A peculiar affection or condition of the rays of light or heat, in consequence of which they exhibit different properties in different directions.
The result of light being passed through a filter that makes the light travel in all different directions, therefore making different rays of the light behave differently from one another. The filter is called a polarizing filter.
In a given direction, the polarization of the wave radiated by the antenna. Alternatively, the polarization of a plane wave incident from the given direction which results in maximum available power at the antenna terminals.
a property of transverse waves, especially light waves, that indicates the orientation of the wave displacement with respect to a coordinate system.
The plane of the electric fields of the transmitted RF energy in relation to the earth's surface. Radar energy is vertically, horizontally, left or right circularly polarized.
The angle of rotation, either clockwise or counter-clockwise, of the oval shaped DirecPC Satellite dish.
When something get polarized this means it has an orientation or preferential direction. If we are talking about light we are refering to the orientation of the transvese oscillations. An object can be unpolarized, partially polarized , or plane (linearly) polarized.
Plane of vibration of the electrical field of a signal Different polarizations enable better frequency re-use
Embedded in the lens, this optically precise filter enhances visual acuity by eliminating extreme glare and reflections.
The use of specific filters to control the direction light travels. Effects are the reduction of glare and reflections and the saturation of colours, especially in landscapes.
A process that aligns a wave of light to oscillate in one dimension rather than two.
The orientation of the electric field of the radiation. Radiation transmitted from a dipole antenna has its electric field parallel to the antenna. The wave travels in a direction perpendicular to the antenna. The electric field of the radiation being transferred is perpendicular to the widest dimension of the rectangle.
causing the light waves to vibrate in two planes perpendicular to the direction of travel.
This wave phenomenon increases the capacity of a transmission channel by utilizing the signal's two perpendicular wave components.
The arrangement of electromagnetic waves so that all the planes in which the waves are oscillating are parallel to each other. A to F | G to L | M to R | S to Z
The orientation of the electromagnetic waves; can be linear (vertical or horizontal) and circular.
A polarized particle beam is a beam of particles whose spins are aligned in a particular direction. The polarization of the beam is the fraction of the particles with the desired alignment.
The process of confining the vibrations of the vector constituting a transverse wave to one direction. (Course Material/Ultrasonics/EquipmentTrans/ematshearwave.htm)
The orientation of the electric field component of a radio wave.
a process whereby a chemical film is applied to glass to reduce horizontal glare (i.e. reflection off of water or roadways).
Radio waves exhibit the property of polarization, which is the plane of their electrical fields. Polarization is typically referred to as being horizontal or vertical, but the actual polarization can be at any angle. Circular polarization is also possible. Receiving a horizontally polarized signal with an antenna oriented to be vertically polarized, or vice versa, will slightly reduce the amount of signal received.
The electric orientation of molecules in a piezoelectric material.
Restriction of the vibrations of the electromagnetic field to a single plane, rather that the innumerable planes rotating about the vector axis. Various forms of polarization include random, linear, vertical, horizontal, elliptical and circular.
the phenomenon in which waves of light or other radiation are restricted in direction of vibration
A term which refers to the way a wave of light moves. For instance, a linearly polarized beam of light may be thought of as "vibrating" up and down in a vertical, horizontal, or other tranverse direction. A beam of light which is not polarized is made up of vibrations in all directions.
A property of light in which the planes of vibration of the (electric field of the) light are at least partially aligned.
A satellite transmission signal has either a vertical, horizontal, or circular orientation; a satellite can be all vertical or all horizontal; if a satellite is cross-polarized, it can transmit both ways and therefore has twice the delivery capacity.
Characteristic of electromagnetic radiation where the electric-field vector of the wave energy is perpendicular to the main direction, or vector, of the electromagnetic beam.
The orientation of the electric and magnetic components of electromagnetic radiation waves.
The direction of the electric field vector in the lightwave.
The action or process of affecting radiation and especially light so that the vibrations of the wave assume a definite form.
The dimensional aspect(s) of an electromagnetic wave, e.g. linear, circular, elliptical, represented by two complex numbers
Orientation of the incident - and -field vectors with respect to the absorbing object.
The spatial orientation of the electromagnetic waves that make up a beam of light. Light in which the spatial orientation of the waves is not random is said to be polarized. Although most light sources, such as the sun, emit essentially unpolarized waves many physical processes such as scattering in the atmosphere and reflection off glossy surfaces impose a preferred polarization on light.
The alignment of the electric fields of emitted photons, which are generally emitted with random orientations.
for an atom, the displacement of the center of the negatively charged electron cloud relative to the positive nucleus, which is induced by an electric field.
polarization as a result of the displacement of anions and cations in opposite directions.
polarization resulting from the alignment (by rotation) of permanent electric dipole moments with an applied electric field.
Direction of the electric vector of an electromagnetic wave. Polarization is fixed for linear polarization or is rotating at right angles to the direction of propagation if circularly polarized.
Polarization allows several programmes to be fitted into the same frequency band.The signals from a satellite are transmitted either with linear (vertical or horizontal)polarization or circular(right or left)polarization.
The process of changing unpolarized waves into polarized waves, or waves that vibrate on only one plane. www.studyisland.com A light wave is an electromagnetic wave which travels through the vacuum of outer space. Light waves are produced by vibrating electric charges. It is possible to transform unpolarized light into polarized light. Polarized light waves are light waves in which the vibrations occur in a single plane. The process of transforming unpolarized light into polarized light is known as polarization. There are a variety of methods of polarizing light. The four methods discussed on this page are : Polarization by Transmission Polarization by Reflection Polarization by Refraction Polarization by Scattering http://www.physicsclassroom.com/Class/light/U12L1e.html
In most of the planned receivers, there will be two orthogonal polarizations (for each LO/IF chain) which get processed through separate amplifier chains and form independent correlator products. These I have designated as E and H plane, for their waveguide counterparts, since the actual sky polarization (whether linear EH or circular RL) depends upon the actual receiver design for a given band.
With respect to light radiation, the restriction of the vibrations of the magnetic or electric field vector to a single plane. In a beam of electromagnetic radiation, the polarization direction is the direction of the electric field vector (with no distinction between positive and negative as the field oscillates back and forth). The polarization vector is always in the plane at right angles to the beam direction. Near some given stationary point in space the polarization direction in the beam can vary at random (unpolarized beam), can remain constant (plane-polarized beam), or can have two coherent plane-polarized elements whose polarization directions make a right angle. In the latter case, depending on the amplitude of the two waves and their relative phase, the combined electric vector traces out an ellipse and the wave is said to be elliptically polarized. Elliptical and plane polarizations can be converted into each other by means of birefringent optical systems. Learn more about Polarization...
Refers to the fact that RF sine waves have spatial orientation to them as they travel in the air. The three types of polarization are horizontal, vertical, and circular.
The polarity of a radio signal's electric field. Transmit and receive antennas must have the same polarity for maximum receive power.
The orientation of the electric and magnetic vectors in a light wave. Many lasers produced linearly polarized light, which is important to their suitability for holography.
The ability of a lens to remove scattered or spurious light waves. Polarization eliminates annoying reflections off water, car windshields, and metal objects.
Positive and negative electric charges in an object (like an atom or a molecule) become separated from one another. This is usually done by placing the object in an electric field.
The direction of vibration of the electrical field vector of electromagnetic radiation. In radar systems polarization is either horizontal or vertical.1
reduces light reflected off the horizontal; especially effective when used around water, snow, wet or icy conditions, and in traffic.
That property of a radiated electromagnetic wave describing the time-varying direction and amplitude of the electric field vector: specifically, the figure traced as a function of time by the extremity of the vector at a fixed location in space, as observed along the direction of propagation.
The phenomenon that occurs to atoms and molecules that are subjected to an electric field where the positive and negative charges within the atom or molecule are pulled in opposite directions.
The state of electromagnetic radiation when the transverse oscillations take place in some regular manner, e.g., all in one plane.
Alignment of the electric and magnetic fields that make up an electromagnetic wave. Normally refers to the electric field. If all light waves have the same alignment, the light is polarized.
The orientation of a transmitted/received signal. Signals can have circular or linear polarization.
As regards light radiation; the restriction of the vibrations of the magnetic or electric field vector to a single plane.
The plane in which the radio waves propagate. Vertically polarized waves travel up and down while traveling forward. Horizontally polarized waves travel left and right while traveling forward.
A technique used by the satellite designer to increase the capacity of the satellite transmission channels by reusing the satellite transponder frequencies. In linear cross polarization schemes, half of the transponders beam their signals to earth in a vertically polarized mode; the other half horizontally polarize their down links. Although the two sets of frequencies overlap, they are 90 degree out of phase, and will not interfere with each other. To successfully receive and decode these signals on earth, the earth station must be outfitted with a properly polarized feedhorn to select the vertically or horizontally polarized signals as desired. In some installations, the feedhorn has the capability of receiving the vertical and horizontal transponder signals simultaneously, and routing them into separate LNAs for delivery to two or more satellite television receivers. Unlike most domestic satellites, the Intelsat series use a technique known as left-hand and right-hand circular polarization.
The restriction of the transverse vibrations of an electromagnetic wave to a fixed plane (horizontal or vertical) or a rotating plane (left hand or right hand).
The direction along which an electric or magnetic field is aligned. For example, the magnetic field from a loop of wire in the horizontal plane is perpendicular to the loop and is said to be polarized vertically.
in wave behavior, the situation where the oscillations are confined to move in only one direction (or plane)
The direction of the electric vector of the radiated signal.
In present C- and Ku-band systems, electromagnetic waves are polarized vertically or horizontally to reuse the same frequencies.
The sense of the wave radiated by an antenna. This can be horizontal, vertical, elliptical or circular (left or right hand circularity) depending on the design and application.
Use of polarizing filters to control the direction light travels. The effects are minimizing glare and reflections and saturation of colors, especially in landscapes.
A special property of light; light has three properties, brightness, color and polarization.
aintaining iber Polarization maintaining fiber (also called “PM fiber”) places stresses on the fiber core, creating two perpendicular transmission axes. If linearly polarized light is input to the fiber along one of these axes, the polarization state is maintained for the length of the fiber. Common types of PM fiber include “PANDA Fiber” and “TIGER fiber” type fibers. See also: fiber, polarization maintaining fiber assembly See links to product page
One frequency can be used for both sending and receiving data if the signals are polarized correctly. Since signals are analogue waves they act like light waves. Polarization of light, for example in sunglasses, removes all but one orientation of waves, so that say only vertical waves could be received. In telecommunications polarization works the same way. To communicate two independent signals on one frequency, the signals are cross-polarized. This means that they are polarized at right angles to one another. There are two types of polarization common in telecommunications: Linear and Circular. Linear polarization is used for Ku-Band signals, and Circular is used for C-Band. Polarizing the radio signals allows the same frequency to be used twice over the same coverage area while enabling the Earth Stations and the Satellites to discriminate between the two signals. This effectively doubles the amount of usable bandwidth, i.e. capacity, available.
A technique which uses - in a linear cross polarization scheme- electromagnetic waves with horizontal and vertical electric field vectors . It allows reusing the satellite transponder frequencies: half of the transponders beam their signals to earth in a vertically polarized mode; the other half horizontally polarize their down links. Because of geometric decoupling, both waves do not interfere with each other, although having the same frequency. The earth station must be fitted with a properly polarized feed-horn to select the vertically and / or horizontally polarized signals as desired.
In an antenna, the direction in which the electric field vector is aligned during the passage of at least one full cycle.
The plane an antenna system operates in; most repeaters are vertically polarized.
The alignment of the perpendicular electrical and magnetic fields that make up a light wave.
directional dependence of vibration for electromagnetic radiation (the polarization direction is regarded as the direction of the electric field).
light said to travel in a a wave motion along a straight path, vibrating in all directions. Polarization can be brought about with a polarizing filter which causes light to vibrate in a single plane only. Polarizing filters are used over camera lenses and light sources to reduce or remove specular reflection from the surface of objects.
The direction of the electric field in the lightwave. If the electric field of the lightwave is in the Y Axis, the light is said to be vertically polarized. If the electric field of the lightwave is in the X axis, the light is said to be horizontally polarized.
A characteristic of the electromagnetic wave. Four senses of polarization are used in satellite transmissions: horizontal; vertical; right-hand circular; and left-hand circular.
A property arising from the wave nature of light. Unpolarized or randomly polarized light does not have a preferred plane of oscillation. Polarized light consists of waves that are oscillating in a defined and predictable manner. For example, the oscillations of linearly polarized light are confined to a specific axis perpendicular to the propagation. Through the use of birefringent materials the linear polarization can be made to rotate along the propagation axis and give circularly or elliptically polarized light. Although common light sources may not be specified as polarized, many of these sources are actually slightly polarized due to reflections or other factors. Polarized lasers are equipped with special windows within the cavity to introduce linear polarization. When choosing a source, it is important to consider the effect that polarization may have on reflections from coatings and other polarization sensitive processes.
The process by which the transverse vibrations of light waves are oriented in a specific plane. Polarization may be obtained by using either transmitting or reflecting media.
In electrodynamics, polarization (also spelled polarisation) is the property of electromagnetic waves, such as light, that describes the direction of their transverse electric field. More generally, the polarization of a transverse wave describes the direction of oscillation in the plane perpendicular to the direction of travel. Longitudinal waves such as sound waves do not exhibit polarization, because for these waves the direction of oscillation is along the direction of travel.