polar

Definitions

  • Two polar bears with a seal they have caught
    Two polar bears with a seal they have caught
  • WordNet 3.6
    • adj polar having a pair of equal and opposite charges
    • adj polar being of crucial importance "a pivotal event","Its pivotal location has also exposed it to periodic invasions"- Henry Kissinger","the polar events of this study","a polar principal"
    • adj polar extremely cold "an arctic climate","a frigid day","gelid waters of the North Atlantic","glacial winds","icy hands","polar weather"
    • adj polar characterized by opposite extremes; completely opposed "in diametric contradiction to his claims","diametrical (or opposite) points of view","opposite meanings","extreme and indefensible polar positions"
    • adj polar of or existing at or near a geographical pole or within the Arctic or Antarctic Circles "polar regions"
    • adj polar located at or near or coming from the earth's poles "polar diameter","polar zone","a polar air mass","Antarctica is the only polar continent"
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Additional illustrations & photos:

Multi-polar dynamo Multi-polar dynamo
Polar Bear Polar Bear
POLAR ADVANCE OF THE NATIONAL STANDARDS POLAR ADVANCE OF THE NATIONAL STANDARDS
POLAR TRAGEDY POLAR TRAGEDY

Webster's Revised Unabridged Dictionary
  • Interesting fact: In the last 30 years, only seven people have been killed by a polar bear in Canada
    • Polar Of or pertaining to one of the poles of the earth, or of a sphere; situated near, or proceeding from, one of the poles; as, polar regions; polar seas; polar winds.
    • Polar Of or pertaining to the magnetic pole, or to the point to which the magnetic needle is directed.
    • Polar (Geom) Pertaining to, reckoned from, or having a common radiating point; as, polar coördinates.
    • n Polar (Conic Sections) The right line drawn through the two points of contact of the two tangents drawn from a given point to a given conic section. The given point is called the pole of the line. If the given point lies within the curve so that the two tangents become imaginary, there is still a real polar line which does not meet the curve, but which possesses other properties of the polar. Thus the focus and directrix are pole and polar. There are also poles and polar curves to curves of higher degree than the second, and poles and polar planes to surfaces of the second degree.
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Century Dictionary and Cyclopedia
  • Interesting fact: When a polar bear cub is born, it can not see or hear. It takes approximately a month for the cub to start to see and hear
    • polar Of or pertaining to a pole or the poles of a sphere. Of or pertaining to either extremity of the axis round which the earth, or any other sphere, revolves
    • polar Proceeding, issuing from, or found in the regions near the poles of the earth or of the heavens: as, the polar ocean; a polar bear.
    • polar Pertaining to a magnetic pole or poles; pertaining to the points of a body at which its attractive or repulsive energy is concentrated.
    • polar In anatomy, having poles in any way distinguished, as a cell: said especially of ovum-cells and nerve-cells. There may be one, two, or several poles, when the cell is distinguished as unipolar, bipolar, or multipolar.
    • polar In higher geom., reciprocal to a pole; of the nature of a polar. See II.
    • n polar A plane curve whose point-equation is derived from that of another plane curve (with respect to which it is said to be a polar) by operating one or more times (according as it is first, second, etc., polar) with the symbol x′ . d/ d x + y'. d/ d y + z'. d/ d z, where x', y', z' are the trilinear coördinates of a fixed point (of which the curve is said to be a polar). The first polar of a point with respect to a curve is a curve of the next lower order, cutting the primitive curve at all the points of tangency of tangents to the primitive from the fixed point, as well as at all the nodes of the primitive, and tangent to the primitive at every cusp of the latter. Thus, the polar of a point with respect to a conic is simply the straight line joining the points of tangency of tangents from that point to the conic. The harmonic mean of the distances from the fixed point, measured along any given radius of the intersections of any polar of that point, is the same as that of the distances of the intersections of the primitive curve; and the same is equally true of products of pairs or triplets or any number of intersections. In a generalized sense, mathematicians speak of a polar of a curve with respect to another curve: if the tangential equation of the first curve is (a, b, c, … u, v, w), and the pointequation of the second curve is (A, B, C, … x, y, z), where m ⟩ s, then the polar of the first with respect to the second is But if s ⟩ m, the polar of the second curve with respect to the first is
    • polar Having opposite properties at its two ends.
    • n polar A great circle two of whose points are each a quadrant from a given point: it is the polar of the given point.
    • n polar Given a trihedral; to each face from the vertex erect a perpendicular ray on the same side as the third edge; the trihedral they form is the polar of the given one.
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Chambers's Twentieth Century Dictionary
  • Interesting fact: Polar bears can smell seals who are 20 miles away
    • adj Polar pō′lar pertaining to, or situated near, either of the poles: pertaining to the magnetic poles: having a common meeting-point
    • n Polar (geom.) the line joining the points of contact, of tangents drawn to meet a curve from a point called the pole of the line
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Etymology

Webster's Revised Unabridged Dictionary
Cf. F. polaire,. See Pole of the earth

Usage

In literature:

The vessel passed through Robeson Channel into the polar ocean, reaching 82 deg.
"Wealth of the World's Waste Places and Oceania" by Jewett Castello Gilson
To describe the appearance of the Polar bear would be superfluous.
"Quadrupeds, What They Are and Where Found" by Mayne Reid
It may be proper, in this place, to spend a few words upon electrical polarization in general.
"A Newly Discovered System of Electrical Medication" by Daniel Clark
Thus in Yakoutsk there was only one man (a priest) who had been at the coast of the Polar Sea.
"The Voyage of the Vega round Asia and Europe, Volume I and Volume II" by A.E. Nordenskieold
The latter is a simple unpolar force, while the former is duplex or polar.
"Fragments of science, V. 1-2" by John Tyndall
The equatorial diameter of every planet is greater than its polar diameter, and the same truth applies to the sun.
"Aether and Gravitation" by William George Hooper
Here they made enquiries of a polar bear.
"Seven Little People and their Friends" by Horace Elisha Scudder
My device simply utilizes spatial inertia by polarizing it against the matter inertia of the ship, that's all.
"By Proxy" by Gordon Randall Garrett
Polar bear, skeleton of, 174; feet of, 178.
"Darwin, and After Darwin (Vol. 1 and 3, of 3)" by George John Romanes
There are no berries or fruits there for the polar bear to eat; so he has to live on fish, and seal, which is a water animal.
"The Wonders of the Jungle" by Prince Sarath Ghosh
The size of the polar cap diminished from 4,680 kilometers to 840.
"Astronomy for Amateurs" by Camille Flammarion
Nothing in Italy, nothing in the Tropics, equals the magnificence of the Polar skies.
"Northern Travel" by Bayard Taylor
Among these we may mention the foxes, the polar bears, and the seals.
"Domesticated Animals" by Nathaniel Southgate Shaler
THE POLAR HARE AND GREAT SNOWY OWL.
"Popular Adventure Tales" by Mayne Reid
One day I caught Mr. Polar Bear in a good humour, so that he was actually willing to talk to me.
"The Children's Book of London" by Geraldine Edith Mitton
Take your rifle, I see there are Polar bears prowling over there among the icebergs.
"Two Maiden Aunts" by Mary H. Debenham
By this means the body is enabled to endure tropical heat and polar cold.
"A Treatise on Anatomy, Physiology, and Hygiene (Revised Edition)" by Calvin Cutter
If the electron stream in it is reversed the "polarity" is reversed.
"Letters of a Radio-Engineer to His Son" by John Mills
The three polar bodies and the egg are comparable to the four sperms.
"A Critique of the Theory of Evolution" by Thomas Hunt Morgan
Check for polarization as well as contact.
"The Scarlet Lake Mystery" by Harold Leland Goodwin
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In poetry:

No polar compass guides me,
On whatever course I stand
Assured to find my haven
When I least expect the land.
"The Quiet Home" by Ernest Jones
His spears are sharp--they shine like steel;
He hunts the walrus and the seal.
Often, when he has time to spare,
He hunts the white or polar bear.
"Little People: An Alphabet" by Thomas William Hodgson Crosland
My queen is wan as the Polar snows.
Her host is a rout of specters.
But I gave her Youth like a burning rose,
And her age shall not lack protectors!
"The Retort Discourteous" by Stephen Vincent Benet
Lur'd by the light that gleams afar,
With fainting steps these cliffs I prest :--
O! may it prove a polar star,
And guide to pity's shelt'ring breast!
"The Harp. A Legendary Tale. In Two Parts" by Hector MacNeill
Strike and smoothe, for my decks are drums,
Sing through the water-spoken prow
The octopus walking into her limbs
The polar eagle with his tread of snow.
"Ballad Of The Long-Legged Bait" by Dylan Thomas
We was wrecked last March, in a Polar storm
—Ah-way O, to me O—
And we asked the old cripple if his feet was warm—
Sing, my bullies, let the bullgine run.
"The Big Black Trawler" by Alfred Noyes

In news:

Polar Bear Cub Delights Fans In His Debut.
Polar Tank Trailer LLC and the International Associations of Machinists and Aerospace Workers (IAM) union have reached an agreement on a new five-year labor contract .
The agreement was ratified December 19 through a majority vote by IAM members at Polar's manufacturing facility in Opole MN.
But each year, the polar bears struggle for extended periods on dwindling fat reserves, waiting for the opportunity to hunt on sea ice that takes longer to freeze.
Male polar bears can be two to three times larger than female polar bears.
I see my first polar bear from a distance of 300 feet - straight down.
Mid-Incomers Suffer in Polarized US Job Market: Economy.
As we watch corporate America stagger financially, and the polarized politicians try to respond, there is something else going on that we all need to be aware of.
The topic of the Nov 17 Forte Forum is "Barry Nicholls Goes Polar.".
Families not allowed on Metra 's Polar Express.
More than 100 kids and their parents were left out in the cold by Metra 's Polar Express.
Ice cores, glaciers and the cruel polar winds — the Cold War for Greenland featured the fiercest of foes.
Seventeen Evergreen Polarity Song Steady On, Scientist.
17th Annual Polar Plunge at Lake of the Ozarks .
This Saturday marks the 17th Annual Polar Plunge at the Lake of the Ozarks .
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In science:

To obtain a Hilbert space of sections, one needs additionally to fix a polarization of M , i.e. a Lagrangean sub-bundle L of T M , and we define polarized sections to be those satisfying ∇v s = 0 when v is tangent to L.
Universality and scaling of zeros on symplectic manifolds
Given τ an F -polarized section of L, we want to define a continuous family τt of sections of L such that τ0 = τ and τt is Ft -polarized, for all t.
Hamiltonian symplectomorphisms and the Berry phase
P is the polarization, and N0 is the number of polar ions in unit volume.
Stochastic resonance induced by random fields in ferroelectrics
The formulae presented in this paper can be applied to polarized chargino or neutralino production in electron-positron annihilation, or indeed to any process in which a pair of massive fermions is produced and their polarization measured.
Prototype Graphs for radiative Corrections to Polarized Chargino or Neutralino Production in Electron-Positron Annihilation
In an experiment such as Planck HFI, where polarization measurements are made with detectors sensitive to the total polarized intensity in one direction, the main source of systematic error in polarization measurements is the fact that Q and U Stokes parameters are obtained from signal differences.
Some sources of systematic errors on CMB polarized measurements with bolometers
We represent the “chirality” state |Ri by the horizontal polarization photon state |Hi, and |Li by vertical polarization state |Vi.
Implement Quantum Random Walks with Linear Optics Elements
Although the presence of some degree of intrinsic polarization seems to be well established, there are still open problems regarding the polarization time evolution and the possible contribution of polarization induced by dust in the host galaxies.
Polarization of Gamma--Ray Burst Optical and Near-Infrared Afterglows
In this model a single peak of polarized emission is predicted, with a constant polarization angle. A small contribution to the observed polarization by dust in the host galaxy has not been completely ruled out.
Polarization of Gamma--Ray Burst Optical and Near-Infrared Afterglows
Note that the component f 0 remains completely undetermined and does not depend at all either on the parameters p, q , r of T (3) or on the maximally reduced polarization tensor of the theory whereas the other components f 1 , f 2 , f 3 are determined by these parameters and the elements of the polarization tensor.
Translational groups as generators of gauge transformations
By suppressing the last row and column of the polarization tensor(67), one obtains the polarization tensor (50) of the St¨uckelberg extended EPF model in 3+1 dimensions.
Translational groups as generators of gauge transformations
Polarization analyzers consisting of a quarter- and a half-waveplate before a polarizing beamsplitter are used to select an arbitrary product state.
Diagnosis, prescription and prognosis of a Bell-state filter by quantum process tomography
With a polarization beam splitter (PBS), the h-polarized component of the single-photon pulse is reflected by the cavity, while the v -polarized component is reflected via the mirror M .
Scalable photonic quantum computation through cavity-assisted interaction
The polarizing beam splitters transmit vertically-polarized photons and reflect horizontally-polarized photons.
Generalized Measurement and Conclusive Teleportation with Nonmaximal Entanglement
Indeed, the state of polarization can verify P = 0 but still refer to a specific type of polarization ellipse: only linear polarization (state ii)), or only circular polarization (state iii)).
Higher Order Statistsics of Stokes Parameters in a Random Birefringent Medium
Utilizing a passive twisted nematic liquid crystal component known as a radial polarization converter or “theta cell” (Stalder & Schadt 1996)1 , it is possible to convert the polar coordinate system of scattering polarization on the solar disk to one global Cartesian system.
The Prototype of the Small Synoptic Second Solar Spectrum Telescope (S5T)
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