Physics Various examples of physical phenomena Physics is one of the oldest academic disciplines, perhaps the oldest through its inclusion of astronomy.[8] Over the last two millennia, physics was a part of natural philosophy along with chemistry, certain branches of mathematics, and biology, but during the Scientific Revolution in the 17th century, the natural sciences emerged as unique research programs in their own right.[b] Physics intersects with many interdisciplinary areas of research, such as biophysics and quantum chemistry, and the boundaries of physics are not rigidly defined. New ideas in physics often explain the fundamental mechanisms of other sciences[6] while opening new avenues of research in areas such as mathematics and philosophy. Physics also makes significant contributions through advances in new technologies that arise from theoretical breakthroughs. History Ancient astronomy Astronomy is the oldest of the natural sciences. Natural philosophy Classical physics Modern physics
Philosophy Study of general and fundamental questions Philosophy (from Greek: φιλοσοφία, philosophia, 'love of wisdom')[1][2] is the systematized study of general and fundamental questions, such as those about existence, reason, knowledge, values, mind, and language.[3][4][5] Such questions are often posed as problems[6][7] to be studied or resolved. Some sources claim the term was coined by Pythagoras (c. 570 – c. 495 BCE),[8][9] although this theory is disputed by some.[10][11][12] Philosophical methods include questioning, critical discussion, rational argument, and systematic presentation.[13][14][i] Historically, philosophy encompassed all bodies of knowledge and a practitioner was known as a philosopher.[15] From the time of Ancient Greek philosopher Aristotle to the 19th century, "natural philosophy" encompassed astronomy, medicine, and physics. For example, Newton's 1687 Mathematical Principles of Natural Philosophy later became classified as a book of physics. Definitions Western philosophy
Logic Logic (from the Ancient Greek: λογική, logike)[1] is the branch of philosophy concerned with the use and study of valid reasoning.[2][3] The study of logic also features prominently in mathematics and computer science. Logic is often divided into three parts: inductive reasoning, abductive reasoning, and deductive reasoning. The study of logic[edit] The concept of logical form is central to logic, it being held that the validity of an argument is determined by its logical form, not by its content. Informal logic is the study of natural language arguments. Logical form[edit] Main article: Logical form Logic is generally considered formal when it analyzes and represents the form of any valid argument type. This is called showing the logical form of the argument. Second, certain parts of the sentence must be replaced with schematic letters. That the concept of form is fundamental to logic was already recognized in ancient times. Deductive and inductive reasoning, and abductive inference[edit]
Philosophy of logic Study of the scope and nature of logic Different types of logic are often distinguished. Logic is usually understood as formal logic and is treated as such for most of this article. Formal logic is only interested in the form of arguments, expressed in a formal language, and focuses on deductive inferences. Informal logic, on the other hand, addresses a much wider range of arguments found also in natural language, which include non-deductive arguments. The philosophy of logic also investigates the nature and philosophical implications of the fundamental concepts of logic. The metaphysics of logic is concerned with the metaphysical status of the laws and objects of logic. Definition and related disciplines[edit] Nature of logic[edit] The term "logic" is based on the Greek word "logos", which is associated with various different senses, such as reason, discourse, or language. General characteristics[edit] There is wide agreement that logic is a normative discipline. Types of logics[edit]
Philosophy of mathematics The terms philosophy of mathematics and mathematical philosophy are frequently used interchangeably.[1] The latter, however, may be used to refer to several other areas of study. One refers to a project of formalizing a philosophical subject matter, say, aesthetics, ethics, logic, metaphysics, or theology, in a purportedly more exact and rigorous form, as for example the labors of scholastic theologians, or the systematic aims of Leibniz and Spinoza. Another refers to the working philosophy of an individual practitioner or a like-minded community of practicing mathematicians. Recurrent themes[edit] Recurrent themes include: What is the role of Mankind in developing mathematics? History[edit] The origin of mathematics is subject to argument. Many thinkers have contributed their ideas concerning the nature of mathematics. Greek philosophy on mathematics was strongly influenced by their study of geometry. 20th century[edit] Major themes[edit] Mathematical realism[edit] Platonism[edit] Some[who?]
Philosophy of mind Branch of philosophy Philosophy of mind is a branch of philosophy that studies the ontology and nature of the mind and its relationship with the body. The mind–body problem is a paradigmatic issue in philosophy of mind, although a number of other issues are addressed, such as the hard problem of consciousness and the nature of particular mental states.[1][2][3] Aspects of the mind that are studied include mental events, mental functions, mental properties, consciousness and its neural correlates, the ontology of the mind, the nature of cognition and of thought, and the relationship of the mind to the body. However, a number of issues have been recognized with non-reductive physicalism. Mind–body problem[edit] Perceptual experiences depend on stimuli that arrive at our various sensory organs from the external world, and these stimuli cause changes in our mental states, ultimately causing us to feel a sensation, which may be pleasant or unpleasant. Arguments for dualism[edit] Qualia[edit]
Philosophy of religion Branch of philosophy examining the concepts of religion The philosophy of religion differs from religious philosophy in that it seeks to discuss questions regarding the nature of religion as a whole, rather than examining the problems brought forth by a particular belief-system. It can be carried out dispassionately by those who identify as believers or non-believers.[3] Overview[edit] Philosopher William L. The term philosophy of religion did not come into general use in the West until the nineteenth century,[6] and most pre-modern and early modern philosophical works included a mixture of religious themes and non-religious philosophical questions. The philosophy of religion has been distinguished from theology by pointing out that, for theology, "its critical reflections are based on religious convictions".[8] Also, "theology is responsible to an authority that initiates its thinking, speaking, and witnessing ... Basic themes and problems[edit] Ultimate reality[edit] Monotheism[edit]
Philosophy of science Philosophy of science is a branch of philosophy concerned with the foundations, methods, and implications of science. The central questions concern what counts as science, the reliability of scientific theories, and the purpose of science. This discipline overlaps with metaphysics, ontology and epistemology, for example, when it explores the relationship between science and truth. There is no consensus on many central problems in philosophy of science, including whether science can reveal the truth about unobservable things and whether scientific reasoning can be justified at all. In addition to these general questions about science as a whole, philosophers of science consider problems that apply to particular sciences such as biology or physics. Today, some thinkers seek to ground science in axiomatic assumptions such as the uniformity of nature. Introduction[edit] Defining science[edit] Karl Popper c. 1980s Scientific explanation[edit] Justifying science[edit] The purpose of science[edit]