- Polarization involves creating division or causing a group or something to be divided up into two opposing groups.
An example of polarization is when a controversial political figure causes the country to become sharply divided.
- the producing of polarity in something, or the acquiring of polarity
- the process or condition of being divided into two opposing groups
- Elec. a condition in which gases produced during electrolysis accumulate on and around the electrodes of an electrical cell and reduce the flow of current by setting up an opposing potential
- the condition of electromagnetic or other waves in which the transverse motion or field of the wave is confined to one plane or one direction
- the production of this condition
Origin: from polarize plush -ation
Used by arrangement with John Wiley & Sons, Inc.
- The production or condition of polarity, as:a. A process or state in which rays of light exhibit different properties in different directions, especially the state in which all the vibration takes place in one plane.b. The partial or complete polar separation of positive and negative electric charge in a nuclear, atomic, molecular, or chemical system.
- A concentration, as of groups, forces, or interests, about two conflicting or contrasting positions.
polarization - Computer Definition
The direction of the electric field vector of an electromagnetic wave. All electromagnetic waves have electric and magnetic fields that are perpendicular to the direction of propagation. The electric field and the magnetic fields are orthogonal, i.e., perpendicular to each other. The simplest graphical representation is of one field along the x-axis and one along the y-axis, with the direction of propagation plotted along the z-axis, as illustrated in Figure P-6. The electric and magnetic fields are at the same frequency, although their amplitude may not be the same and they may be out of phase. Polarization can be planar (linear), circular, or elliptical. If the emitter, i.e., transmitter, causes the wave to take place in one plane, the wave is said to be a plane-polarized wave. If the amplitude of the electric and magnetic fields is constant and the fields are in phase, the polarization is said to be linear and is graphically traced in a straight line. If the two component fields are of the same amplitude and exactly 90 degrees out of phase, polarization is said to be circular, rotating in either a clockwise or counterclockwise direction, depending on which field is ahead of the other. All other conditions create what is known as elliptical polarization.The design of an electromagnetic transmitter determines the polarization of the emitted signal, the propagation characteristics of the signal, and the design of the receiver.The signal from a transmitter begins as planar, or linear, although reflections and other interactions with physical matter can change the polarization.Vertical polarization is used in AM and FM radio, and horizontal polarization in television. Satellites and terrestrial microwave systems use alternating horizontal and vertical polarization in adjacent frequency bands, which results in orthogonal signals that minimize the potential for mutual interference.Automobile headlights are horizontally polarized to provide a better view of the road. Sunglasses are vertically polarized to block glare (i.e., reflection) from water and snow, which reflect sunlight on a horizontal plane. See also amplitude, frequency, phase, propagation, and sine wave.
Used by arrangement with John Wiley & Sons, Inc.
polarization - Cultural Definition
The direction in which the electrical field of an electromagnetic wave points.
- Reflected light, such as the light that produces glare on a sunny day, is polarized so that the electrical field is parallel to the ground. Some sunglasses are designed to take advantage of this property by blocking out that particular polarization while allowing other light to come through.
In politics, the grouping of opinions around two extremes: “As the debate continued, the union members were polarized into warring factions.”
polarization - Medical Definition
- The production or condition of polarity.
- A process or state in which rays of light exhibit different properties in different directions, especially the state in which all the vibration takes place in one plane.
- The partial or complete polar separation of positive and negative electric charge in a nuclear, atomic, molecular, or chemical system.
- The coating of an electrode with a thick layer of hydrogen bubbles, with the result that the flow of current is weakened or arrested.
- The development of differences in potential between two points in living tissues, as between the inside and outside of the cell wall.
polarization - Science Definition
- A condition in which transverse waves vibrate consistently in a single plane, or along a circle or ellipse. Electromagnetic radiation such as light is composed of transverse waves and can be polarized. Certain kinds of light filters, including sunglasses that reduce glare, work by filtering out light that is polarized in one direction.
- The displacement of positive and negative electric charge to opposite ends of a nuclear, atomic, molecular, or chemical system, especially by subjection to an electric field. Atoms and molecules have some inherent polarization.
- An increased resistance to the flow of current in a voltaic cell, caused by chemical reactions at the electrodes. Polarization results in a reduction of the electric potential across the voltaic cell.
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