Asked by Andy Blackwell Uncategorized
Why are polarization important?
We need you to answer this question!
Asked in Mechanical Engineering
What are the types of polarization in dielectric material?
Asked in Electronics Engineering
What is cross polarization?
Cross polarization is the polarization orthogonal to the desired polarization. For instance, if the fields from an antenna are meant to be horizontally polarized, the cross-polarization in this case is vertical polarization. If the polarization is Right Hand Circularly Polarized (RHCP), the cross-polarization is Left Hand Circularly Polarized (LHCP).
Asked in Electronics Engineering, Geometry, London
What is cross-polarization?
Answer In RF communications, there are basically 3 common polarizations. They are horizontal polarization, vertical polarization, and circular polarization. Use the link below on antenna theory and see some examples and gather more information. Basically, polarization describes how the E-field is moving when it leaves the antenna. In horizontal polarization the signal moves in a horizontal fashion (-). In vertical polarization the signal moves in a vertical fashion (|). In circular polarization the signal moves in a circular fashion (O) with either left-handed or right-handed rotation. Now, when you want to talk to someone using horizontal or vertical polarization you want to match their angle of polarization exactly for the strongest signal. Cross-polarization is radiation orthogonal to the desired polarization. For instance, the cross-polarization of a vertically polarized antenna is the horizontally polarized fields. This is important to know because when you are setting up something like a satellite connection. In order to allow more signals through the satellite transponder within a fixed bandwidth and with decreased interference, the satellite makers alternate the polarization between adjacent transponder channels. (-|-|-|-|-|-|). Two adjacent channels can be "shoved right up against each other" and will interfere in a minimal way if they are polarized oppositely. Since interference affects their customers, satellite vendors are very touchy about proper polarization, and monitor gaps, called "guard bands" to ensure that you are properly aligned.
Asked in Physics
Does a mirror polarize the 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 are : * Polarization by Transmission * Polarization by Reflection * Polarization by Refraction * Polarization by Scattering
Asked in Optics
What does polarization of light tell about the nature of light?
Asked in Shopping
Why vertical polarization cause short circuiting in receiver?
Asked in The Difference Between
What is the difference between electrical polarisation and dielectric polarisation?
in electric polarization ion is formed which have more tendency to form then magnetic polarization . in magnetic polarization just transfer of electron via flux . so the basic reason is that ion has more mobility constant then electron.so electric polarization is more faster then magnetic polarization.
Asked in Math and Arithmetic, Physics, Statistics, Algebra
How can you determine the polarization axis for a single sheet of Polaroid?
Asked in Optics
What does polarization demonstrate about the wave form of light?