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Pole

pole

1. A long, slender piece of wood; a tall, slender piece of timber; the stem of a small tree whose branches have been removed; as, specifically: A carriage pole, a wooden bar extending from the front axle of a carriage between the wheel horses, by which the carriage is guided and held back. A flag pole, a pole on which a flag is supported. A Maypole. See Maypole. A barber's pole, a pole painted in stripes, used as a sign by barbers and hairdressers. A pole on which climbing beans, hops, or other vines, are trained.

2. A measuring stick; also, a measure of length equal to 5 yards, or a square measure equal to 30 square yards; a rod; a perch.

(Science: botany) Pole bean, a horizontal timber resting on the tiebeams of a roof and receiving the ends of the rafters. It differs from the plate in not resting on the wall.

Origin: As. Pal, L. Palus, akin to pangere to make fast. Cf. Pale a stake, Pact.

1. Either extremity of an axis of a sphere; especially, one of the extremities of the earth's axis; as, the north pole.

2. (Science: geometry) A point upon the surface of a sphere equally distant from every part of the circumference of a great circle; or the point in which a diameter of the sphere perpendicular to the plane of such circle meets the surface. Such a point is called the pole of that circle; as, the pole of the horizon; the pole of the [[ec bcb liptic]]; the pole of a given meridian.

3. (Science: physics) One of the opposite or contrasted parts or directions in which a polar force is manifested; a point of maximum intensity of a force which has two such points, or which has polarity; as, the poles of a magnet; the north pole of a needle.

4. The firmament; the sky. Shoots against the dusky pole. (milton)

5. (Science: geometry) See polarity, and polar, magnetic pole. See Magnetic.

(Science: geography) Poles of the earth, or terrestrial poles, the two opposite points on the earth's surface through which its axis passes. Poles of the heavens, or Celestial poles, the two opposite points in the celestial sphere which coincide with the earth's axis produced, and about which the heavens appear to revolve.

Origin: L. Polus, Gr. A pivot or hinge on which anything turns, an axis, a pole; akin to to move: cf. F. Pole.


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... providing the (dubious-seeming) advantages offered to the guest blogger. As a senior scientist and lab manager, my advice is to get the 11-foot pole from one's quartermaster before touching "Biology-Online" in any way. Mere gloves, goggles, and fume hood seems insufficient protection ...

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by packetfire
Mon Oct 14, 2013 3:38 pm
 
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Re: Theories - Origin of Life

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by Luxorien
Wed Sep 19, 2012 3:23 am
 
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Topic: Theories - Origin of Life
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SPB - Spindle Pole Body

Hello everyone! I've been sitting my mycology lecture and I heard about such a thing like SPB - spindle pole body. My lecturer said that not much is known about its function, but maybe anyone here could tell something about it? What is its function? Thanks in advance :)

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by sophie0412
Wed Sep 05, 2012 3:15 pm
 
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melatonin

... night, so we can go to sleep easier. But nowhere I could find how the daily release of this hormone is triggered in humans that live on the north pole or so, so the sun wouldn't go down for 6 months and then it would be dark for another six months. It assumes the existence of other stimulatory ...

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by kk
Sat Apr 14, 2012 6:18 am
 
Forum: Physiology
Topic: melatonin
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Re: Meiosis = extreme confusion. Please help!

... replicate. Metaphase 2: Chromosomes align at the equatorial plate. Anaphase 2: Centromeres divide and sister chromatids migrate separately to each pole. Telophase 2: Cell division is complete. Four haploid daughter cells are obtained. One parent cell produces four daughter cells. Daughter cells ...

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by kyra13
Mon Aug 01, 2011 7:49 am
 
Forum: Cell Biology
Topic: Meiosis = extreme confusion. Please help!
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