Physics (from the Greek, φυσικός (physikos), "natural", and φύσις (physis), "nature") is the science of the natural world dealing with the fundamental constituents of the universe, the forces they exert on one another, and the results produced by these forces. Sometimes in modern physics a more sophisticated approach is taken that incorporates elements of the three areas listed above; it relates to the laws of symmetry and conservation, such as those pertaining to energy, momentum, charge, and parity. [1] Phy ...

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Physics - Overview of physics research
Physics - Central theories Physics - Major fields of physics Physics - Related fields Physics - Theoretical and experimental physics Physics - Fringe theories
Physics - History Physics - Future directions Physics - Notes

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Physics - Central theories. While physics deals with a wide variety of systems, there are certain theories that are used by all physicists. Each of these theories is believed to be basically correct, within a certain domain of validity. For instance, the theory of classical mechanics accurately describes the motion of objects, provided they are much larger than atoms and moving at much less than the speed of light. These theories continue to be areas of active research; for instance, a remarkable aspect of classi ...

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Physics, Physics - Overview of physics research, Physics - Central theories, Physics - Major fields of physics, Physics - Related fields, Physics - Theoretical and experimental physics, Physics - Fringe theories, Physics - History, Physics - Future directions, Physics - Notes

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Main article: History of physics. See also Famous physicists and Nobel Prize in Physics. Since antiquity, people have tried to understand the behavior of matter: why unsupported objects drop to the ground, why different materials have different properties, and so forth. Also a mystery was the character of the universe, such as the form of the Earth and the behavior of celestial objects such as the Sun and the Moon. Several theories were proposed, most of which were wrong. These theories were largely couched in philosophical ter ...

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Physics, Physics - Overview of physics research, Physics - Central theories, Physics - Major fields of physics, Physics - Related fields, Physics - Theoretical and experimental physics, Physics - Fringe theories, Physics - History, Physics - Future directions, Physics - Notes

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Chemical physics is a subdiscipline of physics that investigates physicochemical phenomena using techniques from atomic and molecular physics and condensed matter physics; it is the branch of physics that studies chemical processes from the point of view of physics. While at the interface of physics and chemistry, chemical physics is distinct from physical chemistry in that it focuses more on the characteristic elements and theories of physics. Meanwhile, physical chemistry studies the physical nature of chemistry. The distinction between the two fields, nonetheless, is vague, and workers often practi ...

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Chemical physics - Related fields

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In physics, yank is the derivative of Force with respect to time or mass multiplied by jerk. Though not universally accepted as an official term for this quantity, the term yank is commonly used among physics enthusiasts. The units of yank are kilogram metres per second cubed (kg*m/s3) ...

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Classical physics is physics based on principles developed before the rise of quantum theory, including the special theory of relativity. (In contrast, modern physics refers to the physicist's world view wrought by the revolutionary quantum theory.) There are no restrictions on the application of classical principles, but, practically, the scale of classical physics is the level of isolated atoms and molecules on upwards, including the macroscopic and astronomical realm. Inside the atom and among atoms in a molecule, the laws o ...

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Cartoon physics is a joking reference to the fact that animation allows regular laws of physics to be ignored in humorous ways. For example, when a cartoon character runs off a cliff, gravity has no effect until the character notices. The phrase also reflects the fact that many of the most famous American animated cartoons, particularly those from the Warner Brothers and MGM studios, unconsciously developed a relatively consistent set of such "laws" ...

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Cartoon physics - History Cartoon physics - Examples Cartoon physics - Anvilology Cartoon physics - Cartoon collision physics

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Applied physics is physics that is intended for a particular technological or practical use, as for example in engineering, as opposed to basic research. This approach is similar to that of applied mathematics. Applied physics is rooted in the fundamental truths and basic concepts of the physical sciences but is concerned with the utilization of scientific principles in practical devices and systems, and in the application of physics in other areas of science. "Applied" is distinguished from "pure" by a subtle combination of factors s ...

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Applied physics - Areas of research

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In physics, VIRGO is a project of France and Italy, a Michelson laser interferometer that is analogous to LIGO. VIRGO physics - External link. Virgo - description ...

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VIRGO physics - External link

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Subtle bodies Causal plane: Causal body Mental plane: Mental body Astral plane: body, projection Etheric plane: Etheric body Physical plane: Physical body The 7 Worlds & the 7 Cosmic Planes The Seven-fold constitution of Man The Ten-fold constitution of Man Cosmology Sufi cosmology Tanazzulut Ray of Creation The Laws Three Centres Five Centres Plane (Dungeons & Dragons)   Inner Plane  
...

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In physics, compactification plays an important part in string theory. In string theory, compactification refers to "curling up" the extra dimensions (six in the superstring theory), usually on Calabi-Yau spaces or on orbifolds. The mechanism behind this type of compactification is described by the Kaluza-Klein theory. See also compact dimension. The formulation of more precise versions of the meaning of compactification in this context has been promoted by discoveries such as the mysterious duality.

The American Journal of Physics is a peer-reviewed scientific journal published by the American Association of Physics Teachers devoted to the educational and cultural aspects of physics. It is notable for its entertaining and accessible style. The Journal was established in 1933; the current editor is Jan Tobochnik. Editorial policy for the journal explicitly specifies that the subject matter should be of interest in an eductational setting. The editoral policy states: Contributions should treat subjects of ...

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Computational physics is the study and implementation of numerical algorithms in order to solve problems in physics for which a quantitative theory already exists. It is often regarded as a subdiscipline of theoretical physics. Physicists often have a very precise mathematical theory describing how a system will behave. Unfortunately, it is often the case that solving the theory's equations ab-initio in order to produce a useful prediction is not realistic. This is especially true with quantum mechanics, where only a handful of simple models can be solved ...

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Computational physics - Challenges in computational physics Computational physics - Applications of computational physics

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Physical therapy (also known as physiotherapy) is a health profession concerned with the assessment, diagnosis, and treatment of disease and disability through physical means. It is based upon principles of medical science, and is generally held to be within the sphere of conventional (rather than alternative) medicine. Physiotherapy is practiced by physiotherapists (also known as physical therapists, e.g. in the United States), though aspects may also be practiced under supervised delegation by physiotherapy assi ...

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Physical therapy - Scope of practice Physical therapy - History of physiotherapy Physical therapy - Assessment Physical therapy - Treatment
Physical therapy - Musculoskeletal physiotherapy Physical therapy - Cardiopulmonary physiotherapy Physical therapy - Neurological physiotherapy
Physical therapy - Physiotherapy education
Physical therapy - Qualifications in the United States

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Physical anthropology, sometimes called "biological anthropology", studies the mechanisms of biological evolution, genetic inheritance, human adaptability and variation, primatology, primate morphology, and the fossil record of human evolution. See also: Race. Physical anthropology developed in the 19th century, prior to the rise of Charles Darwin's theory of natural selection, also known as the theory of evolution, and Gregor Mendel's theory of genetics. Physical anthropology was so called because all of its data was physical ...

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Physical anthropology - Branches Physical anthropology - Renowned paleoanthropologists

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Causality describes the relationship between causes and effects, and is fundamental to all natural science, especially physics. It is also studied from the perspectives of philosophy, computer science, and statistics. In classical physics, it was assumed that all events are caused by earlier ones according to the known laws of nature, culminating in Pierre-Simon Laplace's claim that if the current state of the world would be known with precision, it could be computed for any time in the futu ...

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Causality physics - Causal contact Causality physics - Physical causality

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Coherence is a property of waves that measures the ability of the waves to interfere with each other. Coherence physics - Explanation. Two waves that are coherent can be combined to produce an unmoving distribution of constructive and destructive interference (a visible interference pattern) depending on the relative phase of the waves at their meeting point. When combined, waves that are incoherent produce rapidly moving areas of constructive and destructive interference and therefore ...

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Coherence physics - Explanation Coherence physics - Full coherence Coherence physics - Temporal coherence Coherence physics - Spatial coherence Coherence physics - Quantum coherence

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Condensed matter physics is the field of physics that deals with the macroscopic physical properties of matter. In particular, it is concerned with the "condensed" phases that appear whenever the number of constituents in a system is extremely large and the interactions between the constituents are strong. The most familiar examples of condensed phases are solids and liquids, which arise from the electric force between atoms. More exotic condensed phases include the superfluid and the Bose-Einstein condensate found in certain atomic s ...

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Condensed matter physics - Topics in condensed matter physics

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In scattering, a differential cross section is defined by the probability to observe a scattered particle in a given quantum state per solid angle unit (i.e. within a given cone of observation) if the target is irradiated by a flux of one particle per surface unit: The integral cross section is the integral of the differential cross section on the whole sphere of observation (4π steradian): A cross section is therefore a measure of the effective surface ...

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Cross section physics - Relation to the S matrix Cross section physics - Nuclear physics Cross section physics - Radar Cross section physics - Bibliography

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