polarization

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polarization

 [po″lar-ĭ-za´shun]
1. the presence or absence of polarity.
2. the production of that condition in light in which its vibrations are parallel to each other in one plane or in circles and ellipses.
3. the separation of electric charge so that there is directionality of flow, as in a body, cell, atom, or molecule.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

po·lar·i·za·tion

(pō'lăr-i-zā'shŭn),
1. In electricity, coating of an electrode with a thick layer of hydrogen bubbles, with the result that the flow of current is weakened or arrested.
2. A change effected in a ray of light passing through certain media, whereby the transverse vibrations occur in one plane only, instead of in all planes as in an ordinary light ray.
3. Development of differences in potential between two points in living tissues, as between the inside and outside of a cell wall.
Farlex Partner Medical Dictionary © Farlex 2012

polarization

Cardiac pacing The condition of an electrode in which its electrical potential differs from an equilibrium potential–ie, no current flow
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.

po·lar·i·za·tion

(pō'lăr-ī-zā'shŭn)
1. electricity Coating of an electrode with a thick layer of hydrogen bubbles, with the result that the flow of current is weakened or arrested.
2. A change effected in a ray of light passing through certain media, whereby the transverse vibrations occur in one plane only, instead of in all planes as in an ordinary light ray.
3. Development of differences in potential between two points in living tissues, as between the inside and outside of a cell wall.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

polarization

the act of changing an ordinary light beam consisting of billions of wavetrains each vibrating in a different direction, to a beam in which only those wavetrains vibrating in a particular plane are allowed to continue in the beam which is then less bright.

Light from the sun is scattered by molecules in the upper atmosphere in such a way as to result in light arriving at the earth's surface being partially polarized. The extent of polarization at any point depends on the position of the sun, so there is a pattern of polarization of the sky for any particular position of the sun. Bees, and probably many other arthropods, are capable of navigating by this pattern when the sun is obscured, so long as some blue sky can be seen (see NAVIGATION). Polarization can be brought about by naturally occurring crystals such as calcite, or by Polaroid sheets.

Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005

Patient discussion about polarization

Q. Can bi-polar be treated with acupuncture and Chinese medicine? Any help would be appreciated. I am a bipolar. I always get side effects from the meds being prescribed by my psychiatrist. I feel better one day but the very next day I feel moody and have outbursts even on meds as if I am not after them. I wish to follow a different system of treatment. Can bi-polar be treated with acupuncture and Chinese medicine? Any help would be appreciated.

A. Do a lot of research before coming off your meds. You should consult your doctor about how to come off your meds safely. First arm yourself with information about what the effective treatments are and how to get those treatments.

Q. My brother-in-law named Jacob has bi-polar schizophrenia; please help us by giving some solution for this… My brother-in-law named Jacob has bi-polar schizophrenia; he is currently on his medication and takes them faithfully in a positive mood. We have a hard time communicating with each other and it's destroying our marriage, please help us by giving some solution for this…

Q. Is spending money irresponsibely a sign of impending manic attack? My 32 years-old husband is known to have bi-polar disorder, but for the last ten years he has been on lithium treatment and had no attacks. Last week he bought some very expensive things to our home, without asking me (we usually discuss these things before we do anything). Does this mean he’s getting a new manic attack? Other than that purchase everything else is normal, and he appears and behaves as usual. I don’t want to take him for the psychiatrist just for spending some money.

A. Spending money is not a unique character of bi-polar people... Maybe it was a bit less calculated action. If he has manic attack, usually there'll be more things that would tell you about it.

More discussions about polarization
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References in periodicals archive ?
In particular, the dipole-dipole interaction is much stronger between NPs located along the light polarization (i.e., x-axis) [1].
Table 2 resumes the ratio for the unstretched and the preoriented stretched specimens taken in two perpendicular laser light polarizations.
Ratio J(809)/J(841)] and J(973)/J(998) calculated for an unstretched ([[epsilon].sub.N] = 0%) and a preoriented stretched dumbbell-shape test specimen ([[epsilon].sub.N] = 200%) in two perpendicular light polarizations X(ZZ)X and X(YY)X.
By using two perpendicular laser light polarizations on a highly oriented, sample, we have selected specific Raman bands which are sensitive to the molecular orientation.
Having obtained the intensities for the vibrational levels for each of the two analyzers, we then used these data, together with the measured light polarization and the electron spectrometers' energy efficiency curves, to calculate the asymmetry parameters and branching ratios.
Apart from the usually used pulse area, that is, field strength, the laser phase is promising as an alternate control knob to coherently manipulate the biexciton state, which can be facilely implemented by changing the light polarization via a quarter-wave plate.
Next stage has been devoted to study of the input light polarization configuration on the grating formation process.
Thus, trimers can be used for precise control of light polarization on the nanoscale [43].
This state in a nano-particle on a film structure strongly depends on the incident light polarization, film thickness, and nanoparticle-film separation distance.
Photoemission, particularly light polarization dependent photoemission (1), (2), can be very successful in establishing that the highly dipole-ordered polymers, prepared by Langmuir Blodgett techniques (3), (4), have dipoles oriented along the surface normal, particularly at temperature well below room temperature (~100 K).
There are difficulties in obtaining X-ray diffraction (XRD) from PMVC thin films (10), while light polarization dependent photoemission and infrared spectroscopy are inconclusive as to the dipole ordering, because of the very low local point group symmetry (7).
In order to compare the difference on SPRs of two different light polarizations, i.e., the direction of incident wave is perpendicular to the nanochain axis (see the inset of Figure 2, longitudinal polarization) and the direction of incident wave is parallel to the nanochain axis (see the inset of Figure 1(a), transverse polarization).