Empiricus, and perhaps some Eastern philosophers. George Santayana, in his Scepticism and Animal Faith, attempted to show that the reality of change cannot be proven. If his reasoning is sound, it follows that to be a physicist, one must restrain one's skepticism enough to trust one's senses, or else rely on anti-realism.
Beginning with Schelling, the mode of change studied in natural philosophy has been development, rather than evolution. Development is predictable directional change, while evolution is the irreversible accumulation of historically mediated information.
René Descartes' metaphysical system of Cartesian Dualism describes two kinds of substance: matter and mind. According to this system, everything that is "matter" is deterministic and natural—and so belongs to natural philosophy—and everything that is "mind" is volitional and non-natural, and falls outside the domain of philosophy of nature.
Branches and subject matter of natural philosophy
Major branches of natural philosophy include astronomy and cosmology, the study of nature on the grand scale; etiology, the study of (intrinsic and sometimes extrinsic) causes; the study of chance, probability and randomness; the study of elements; the study of the infinite and the unlimited (virtual or actual); the study of matter; mechanics, the study of translation of motion and change; the study of nature or the various sources of actions; the study of natural qualities; the study of physical quantities; the study of relations between physical entities; and the philosophy of space and time. (Adler, 1993)
History of natural philosophy
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See History of physics, History of chemistry and History of astronomy for the history of natural philosophy prior to the 17th century.
Man's mental engagement with nature certainly predates civilization and the record of history. Philosophical, specifically non-religious thought about the natural world goes back to ancient Greece. These lines of thought began before Socrates, who turned from his philosophical studies from speculations about nature to a consideration of man, viz., political philosophy. The thought of early philosophers such Parmenides, Heraclitus, and Democritus centered on the natural world. Plato followed Socrates in concentrating on man. It was Plato's student, Aristotle, who, in basing his thought on the natural world, returned empiricism to its primary place, while leaving room in the world for man. Martin Heidegger observes that Aristotle was the originator of conception of nature that prevailed in the Middle Ages into the modern era:
The Physics is a lecture in which he seeks to determine beings that arise on their own, τὰ φύσει ὄντα, with regard to their being. Aristotelian "physics" is different from what we mean today by this word. Aristotle's "physics" is philosophy, whereas modern physics is a positive science that presupposes a philosophy... This book determines the character of Western thinking even where modern thinking appears to think at odds with ancient thinking. That is, contemporary Western philosophy depends on Aristotle despite its disagreement him. Without Aristotle's Physics there would have been no Galileo.
Aristotle surveyed the thought of his predecessors and conceived of nature in a way that charted a middle course between their excesses.
Plato's world of eternal and unchanging Forms, imperfectly represented in matter by a divine Artisan, contrasts sharply with the various mechanistic Weltanschauungen, of which atomism was, by the fourth century at least, the most prominent… This debate was to persist throughout the ancient world. Atomistic mechanism got a shot in the arm from Epicurus… while the Stoics adopted a divine teleology… The choice seems simple: either show how a structured, regular world could arise out of undirected processes, or inject intelligence into the system. This was how Aristotle… when still a young acolyte of Plato, saw matters. Cicero… preserves Aristotle's own cave-image: if troglodytes were brought on a sudden into the upper world, they would immediately suppose it to have been intelligently arranged. But Aristotle grew to abandon this view; although he believes in a divine being, the Prime Mover is not the efficient cause of action in the Universe, and plays no part in constructing or arranging it... But, although he rejects the divine Artificer, Aristotle does not resort to a pure mechanism of random forces. Instead he seeks to find a middle way between the two positions, one which relies heavily on the notion of Nature, or phusis.
Aristotle recommended four causes as appropriate for the business of the natural philosopher, or physicist, “and if he refers his problems back to all of them, he will assign the ‘why’ in the way proper to his science—the matter, the form, the mover, [and] ‘that for the sake of which’”. While the vagrancies of the material cause are subject to circumstance, the formal, efficient and final cause often coincide because in natural kinds, the mature form and final cause are one and the same. The capacity to mature into a specimen of one's kind is directly acquired from “the primary source of motion”, i.e., from one's father, whose seed (sperma) conveys the essential nature (common to the species), as a hypothetical ratio.
Science has always been a systematic knowledge of causes. From the late Middle Ages and into the modern era, the tendency has been to narrow "science" to the consideration of efficient or agent causes, and those of a particular kind:
The action of an efficient cause may sometimes, but not always, be described in terms of quantitative force. The action of an artist on a block of clay, for instance, can be described in terms of how many pounds of pressure per square inch is exerted on it. The efficient causality of the teacher in directing the activity of the artist, however, cannot be so described… The final cause acts on the agent to influence or induce her to act. If the artist works "to make money," making money is in some way the cause of her action. But we cannot describe this influence in terms of quantitative force. The final cause acts, but it acts according to the mode of final causality, as an end or good that induces the efficient cause to act. The mode of causality proper to the final cause cannot itself be reduced to efficient causality, much less to the mode of efficient causality we call "force."
Figures in natural philosophy
This section requires expansion. (June 2008)
The scientific method has ancient precedents and Galileo exemplifies a mathematical understanding of nature which is the hallmark of modern natural scientists. The 19th century distinction of a scientific enterprise apart from traditional natural philosophy has its roots in prior centuries. Proposals for a more "inquisitive" and practical approach to the study of nature are notable in Francis Bacon, whose ardent convictions did much to popularize his insightful Baconian method. The late 17th century natural philosopher Robert Boyle wrote a seminal work on the distinction between physics and metaphysics called, A Free Enquiry into the Vulgarly Received Notion of Nature, as well as The Skeptical Chymist, after which the modern science of chemistry is named, (as distinct from proto-scientific studies of alchemy). These works of natural philosophy are representative of a departure from the medieval scholasticism taught in European universities, and anticipate in many ways, the developments which would lead to science as practiced in the modern sense. As Bacon would say, "vexing nature" to reveal "her" secrets, (scientific experimentation), rather than a mere reliance on largely historical, even anecdotal, observations of empirical phenomena, would come to be regarded as a defining characteristic of modern science, if not the very key to its success. Boyle's biographers, in their emphasis that he laid the foundations of modern chemistry, neglect how steadily he clung to the scholastic sciences in theory, practice and doctrine. However, he meticulously recorded observational detail on practical research, and subsequently advocated not only this practice, but its publication, both for successful and unsuccessful experiments, so as to validate individual claims by replication.
For sometimes we use the word nature for that Author of nature whom the schoolmen, harshly enough, call natura naturans, as when it is said that nature hath made man partly corporeal and partly immaterial. Sometimes we mean by the nature of a thing the essence, or that which the schoolmen scruple not to call the quiddity of a thing, namely, the attribute or attributes on whose score it is what it is, whether the thing be corporeal or not, as when we attempt to define the nature of an angel, or of a triangle, or of a fluid body, as such. Sometimes we take nature for an internal principle of motion, as when we say that a stone let fall in the air is by nature carried towards the centre of the earth, and, on the contrary, that fire or flame does naturally move upwards toward heaven. Sometimes we understand by nature the established course of things, as when we say that nature makes the night succeed the day, nature hath made respiration necessary to the life of men. Sometimes we take nature for an aggregate of powers belonging to a body, especially a living one, as when physicians say that nature is strong or weak or spent, or that in such or such diseases nature left to herself will do the cure. Sometimes we take nature for the universe, or system of the corporeal works of God, as when it is said of a phoenix, or a chimera, that there is no such thing in nature, i.e. in the world. And sometimes too, and that most commonly, we would express by nature a semi-deity or other strange kind of being, such as this discourse examines the notion of.
— Robert Boyle, A Free Enquiry into the Vulgarly Received Notion of Nature
The modern emphasis is less on a broad empiricism (one that includes passive observation of nature's activity), but on a narrow conception of the empirical concentrating on the control exercised through experimental (active) observation for the sake of control of nature. Nature is reduced to a passive recipient of human activity.
Current work in natural philosophy
This section requires expansion. (August 2011)
Especially since the mid-20th-century European crisis, researchers have begun recognizing the importance of looking at nature from a broader, philosophical perspective rather than the narrow, positivist approach that relies implicitly on a hidden, unexamined philosophy. One line of thought grows from the thought of Edmund Husserl, especially as expressed in The Crisis of European Sciences. Students of his such as Jacob Klein and Hans Jonas pursued his ideas.
Brian David Ellis has categorized more recent efforts as the "New Essentialism." Nancy Cartwright, David Oderberg, and John Dupré are some of the more prominent thinkers who can arguably be classed as generally adopting this open approach to the natural world.
The philosophical discussions of Ernest Mayr on the teleology of nature brought up again the issues that were dealt before by Aristotle (regarding the final cause) and Kant (regarding the reflecting judgment) 
History of science
^ Michael J. Crowe, Mechanics from Aristotle to Einstein (Santa Fe, NM: Green Lion Press, 2007), 11.
^ Martin Heidegger, The Principle of Reason, trans. Reginald Lilly, (Indiana University Press, 1991), 62-63.
^ See especially Physics, books I & II.
^ Hankinson, R. J. (1997). Cause and Explanation in Ancient Greek Thought. Oxford University Press. p. 125. ISBN 978-0-19-924656-4.
^ Aristotle, Physics II.7.
^ Michael J. Dodds, "Science, Causality and Divine Action: Classical Principles for Contemporary Challenges," CTNS Bulletin 21:1 .
^ Dodds 2001, p. 5.
^ More, Louis Trenchard (January 1941). "Boyle as Alchemist". Journal of the History of Ideas (University of Pennsylvania Press) 2 (1): 61–76. doi:10.2307/2707281. JSTOR 2707281.
^ Boyle, Robert; Stewart, M.A. (1991). Selected Philosophical Papers of Robert Boyle. HPC Classics Series. Hackett. pp. 176–177. ISBN 978-0-87220-122-4. LCCN 91025480.
^ E.A. Burtt, Metaphysical Foundations of Modern Science (Garden City, NY: Doubleday and Company, 1954), 227-230.
^ See especially his The Philosophy of Nature: A Guide to the New Essentialism 2002. ISBN 0-7735-2474-6
^ "Teleology and Randomness in the Development of Natural Science Research: Systems, Ontology and Evolution" Interthesis, v. 8, n. 2, p. 316-334, jul/dec.2011
Adler, Mortimer J. (1993). The Four Dimensions of Philosophy: Metaphysical, Moral, Objective, Categorical. Macmillan. ISBN 0-02-500574-X.
E.A. Burtt, Metaphysical Foundations of Modern Science (Garden City, NY: Doubleday and Company, 1954).
Philip Kitcher, Science, Truth, and Democracy. Oxford Studies in Philosophy of Science. Oxford; New York: Oxford University Press, 2001. LCCN:2001036144 ISBN 0-19-514583-6
Bertrand Russell, A History of Western Philosophy and Its Connection with Political and Social Circumstances from the Earliest Times to the Present Day (1945) Simon & Schuster, 1972.
Santayana, George (1923). Scepticism and Animal Faith. Dover Publications. pp. 27–41. ISBN 0-486-20236-4.
David Snoke, Natural Philosophy: A Survey of Physics and Western Thought. Access Research Network, 2003. ISBN 1-931796-25-4. 
"Aristotle's Natural Philosophy", Stanford Encyclopedia of Philosophy
Institute for the Study of Nature
"A Bigger Physics," a talk at MIT by Michael Augros
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