Physics Physics Atomic, molecular, and optical physics is the study of matter-matter and light-matter interactions on the scale of single atoms or structures containing a few atoms. The three areas are grouped together because of their interrelationships, the similarity of methods used, and the commonality of the energy scales that are relevant. Physicists sometimes abbreviate the field as AMO physics. All three areas include both classical and quantum treatments. ...more on Wikipedia about "Atomic, molecular, and optical physics"
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 of classical physics break down and generally do not provide a correct description. Moreover, the classical theory of electromagnetic radiation is somewhat limited in its ability to provide correct descriptions, since light is inherently a quantum phenomenon. Unlike quantum physics, classical physics is generally characterized by the principle of complete determinism. ...more on Wikipedia about "Classical physics"
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. ...more on Wikipedia about "Computational physics"
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 systems at very low temperatures, the superconducting phase exhibited by conduction electrons in certain materials, and the ferromagnetic and antiferromagnetic phases of spins on atomic lattices. ...more on Wikipedia about "Condensed matter physics"
Electromagnetism is the physics of the electromagnetic field: a field, encompassing all of space, which exerts a force on those particles that possess the property of electric charge, and is in turn affected by the presence and motion of such particles. The term electrodynamics is sometimes used to refer to the combination of electromagnetism with mechanics, and deals with the effects of the electromagnetic field on the dynamic behavior of electrically charged particles. Electromagnetism encompasses various real-world electromagnetic phenomena. ...more on Wikipedia about "Electromagnetism"
Fading channels are mathematical models for the distortion that a carrier modulated telecommunication ...more on Wikipedia about "Fading"
Gloss is an optical property, which is based on the interaction of light with physical characteristics of a surface. It is actually the ability of a surface to reflect light into the specular direction. The factors that affects gloss are the refractive index of the material, the angle of incident light and the surface topography. ...more on Wikipedia about "Gloss (material appearance)" Don't hesitate to contact stuff on http://www.shortopedia.com Physics
* Newton's laws of motion - the three laws by Newton, publish in Philosophiae Naturalis Principia Mathematica in 1687 ...more on Wikipedia about "Glossary of classical physics"
Heliox is a gas that is composed of a mixture of helium (He) and oxygen (O2). The term Heliox generally describes a mixture that is 21% O2 (the same as air) and 79% He, although other mixtures are available. Heliox has been used in a medical context since the 1930s, and although the medical community adopted its use initially to alleviate the symptoms of upper airway obstruction, its range of medical uses has since expanded greatly, most of which are dependent on the low density of heliox. ...more on Wikipedia about "Heliox"
Regrettably, this period of inquiry into the nature of the world was eventually stifled by a tendency to accept the ideas of eminent philosophers, rather than to question and test those ideas. Pythagoras himself is said to have tried to suppress knowledge of the existence of irrational numbers, discovered by his own school, because they did not fit his number mysticism. For one thousand years following the destruction of the Library of Alexandria, Ptolemy's (not to be confused with the Egyptian Ptolemies) model of an Earth-centred universe in which the planets are assumed to each move in a small circle, called an epicycle, which in turn moves along a larger circle called a deferent, was accepted as absolute truth. ...more on Wikipedia about "History of physics"
The hydrogen line refers to the spectral line created by changes in the energy state of neutral hydrogen and occurs at 1420.40575 MHz, or a wavelength of around 21 cm. The line is used extensively in astronomy, particularly radio astronomy. ...more on Wikipedia about "Hydrogen line"
In electronics, and in physics more broadly, Joule heating or ohmic heating refers to the increase in temperature of a conductor as a result of resistance to an electrical current flowing through it. ...more on Wikipedia about "Joule heating"
Below is a list of basic topics in physics -- topics which will help the beginner become familiar with the field of physics. For a comprehensive list, see List of physics topics. ...more on Wikipedia about "List of basic physics topics"
Mathematical models are of great importance in physics. Physical theories are almost invariably expressed using mathematical models, and the mathematics involved is generally more complicated than in the other sciences. Different mathematical models use different geometries that are not necessarily entirely accurate descriptions of the geometry of the universe. Euclidean geometry is much used in classical physics, while special relativity and general relativity are examples of theories that use non-Euclidean geometry. ...more on Wikipedia about "Mathematical models in physics"
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Mechanics refers to: ...more on Wikipedia about "Mechanics"
Optical tweezers make use of a laser beam to provide a mechanical force (in the range of pico to femto Newtons) to physically move microscopic objects (nanometers to tens of micrometer) around with nanometer precision. Lately they have arosen a large interest for their applications to biology. ...more on Wikipedia about "Optical tweezers"
Particle physics is a branch of physics that studies the elementary constituents of matter and radiation, and the interactions between them. It is also called high energy physics, because many elementary particles do not occur under normal circumstances in nature, but can be created and detected during energetic collisions of other particles, as is done in particle accelerators. ...more on Wikipedia about "Particle physics"
Particle physics phenomenology is the part of theoretical ...more on Wikipedia about "Particle physics phenomenology"
A physical law, scientific law, or a law of nature is a scientific generalization based on empirical observations of physical behavior. They are typically conclusions based on the confirmation of hypotheses through repeated scientific experiments over many years, and which have become accepted universally within the scientific community. However, there are no strict guidelines as to how or when a scientific hypothesis becomes a scientific law. ...more on Wikipedia about "Physical law"
A physical phenomenon is a phenomenon that is describable by physics and involved with some form of matter, energy, or spacetime. Physical phenomena are usually regarded as, at least in theory, subjects of observation - Niels Bohr, one of the fathers of quantum mechanics, is quoted with saying the "no phenomenon is a phenomenon until it is an observed phenomenon." ...more on Wikipedia about "Physical phenomenon"
A physical system is a system that is comprised of matter and energy, about we are capable of gaining knowledge using the tools physics. In this context, a "system" is taken to mean "an interelated, interworking set of objects that operates independently". ...more on Wikipedia about "Physical system"
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. ** Physicists study a wide range of physical phenomena spanning all length scales: from the subatomic particles from which all ordinary (i.e., baryonic) matter is made ( particle physics) to the behavior of the material Universe as a whole ( cosmology) ...more on Wikipedia about "Physics"
Polymer physics is the field of physics associated to the study of polymers, their fluctuations, mechanical properties, as well as the kinetics of reactions involving degradation and polymerisation of polymers and monomers respectively. ...more on Wikipedia about "Polymer physics"
Quotidian physics refers to problems in physics that are solved using a dimensional structure of 3 space and one time variable. In other words, quotidian problems and solutions can be explored using a traditional system of 3 dimensions (length, width, depth) and a time factor (such as rate) to analyze physical phenomena. This is different from newer, more abstract issues in physics, such as multidimensional string theories or shifting concepts of time. ...more on Wikipedia about "Quotidian physics"
A repeal is the removal or reversal of a law. This is generally done when a law is no longer effective, or it is shown that a law is having far more negative consequences than were originally envisioned. ...more on Wikipedia about "Repeal" http://www.shortopedia.com moments.
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