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Topic: Polarised

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	Astronomical polarimetry (Site not responding. Last check: 2007-11-01)
		Therefore, in everyday life, although there is polarised light, we don't normally notice, because our eyes are not equipped to detect preferences in the osciallation properties of light waves.
		Although the fundamental properties of polarised light waves of different wavelengths are the same, technically their detection and measurement requires different instrumental setups.
		We can use the characteristics of the polarised light reaching us to deduce the properties of the charged particles (such as cosmic-rays) emitting it and of the magnetic fields inducing its emission.
	www.atnf.csiro.au /people/mdahlem/pop/tech/polar.html (1744 words)

	Polarised Sunglasses By Fuglies - Sunglasses for motorcycles, fishing or sailing
		Even though only the horizontally vibrating (or polarised) light will be 100% blocked by the vertical polarising filter in the sunglasses, as the vibration direction moves further away from the vertical, the amount of blocking by the polarising filter will also increase towards 100%.
		Polarising sunglasses also reduce the glare that comes off a other flat surfaces such as the hood of a car or the surface of a road making driving or riding safer and more pleasureable.
		Polarising sunglasses block the reflections and hence objects below the water - like fish - become visible to the wearers of polarised sunglasses since virtually all of the reflections from the water surface are vibrating horizontally and are blocked by the vertically aligned polarising filters in the sunglasses.
	www.fuglies.com.au /polarised_sunglasses.html (1118 words)

	Blogger: Email Post to a Friend
		Polarised conservatives think liberals are 'communists' who want the nation to be bankrupt and governed by its enemies.
		Polarised liberals think conservatives are criminals who want the nation to be a theocratic dictatorship run for the benefit of the oil industry.
		Kos is the archetype of the polarised priest.
	www.blogger.com /email-post.g?blogID=10151609&postID=114312872448910228 (1369 words)

	plane polarised light
		This page gives a simple explanation of what plane polarised light is and the way it is affected by optically active compounds.
		What emerges from the slit could be described as "plane polarised string", because the vibrations are only in a single (vertical) plane.
		if you shine a beam of polarised monochromatic light (light of only a single frequency - in other words a single colour) through a solution of an optically active substance, when the light emerges, its plane of polarisation is found to have rotated.
	www.chemguide.co.uk /basicorg/isomerism/polarised.html (656 words)

	Polarised Light
		Waves at intermediate angles will get through, but the component of their motion which is perpendicular to the slit will be absorbed and the wave that emerges the other side will be of a reduced size, and polarised in line with the slit.
		In standard polaroid, of the sort found in polarising sunglasses, the filtering effect is the result of long polymers in the material, all aligned the same way.
		Light reflecting off water (or any other shiny but non-metallic surface) will be partially polarised; this is because the component of the light which is perpendicular to the surface is inverted by being reflected, and interferes with itself destructively.
	fergusmurray.members.beeb.net /polarised.htm (933 words)

	Polarised light detects spinach health
		Rapid pulses of polarised light could be used to detect feisty or flailing raw plant materials.
		Researchers in the US have uncovered a picture of plant health, from spinach to corn, that is invisible to the naked eye.
		Polarised light that enters a leaf's interior can lose its polarity and be re-emitted as "depolarised" light.
	www.foodnavigator-usa.com /news/news-ng.asp?n=61548-polarised-light-detects (477 words)

	Polarisation : Polarised and unpolarised waves
		When all the oscillations occur in one plane, as shown in Figure 1 and Figure 2, the wave is said to be polarised.
		The difference between polarised and unpolarised waves is shown in Figure 3.
		You should note that longitudinal waves cannot be polarised since the oscillations occur in the direction in which the wave is travelling.
	scholar.hw.ac.uk /site/physics/topic3.asp?outline=no (233 words)

	Polarised moonlight aids dung beetle escape - 02 July 2003 - New Scientist
		Researchers have found the first animal that uses the polarised pattern of moonlight to set its course by - it is a dung beetle.
		When the researchers shaded the beetles with a polarising filter that changed the direction of polarisation by 90°, the beetles turned a right angle.
		She says the great advantage of using polarised light, rather than the Moon itself, is that a couple of patches of cloudless sky shed enough light for navigation.
	www.newscientist.com /article.ns?id=dn3904 (374 words)

	Louis Pasteur - Wikipedia, the free encyclopedia
		Upon examination of the minuscule crystals of tartaric acid, Pasteur noticed, the crystals came in two asymmetric forms that were mirror images of one another.
		Tediously sorting the crystals by hand gave two forms of tartaric acid: solutions of one form rotated polarised light clockwise, while the other form rotated light counterclockwise.
		An equal mix of the two had no polarizing effect on light.
	en.wikipedia.org /wiki/Louis_Pasteur (2081 words)

	No Title
		the scattered radiaion is preferentially polarised perpendicular to the plane of the scattering.
		Unpolarised light which is scattered off a surface is preferently polarised perpendicular to the plane of the scattering.
		The right circularly polarised case corresponds to spin -1, while the left polarized light corresponds to spin 1.
	www.pa.msu.edu /~duxbury/courses/phy294H/lectures/lecture39/lecture39.html (913 words)

	Polarised v non-polarised images for assessment of post-orthodontic demineralisation (Site not responding. Last check: 2007-11-01)
		One way to reduce reflections is to place a polarising filter on the flash and another over the lens, with the polarising effect at right angles to the first.
		Results: The positive and negative predictive values were better with the polarised images (0.97 and 0.84) than with the non-polarised images (0.92 and 0.81).
		Conclusion: Images produced with polarising filters were more accurately and reproducibly assessed for demineralised white lesions surrounding orthodontic brackets, than images produced without polarising filters.
	iadr.confex.com /iadr/bsdr04/techprogram/abstract_49220.htm (321 words)

	Dusty Tori in Seyfert Galaxies
		The symbols have the same meaning as in section 2.1.3 where Seyfert 2s with and without polarised broad lines are represented by filled circles and open squares, respectively.
		It is apparent that while many of the Seyferts with polarised broad lines lie within the warmer regions of the plots, there is a large scatter.
		As the viewing angle is increased (referenced to the polar direction) the hot dust becomes obscured and the ratios reflect the cooler dust observed.
	www.atnf.csiro.au /pasa/15_2/heisler/paper/node2.html (2210 words)

	Nieminen et al. "Optical Measurement of microscopic torques" J. Mod. Opt. 48, 405-413 (2001) (Site not responding. Last check: 2007-11-01)
		In these cases, the beam is elliptically polarised, and the electric field vector E traces out an ellipse during each optical period.
		Consider a circularly polarised laser beam used to trap a microscopic particle composed of a uniaxial birefringent material such as calcite or a suitable polymer.
		Figure 2: The two circularly polarised components of the transmitteed light can be measured to determine the direction of circular polarisation.
	www.physics.uq.edu.au /lp/tweezers/papers/nieminen2001jmo48/index.html (2794 words)

	[No title] (Site not responding. Last check: 2007-11-01)
		If the receiving antenna is circularly polarised and of the proper orientation then all of the power of the wave will efficiently be received by this antenna.
		There is the contradicting conclusion that both a circularly polarised antenna and a dula polarised antenna receive in the same way all of the incident power...
		A dual polarised antenna is a two in one, each part having a polarisation at 90 degrees from the other one.
	www.rfglobalnet.com /forums/Default.aspx?g=posts&t=7161&VNETCOOKIE=NO (656 words)

	Light Polarised (Site not responding. Last check: 2007-11-01)
		Polarised light can be described as rays of light that have been restricted to vibrate in one plane only.
		Some people have put forward the theory that polarised light must have been known to the Vikings and that they used the polarisation of the sky for navigation.
		The first written evidence that polarised light had been recognised comes from Erasmus Bartholinus who recorded his observations and experiments he made using a transparent Iceland Spar crystal.
	www.digiscope.eu.com /handheld_microscope/light_polarised.html (216 words)

	MICROSCOPY UK / MICSCAPE Technicolour Nature - polarised light microscopy
		Part I discusses how the novice can obtain and use polarising filters with the compound microscope (not the stereo) and is illustrated with images of crystals viewed using polarised light.
		To use polarising filters, place one filter, the polariser in the swing out filter holder beneath the microscope condenser and the second smaller filter, the analyser on the eyepiece (see below).
		The author prefers to lightly stick the filter on the eyepiece with plasticine, 'Blu-Tak' or similar thus allowing this filter to be rotated in use by turning the eyepiece.
	www.microscopy-uk.org.uk /mag/articles/poldw.html (802 words)

	Hilbert Series of Polarised Varieties [HB 95]
		In a precise sense, this now represents all possible (infinitely many) Hilbert series that may be associated to a polarised K3 surface.
		This includes new datatypes for (the numerical data associated to) polarised singularities and polarised varieties.
		It is possible for a user to generate many families of these varieties interactively--a typical application of these methods is to generate large numbers of examples.
	magma.maths.usyd.edu.au /magma/ReleaseNotes/rel211/node43.htm (215 words)

	Austria polarised as the extreme right wing Freedom Party of Haider enters the government. Interview with Austrian ...
		Austria polarised as the extreme right wing Freedom Party of Haider enters the government.
		Railworkers took the initiative in launching demonstrations against the entry of the extreme right wing Freedom Party of Haider in the new government on the third of February.
		First of all, the huge anti-racist demonstrations of young radicalised students and workers (not many people know that the first demonstrations against Haider's party entering the government were organised by the railworkers union), and secondly the opposition of the unions against privatisation will provide fertile ground for the spread of Marxist ideas.
	www.marxist.com /Europe/austria_polarised_as_the_extreme.html (1176 words)

	MICROSCOPY UK / MICSCAPE Technicolour Nature - polarised light microscopy
		I hope the attractive images of crystals under polarised light in the last article encouraged those unfamiliar with the technique to try it.
		Looking through the past ten years of magazines from three UK clubs the author belongs to, shows many tips for how to prepare crystal mounts, what chemicals are worth trying and how to make home-made gadgets such as simple light-bulb based heaters for drying or heating slides.
		A number of the early Victorian microscope slides of crystals for polarised light use chemicals that are now hard for the amateur to obtain, and in many cases use toxic or harmful chemicals such as thallium, barium, mercury and lead salts.
	www.microscopy-uk.org.uk /mag/articles/poldw2.html (1425 words)

	Auckland District Law Society - Legislation - Opinions polarised in profession
		Ronette Druskovich, convener of the Recently Admitted Members Committee, says her committee has discussed various aspects of the bill but it has not taken a formal position.
		"I think committee members are quite polarised, as I suspect the rest of the profession is also," she told Law News.
		Mr Toogood is a supporter of compulsory continuing legal education and wonders whether it should be legislated for in the statute, rather than left for an NZLS decision
	www.adls.org.nz /profession/legislation/opinionspolarisedinprofession.asp (1199 words)

	What is Polarised Light (Site not responding. Last check: 2007-11-01)
		If this polarised light is passed through a polaroid filter only light vibrating in one plane is transmitted.
		If this polarised light is then passed through a second piece of polaroid filter which has been orientated so that the polarised plane is parallel to that of the first filter, the polarised light is transmitted.
		The wave that is created will spread out but the higher the frequency the more it can go in one direction without being diffracted, visible light has a high enough frequency that most of the time it looks like it is travelling in a straight line.
	www.digiscope.eu.com /handheld_microscope/polarised.html (372 words)

	The Scotsman - International - US voters polarised over a second Bush presidency (Site not responding. Last check: 2007-11-01)
		ONE year before the next presidential election in the United States, voters are evenly divided between the president, George Bush, and a Democratic challenger, a new poll showed yesterday.
		The poll also was released in advance of governorship elections in Kentucky and Mississippi tomorrow, the results of which could provide an early indication of Republican chances and the strength of the president’s coattails before next year’s general elections.
		Despite raising more than $80 million (£47 million) for his 2004 re-election bid he said the purpose of this tour was to campaign for the Republican candidates for governor in both states.
	thescotsman.scotsman.com /international.cfm?id=1211782003 (733 words)

	Professional Wealth Management: A polarised community
		At one end of this polarised community of providers are those with clear strategic plans, defined resources, reinforced by visionary management displaying a committed front.
		The polarised nature of the current wealth management employer market is creating opportunities for careers to move rapidly up or down.
		The GWST prediction is that up to 35-40 per cent of senior management within private wealth management will change within the next 18 months given the current conditions and the need to respond decisively, positively and deliver profitable robust businesses.
	www.pwmnet.com /news/fullstory.php/aid/132/A_polarised_community.html (1253 words)

	Halfbakery: polarised window blinds
		We could purchase light polarised blinds that were assigned a particular orientation of polarisation depending on which side of the street we lived.
		We would then have sunblinds, cutting out half the light, but the neighbours' windows opposite would be totally opaque (appearing fl).
		For the pedestrians, you just have to require them to wear sunglasses polarised _both_ ways before you let them walk around.
	www.halfbakery.com /idea/polarised_20window_20blinds (115 words)

	Capacitors
		There are many types of capacitor but they can be split into two groups, polarised and unpolarised.
		Electrolytic capacitors are polarised and they must be connected the correct way round, at least one of their leads will be marked + or -.
		Tantalum bead capacitors are polarised and have low voltage ratings like electrolytic capacitors.
	www.kpsec.freeuk.com /components/capac.htm (1171 words)

	Polarised light may reveal hidden exoplanets - space - 15 November 2005 - New Scientist Space
		Now, Sujan Sengupta and Malay Maiti of the Indian Institute of Astrophysics in Bangalore say astronomers may soon be able to detect these elusive worlds too — providing they have atmospheres.
		Light bouncing off particles in their atmospheres should become linearly polarised, with its electric field aligned in one plane, they say.
		Other researchers have modelled the polarisation signal expected from large, spherical planets travelling in tight circles around their host stars.
	www.newscientistspace.com /article/dn8324-polarised-light-may-reveal-hidden-exoplanets.html (682 words)

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