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Encyclopedia > Physical property

A physical property is any aspect of an object or substance that can be measured or perceived without changing its identity. Physical properties can be intensive or extensive. An intensive property does not depend on the size or amount of matter in the object, while an extensive property does. In addition to extensiveness, properties can also be either isotropic if their values do not depend on the direction of observation or anisotropic otherwise. Physical properties are referred to as observables. It is not a modal property. Various meters Measurement is an observation that reduces an uncertainty expressed as a quantity. ... In psychology and the cognitive sciences, perception is the process of acquiring, interpreting, selecting, and organizing sensory information. ... In philosophy, identity is whatever makes an entity definable and recognizable, in terms of possessing a set of qualities or characteristics that distinguish it from entities of a different type. ... In physics and chemistry an intensive property (also called a bulk property) of a system is a physical property of the system that does not depend on the system size or the amount of material in the system. ... Isotropy (the opposite of anisotropy) is the property of being independent of direction. ... Look up anisotropy in Wiktionary, the free dictionary. ... In physics, particularly in quantum physics, a system observable is a property of the system state that can be determined by some sequence of physical operations. ... A modal property is a property representing possession of the qualities (especially mental qualities) required to do something or get something done. ...

Often, it is difficult to determine whether a given property is physical or not. Color, for example, can be "seen", however, what we perceive as color is really an interpretation of the reflective properties of a surface. In this sense, many ostensibly physical properties are termed as supervenient. A supervenient property is one which is actual (for dependence on the reflective properties of a surface is not simply imagined), but is secondary to some underlying reality. In philosophy, supervenience is a well-defined dependency relation between higher-level (. mental) and lower-level (. physical) properties. ...

This is similar to the way in which objects are supervenient on atomic structure. A "cup" might have the physical properties of mass, shape, color, temperature etc, but these properties are supervenient on the underlying atomic structure, which may in turn be supervenient on an underlying quantum structure.

In the common sense, physical properties can be separated from nonphysical properties. Typically a nonphysical property is associated with a living being. Anger and love are not things which are part of the mechanics of the universe, but terms we use to discuss mental states. Anger may be a (physiological and psychological) response to a perceived threat to self or important others, present, past, or future. ... Love is any of a number of emotions and experiences related to a sense of strong affection or profound oneness. ...

Literally, the physical properties of an object are defined traditionally in a Newtonian sense, the physical properties of an object are absorption, acceleration, angle, area, capacitance, concentration, conductance, conductivity, density, dielectric, displacement, distribution, efficacy, electric charge, electric current, electric field, electric potential, emission, energy, expansion, exposure, flow rate, fluidity, frequency, force, gravitation, impedance, inductance, intensity, irradiance, length, location, luminance, magnetic field, magnetic flux, mass, molality, moment, momentum, permeability, permittivity, power, pressure, radiance, resistance, spin, strength, substance, temperature, tension, thermal transfer, time, velocity, viscosity and volume. Note that there are more not listed here. In an Einstein-relative model, the physical properties of an object might differ. Classical mechanics is used for describing the motion of macroscopic objects, from projectiles to parts of machinery, as well as astronomical objects, such as spacecraft, planets, stars, and galaxies. ... Look up absorption in Wiktionary, the free dictionary. ... Acceleration is the time rate of change of velocity, and at any point on a velocity-time graph, it is given by the slope of the tangent to that point basicly. ... ∠, the angle symbol. ... Area is a physical quantity expressing the size of a part of a surface. ... Capacitance is a measure of the amount of electric charge stored (or separated) for a given electric potential. ... In chemistry, concentration is the measure of how much of a given substance there is mixed with another substance. ... Conductance can refer to: Electrical conductance, the reciprocal of electrical resistance. ... Electrical conductivity is a measure of how well a material accommodates the transport of electric charge. ... In physics, density is mass m per unit volume V. For the common case of a homogeneous substance, it is expressed as: where, in SI units: ρ (rho) is the density of the substance, measured in kg·m-3 m is the mass of the substance, measured in kg V is... A dielectric, or electrical insulator, is a substance that is highly resistant to electric current. ... Look up displacement in Wiktionary, the free dictionary. ... Look up distribution in Wiktionary, the free dictionary. ... Efficacy is the ability to produce a desired amount of a desired effect. ... Electric charge is a fundamental conserved property of some subatomic particles, which determines their electromagnetic interaction. ... Electric current is the flow (movement) of electric charge. ... In physics, the space surrounding an electric charge or in the presence of a time-varying magnetic field has a property called an electric field. ... This article does not cite any references or sources. ... In physics, emission is the process by which the energy of a photon is released by another entity, for example, by an atom whose valence electrons make a transition between two electronic energy levels. ... Expansion can have several meanings, including: In physics: Expansion of space In computer hardware: an Expansion card In computer programming: In-line expansion In computer gaming: an expansion pack See also: Wikipedia:Requests for expansion This is a disambiguation page — a navigational aid which lists other pages that might... Look up exposure in Wiktionary, the free dictionary. ... In fluid dynamics, the rate of fluid flow is the volume of fluid which passes through a given area per unit time. ... Viscosity is a measure of the resistance of a fluid to deformation under shear stress. ... FreQuency is a music video game developed by Harmonix and published by SCEI. It was released in November 2001. ... In physics, force is anything that can cause a massive body to accelerate. ... “Gravity” redirects here. ... In electrical engineering, Impedance is a measure of opposition to a sinusoidal electric current. ... Inductance (or electric inductance) is a measure of the amount of magnetic flux produced for a given electric current. ... In physics, intensity is a measure of the time-averaged energy flux. ... Irradiance, radiant emittance, and radiant exitance are radiometry terms for the power of electromagnetic radiation at a surface, per unit area. ... Look up length, width, breadth in Wiktionary, the free dictionary. ... Luminance (also called luminosity) is a photometric measure of the density of luminous intensity in a given direction. ... Magnetic field lines shown by iron filings In physics, a magnetic field is a solenoidal vector field in the space surrounding moving electric charges and magnetic dipoles, such as those in electric currents and magnets. ... Magnetic flux, represented by the Greek letter Φ (phi), is a measure of quantity of magnetism, taking account of the strength and the extent of a magnetic field. ... This article or section is in need of attention from an expert on the subject. ... This page refers to concentration in the chemical sense. ... Moment refers to either of two related concepts in mathematics and physics: Moment (physics) Moment (mathematics) See also Moment (magazine), a Jewish general publication. ... In classical mechanics, momentum (pl. ... Permeability has several meanings: In electromagnetism, permeability is the degree of magnetisation of a material in response to a magnetic field. ... Permittivity is a physical quantity that describes how an electric field affects and is affected by a dielectric medium and is determined by the ability of a material to polarize in response to an applied electric field, and thereby to cancel, partially, the field inside the material. ... In physics, power (symbol: P) is the rate at which work is performed or energy is transferred. ... The use of water pressure - the Captain Cook Memorial Jet in Lake Burley Griffin in Canberra, Australia. ... Radiance and spectral radiance are radiometric measures that describe the amount of light that passes through or is emitted from a particular area, and falls within a given solid angle in a specified direction. ... Electrical resistance is a measure of the degree to which an electrical component opposes the passage of current. ... The terms spin and SPIN have several meanings, including those primarily discussed as spinning: For spin in sub-atomic physics, see spin (physics) For the stalled aircraft maneuver or any of several forms of loss of control in aircraft, see spin (flight) For the periodical, see Spin Magazine For the... Look up strength in Wiktionary, the free dictionary. ... Look up substance in Wiktionary, the free dictionary. ... Fig. ... Tension may mean: In physics, tension is a force related to the stretching of a string or a similar object. ... In regards to printing a thermal transfer printer has a print-head containing many small resistive heating pins that on contact, depending on the type of thermal transfer printer, melt wax-based ink onto ordinary paper or burn dots onto special coated paper. ... A pocket watch, a device used to tell time Look up time in Wiktionary, the free dictionary. ... In physics, velocity is defined as the rate of change of displacement or the rate of displacement. ... Viscosity is a measure of the resistance of a fluid to deform under shear stress. ... The volume of a solid object is the three-dimensional concept of how much space it occupies, often quantified numerically. ... “Einstein” redirects here. ...

See also

  Results from FactBites:
SIRCh :: Physical Property Information (356 words)
Units and Fundamental Constants in Physics and Chemistry
Subvolume a: Units in Physics and Chemistry, 1991
Subvolume b: Fundamental Constants in Physics and Chemistry, 1992
Thermodynamic Information (3581 words)
Property data of 6,600 pure compounds and 24,000 mixtures: tables of PVT properties, phase equilibria, transport and surface properties, caloric properties, acoustic, and optical properties.
Although physical property data are published in many places, these are some of the journals that tend to publish articles focusing on experimental and calculated property data and thermodynamics.
Published property data are only as reliable as the researchers who reported them in the first place.
  More results at FactBites »



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