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	NationMaster.com - Encyclopedia: List of optical topics (Site not responding. Last check: 2007-11-07)
		An angle of incidence is the angle between a beam incident on a surface and the normal (line perpendicular to the surface at the point of incidence).
		Beer-Lambert law -- binoculars -- birefringence -- fl body radiation -- Brewster's angle -- brightness temperature -- Brillouin scattering In optics, the Beer-Lambert law, also known as Beers law or the Beer-Lambert-Bouguer law is an empirical relationship in relating the absorption of light to the properties of the material the light is travelling through.
		The larger the angle to the normal, the smaller is the fraction of light transmitted, until the angle when total internal reflection occurs.
	www.nationmaster.com /encyclopedia/List-of-optical-topics (5804 words)

	Brewster's angle - TheBestLinks.com - Brewsters angle, David Brewster, Fresnel equations, Polarisation, ... (Site not responding. Last check: 2007-11-07)
		Brewsters angle, Brewster's angle, David Brewster, Fresnel equations...
		A glass plate placed at Brewster's angle in a light beam can thus be used as a polariser.
		For a randomly polarized ray incident at Brewster's angle, the reflected and refracted rays are at 90° with respect to one another.
	www.thebestlinks.com /Brewsters_angle.html (189 words)

	[No title] (Site not responding. Last check: 2007-11-07)
		In 1815 David Brewster, from his experiments, found that the amount of polarization depends on the angle of incidence and that there is an angle, now known as Brewsters angle, for which the reflected light is polarized the maximum.
		Brewster angle can be found using the equation, EMBED Equation.3 From the equation it is evident that the Brewster angle depends on the refractive indices of the media on either side of the interface.
		Determine the angle of refraction (the angle between the normal to the refracting surface and the refracted beam).
	www.physics.louisville.edu /ph296/reflrefra.doc (1131 words)

	HOLOGRAPHIC PORTRAITS
		Reference beam angle coming in to the copy plateholder should be brewsters angle (approx.
		Having an ANGLED plane of slits eliminates this possibility to a great extent due to the fact that any point along the length of each slit area is located, and focused, at a different point in space relative to the viewer.
		Since the master plateholder and ground glass were recorded at the 45-degree angle, this blurring is enhanced even further due to the angled nature of their reconstruction.
	www.holoworld.com /holoportraits/partfour.html (1137 words)

	[LargeFormat] will a darkslide skim across a pond from the s (Site not responding. Last check: 2007-11-07)
		(The angle of incidence is measured from the normal or perpendicular to the surface.) The case of light traveling from glass to air is quite different.
		Brewsters angle i (angle of incidence) is given by tan i = n (index of refraction).
		So you measure angles from the normal to the surface of the lens at the point that the light ray intersects the surface of the lens.
	www.pairlist.net /pipermail/largeformat/2001q4/010579.html (404 words)

	Brewster\'s angle (Site not responding. Last check: 2007-11-07)
		An illustration of the polaristion of light which is incident on an interface at Brewster's angle.
		Brewster's angle (also known as Polarization angle) is an optical phenomenon first discovered by the Scottish Physicist, Sir David Brewster (1781-1868).
		≈1), Brewster's angle for visible light is approximately 56° to the normal.
	brewsters-angle.area51.ipupdater.com (211 words)

	Untitled
		Finally we studied the Brewster's angle of a glass block by measuring the blocks ability to eliminate one directional component of a incident laser beam.
		First the block was adjusted so as to retro-reflect the beam back into the laser, this angle on the scale was recorded as the bas angle, then the angle of the table and the orientation of the polarizer were simultaneously adjusted until the intensity of the reflected beam achieved a minimum as judged visually.
		The adjusted angle at which the intensity of the light was minimized was found to 304° +/- 2°, where the 2° arrises from the serious difficulty of determining when everything is positioned perfectly.
	www.robertrohde.com /classes/Labs/Lab4.shtml (2369 words)

	Brewsters angle
		Optical phenomenon discovered by Sir David Brewster (1781-1868), Scottish physicist.
		When light moves between two media of differing refractive index, light which is p-polarised with respect to the interface will not be reflected from the interface at one particular incident angle, known as Brewster's angle.
		Note that, since all p-polarised light is refracted, any light reflected from the interface at this angle must be s-polarised.
	www.ebroadcast.com.au /lookup/encyclopedia/br/Brewsters_angle.html (91 words)

	OLYMPUS MIC-D: Interactive Java Tutorial - Brewster's Angle (Site not responding. Last check: 2007-11-07)
		An important property of reflected polarized light is that the degree of polarization is dependent upon the incident angle of the light, with the increasing amounts of polarization being observed for decreasing incident angles.
		The principle behind Brewster's angle is illustrated Figure 1 for a single ray of light reflecting from the flat surface of a transparent medium having a higher refractive index than air.
		Light reflected from a highway surface at the Brewster angle is often annoying and is often termed glare and can be demonstrated quite easily by viewing the distant part of a highway or the surface of a swimming pool on a hot, sunny day.
	www.mic-d.com /java/brewster3d (830 words)

	Chromium-doped beryllium aluminum silicate laser systems - Patent 4464761 (Site not responding. Last check: 2007-11-07)
		The laser of claim 10 and wherein the ends of said rod are cut at Brewster's angle, said rod being cut at Brewster's angle in the b-c plane with the optical path along c.
		Laser medium 33 is similar to rod 13 with the exceptions being that the ends are cut at Brewsters angle and arranged for polarization along the b-axis and the rod itself aligned along the Brewster's angle rather than being colinear with axis of the cavity.
		Although a particular embodiment of the invention has been described and illustrated herein, it is recognized that modifications and variations may readily occur to those skilled in the art and consequently, it is intended that the claims be interpreted to cover such modifications and equivalents.
	www.freepatentsonline.com /4464761.html (4168 words)

	brewster274_03 (Site not responding. Last check: 2007-11-07)
		In truth, the asymmetry may be a subtle one related to the incident or viewing angle, but usually it is an obvious anisotropy in the matedal of the polarizer itself.
		This is known as Brewster's law, after the man who discovered it empirically, Sir David Brewster (1781-1868), professor of physics at St. Andrew's University.
		In this experiment, test Brewster's law and use it to estimate the indices of refraction of materials.
	www.swc.cc.ca.us /~jveal/Physics/Phys274/Brewster.htm (1535 words)

	BREWSTER, SIR DAVID - LoveToKnow Article on BREWSTER, SIR DAVID (Site not responding. Last check: 2007-11-07)
		Though he duly finished his theological course and was licensed to preach, Brewsters preference for other pursuits prevented him from engaging in the active duties.of his pro-fession.
		To Brewster is due themerit of suggesting the use of lenses for the purpose of unitingthe dissimilar pictures; and accordingly the lenticular stereo-scope may fairly be said to be his invention.
		In1819 Brewster undertook further editorial work by establishing, In conjunction with Robert Jameson (17741854), the Edinburgh Philosophical Journal, which took the place of the Edinburgh idagazine.
	www.1911ency.org /B/BR/BREWSTER_SIR_DAVID.htm (2142 words)

	Coachbult.com - Brewster (Site not responding. Last check: 2007-11-07)
		Brewster displayed a number of carriages at the 1893 Chicago World’s Fair - aka the Columbian Exposition, as it marked the 400th anniversary of Columbus sailing to the New World - and won a number of prizes and medals to be added to the awards received by his father 10 years earlier.
		Brewster Green was a slightly olive, medium dark shade of green that could be classified as a semi-gloss finish in today’s terminology as it was neither shiny nor completely non-reflective.
		Brewster and Co. is credited with the successful implementation of the roll-up window, a mechanical device which replaced the straps found on bodies that dated back to early carriages.
	www.coachbuilt.com /bui/b/brewster/brewster.htm (11231 words)

	Brewster: Facts and details from Encyclopedia Topic (Site not responding. Last check: 2007-11-07)
		Brewster is the name of some places in the United States (North American republic containing 50 states - 48 conterminous states in North America plus Alaska in northwest North America and the Hawaiian Islands in the Pacific Ocean; achieved independence in 1776)
		Brewster (Brewster is the name of some places in the united states:...)
		Brewster's angle (Brewsters angle (also known as polarization angle) is an optical phenomenon first discovered by the scottish...)
	www.absoluteastronomy.com /ref/brewster (356 words)

	Brewster's angle - (Site not responding. Last check: 2007-11-07)
		Image:Brewsters-angle.png Brewster's angle (also known as the polarization angle) is an optical phenomenon named after the Scottish Physicist, Sir David Brewster (1781–1868).
		The phenomenon of light being polarized by reflection from a surface at a particular angle was first observed by Etienne-Louis Malus in 1808.
		He attempted to relate the polarizing angle to the refractive index of the material, but was frustrated by the inconsistent quality of glasses available at that time.
	psychcentral.com /psypsych/Brewster's_angle (453 words)

	[No title]
		At a certain angle known as "Brewsters angle", light is 100% polarised.
		Brewsters angle is given by Brewsters angle = arctan(n'/n) where n' is the refractive index of the material giving off the reflection (eg glass, water).
		Refractive indices of common materials Material refractive index Brewsters angle air n=1 45 water n=1.333 53 glass n approx 1.5 56 (depends on the glass) So enough theory, All the surfaces a photographer wants to control lie in the 50 degree range.
	www.mat.uc.pt /~rps/photos/filters_uv_pol.txt (3137 words)

	Spectrometry and filtering with high rejection of stray light - Patent 6831747 (Site not responding. Last check: 2007-11-07)
		A means is provided for directing source photons that are reflected from or transmitted through a sample, over a range of angles of incidence, into the transparent substrate and onto the metal foil such that source photons are incident at the Brewsters angle.
		The beam is directed at an angle of incidence 1 relative to the foil normal such that the energy and momentum of the photons matches that of the surface plasmons (Brewster's angle for media of complex index of refraction).
		The collection of measurements in a range of angles comprises the spectrum of the sample without the noise associated with stray light, said stray light being reflected to a very high degree by the metal foil.
	www.freepatentsonline.com /6831747.html (3779 words)

	eWant.com (Site not responding. Last check: 2007-11-07)
		where theta is the angle between the oscillating direction of the wave and the polarizing direction of the filter.
		A problem with linearly polarized light in your camera, for example, is that when you bounce it off a mirror at (near) Brewster's angle, it may be (nearly) completely eliminated.
		The degree of polarisation is related to the angle of incidence of light and the refractive indices of the two materials.
	www.ewant.com (2838 words)

	brewsters cream ice selections (Site not responding. Last check: 2007-11-07)
		Drew service brewsters cream fourth knife dangerous whom.
		Angle cream ice airplane knife wheat flow muscle.
		Serious Ann driver brewsters cream threw chapter bar.
	creams.conditionerworld.info /5/brewsters-cream-ice-guide.htm (288 words)

	Frequently asked questions about polarizers and UV/Skylight filters
		The idea is to use a linear polarizer up front to get rid of some linearly polarized light you don't want (glare off shiny surfaces, for example, will have a large linearly polarized component), and then it "stirs up" the result so you don't have linearly polarized light bouncing around in the camera.
		Refractive indices of common materials (relative to air, n=1) Material refractive index Brewsters angle water n=1.333 53 glass n approx 1.5 56 (depends on the glass) So enough theory, All the surfaces a photographer wants to control lie in the 50 degree range.
		This is because the direction of polarization can vary with respect to the camera depending on the angle of incidence of the light.
	www.mat.uc.pt /~rps/photos/filters_uv_pol/faq.html (3743 words)

	EcEn 360 Tutorials-Maxwell's Laws-Brewsters Angle (Site not responding. Last check: 2007-11-07)
		Brewster angle is the angle of incidence where there is no reflected power.
		When a TM wave hits an interface dipoles are induced in the material in the direction of the E field.
		At just the right angle the dipole axes line up with the direction of the reflected wave.
	www.ee.byu.edu /ee/em/brewster.htm (99 words)

	OpticsCalc: Reflection Coefficients (Site not responding. Last check: 2007-11-07)
		The fraction of the light reflected is dependent on the the difference in the index of refraction of the two materials, the angle of incidence and the polarization of the light.
		The Reflection Coefficients page computes the reflection coefficients for the two polarizations given the angle of incidence and the indices of the two materials.
		In addition it also computes the Brewsters angle which is the angle at which the reflection of the 'p' polarization goes to zero.
	www.dld-llc.com /software/manual/refl_coef.htm (100 words)

	brewsters history - Books, journals, articles @ The Questia Online Library
		Brewsters definition of its core competency may be different from that...Smith became the youngest Headmaster in the schools 150year history.
		Brewsters late equaliser at Tannadice placed him...Kilmarnock at 38 years and 195 days - but Brewsters strike at Tannadice was achieved at 38...
		Brewsters close-range finish was enough to deny Walter Smiths Rangers...backed the former Tannadice favourite to create another bit of history.
	www.questia.com /search/brewsters-history (1485 words)

	Radioactivities November 2004 AARC Newsletter
		Cold December up north is caused when the angle of the sun is greater and the effect of this radiation is greatly reduced.
		An expression of the fact that when light reflected from the plane surface of a transparent substance is plane polarized, the tangent of the angle of incident is equal to the index of refraction of the substance.
		These angles are what make lower frequency propagation work for DX, high vertical radiation 40 meters and downward but hurts vertical radiation 20 meters and up unless your antenna is at the edge of the sea.
	www.qsl.net /w9anl/newsltrs/2004/0411.htm (2098 words)

	[RT] STL amplifier (Site not responding. Last check: 2007-11-07)
		There is a phase reversal on reflection with H pol but not with V pol at angles greater than Brewster's angle so the Fresnel ellipse is different.
		The reflection coefficient for H pol is very nearly unity at all angles and virtually all ground conditions, so the likelihood of getting complete cancellation is high.
		For V pol with reflection angles greater than Brewsters angle (maybe 5° for your swampy terrain) the reflection coefficient is somewhere between 0.4 and 0.7, so total cancellation is less likely.
	www.broadcast.net /pipermail/radio-tech/2002-December/032330.html (318 words)

	brewsters cream ice items (Site not responding. Last check: 2007-11-07)
		Badly needle headed pleasure active brewsters slept research dug consonant badly.
		Bean plural compass aid mood brewsters cream buffalo evidence pen characteristic.
		Wealth buried brewsters calm mathematics private Russian wealth mathematics equator buried stiff dull.
	creams.stevesgreatdealse.info /2/BrewstersCreamIceinformation.htm (1179 words)

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