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Topic: Mie scattering

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	Blue Sky and Rayleigh Scattering
		Therefore the light scattered down to the earth at a large angle with respect to the direction of the sun's light is predominantly in the blue end of the spectrum.
		Scattering in which the scattered photons have either a higher or lower photon energy is called Raman scattering.
		Mie scattering is not strongly wavelength dependent and produces the almost white glare around the sun when a lot of particulate material is present in the air.
	hyperphysics.phy-astr.gsu.edu /hbase/atmos/blusky.html (703 words)

	Scattering - Wikipedia, the free encyclopedia
		Scattering, also called scatter, is the process by which small particles suspended in a medium of a different index of refraction diffuse a portion of the incident radiation in all directions.
		Scattering varies as a function of the ratio of the particle diameter to the wavelength of the radiation.
		In scattering experiments, a target of some material is bombarded with a beam of particles (typically electrons, protons, or neutrons) and the number of particles emerging in various directions is measured.
	en.wikipedia.org /wiki/Scattering (678 words)

	Scattering: Tutte le informazioni su Scattering su Encyclopedia.it (Site not responding. Last check: 2007-10-11)
		Un semplice esempio di scattering può essere l'urto contro una sfera rigida.
		Lo scattering Raman (dal nome del suo scopritore C.V. Raman che nel 1928 lo osservò per primo) è un esempio di scattering anelastico, ovvero di un urto fra particelle dove l'energia cinetica complessiva del sistema non si conserva (l'energia totale del sistema si conserva in tutti i tipi di urti).
		Si definiscono fenomeni di scattering multiplo quei casi dove le particelle (o la luce) subiscono, all'interno del mezzo, un numero molto alto di eventi di scattering.
	www.encyclopedia.it /s/sc/scattering.html (2728 words)

	Mie Scattering
		Mie scattering is the straightforward (if somewhat painful) application of Maxwell's equations to an isotropic, homogeneous, dielectric sphere.
		It will be the first type of scattering examined as it is equally applicable to spheres of all sizes, refractive indices and for radiation at all wavelengths.
		It is characterized by peaks in the forward scattering and, to a lesser extent, backward scattering directions.
	www.ess.uci.edu /~cmclinden/link/xx/node19.html (603 words)

	Colour and the Optical Properties of Materials, R.J.D. Tilley (Site not responding. Last check: 2007-10-11)
		Mie scattering is a form of diffraction and, in general, is wavelength dependent.
		Although Mie theory provides an exact solution for light scattering from spherical particles, the scattered intensity pattern is a complex function of particle radius, the wavelength of the light and its polarisation, the refractive index of the particle and the refractive index of the surrounding medium.
		The scattered intensity is represented by the length of the arrows.
	www.cf.ac.uk /engin/staff/rjdt/colour/supplemt/c5/s6.html (473 words)

	Scattering -- Facts, Info, and Encyclopedia article (Site not responding. Last check: 2007-10-11)
		In (The branch of physics that studies subatomic particles and their interactions) particle physics, scattering is a class of phenomena by which (A body having finite mass and internal structure but negligible dimensions) particles are deflected by collisions with other particles.
		In (The branch of physics that studies subatomic particles and their interactions) particle physics, scattering refers to deflection of (A particle that is less complex than an atom; regarded as constituents of all matter) subatomic particles, a process central to many experiments.
		Scattering has also been done off of (A constituent (proton or neutron) of an atomic nucleus) nucleons and (Hypothetical truly fundamental particle in mesons and baryons; there are supposed to be six flavors of quarks (and their antiquarks), which come in pairs; each has an electric charge of +2/3 or -1/3) quarks.
	www.absoluteastronomy.com /encyclopedia/s/sc/scattering.htm (697 words)

	AMS Glossary
		Sometimes scattering is applied in a restricted sense to that radiation not accounted for by the laws of specular reflection and refraction, which are approximate because matter is not continuous on all scales.
		Often the term scattered radiation is applied to that radiation observed in directions other than that of the source and may also be applied to acoustic and other waves.
		Scattering is also applied to any interaction between particles that results in a change in direction.
	amsglossary.allenpress.com /glossary/search?id=scattering1 (203 words)

	Scattering Summary
		Scattering is a general physical process whereby some form of radiation, such as light, sound, or moving particles, is forced to deviate from a straight trajectory by one or more localized non-uniformities in the medium through which it passes.
		Light scattering can also give color to some objects, usually shades of blue (as with the sky, the human iris, and the feathers of some birds), but resonant light scattering in nanoparticles can produce different highly saturated and vibrant hues, especially when surface plasmon resonance is involved.
		Rayleigh scattering is a process in which electromagnetic radiation (including light) is scattered by a small spherical volume of variant refractive index, such as a particle, bubble, droplet, or even a density fluctuation.
	www.bookrags.com /Scattering (2980 words)

	IRIS software features
		For a given scattering angle it calculates the Mie scattered intensity(1) which depends on the droplet diameter, wavelength of light and the complex refractive indices(2) of the droplet and surrounding medium.
		The Mie functions for each scattered polarised light component are averaged to ultimately present a simulation as would be seen by eye or camera without a polarising filter.
		In contrast to rigorous Mie theory, colour representation involves empiricism and approximations and its perception is to a greater or lesser extent subjective.
	www.sundog.clara.co.uk /droplets/irishwk.htm (964 words)

	Mie scattering experiment (Site not responding. Last check: 2007-10-11)
		The signal from the PMT is proportional to the intensity of the scattered light, so the square root of the signal is proportional to R. This scattered light is also proportional to the difference in the dielectric constant at the gas/fluid interface presented by the surface of the bubble.
		Application of the exact Mie scattering formulae indicates that the classical ray optics limit is only approached very slowly as the size of the bubble increases.
		The scattered light is collected by a lens and an aperture is placed at the image to reduce the light detected from scattering from impurities it then passes through a line pass filter, which blocks the broadband sonoluminescence flash, onto a photodetector.
	physics.open.ac.uk /~swebb/miescatt.htm (968 words)

	scattering concept from the Astronomy knowledge base (Site not responding. Last check: 2007-10-11)
		Scattering by free electrons was the dominant source of opacity in the early universe.
		The energy of the scattered photon is the same (in the rest frame of the atom) as that of the incident photon.
		Mie scattering (2 facts) - Scattering of light (without regard to wavelength) by larger particles, such as those of dust or fog in Earth's atmosphere.
	www.site.uottawa.ca:4321 /astronomy/scattering.html (491 words)

	Untitled Document
		The scattered intensity is proportional to the density.
		The Rayleigh scattering frequency line-width (FWHM) is a function of the temperature (due to thermal induced molecular motions The shape of the scattered spectrum (as illustrated in Figure 3) is governed by the y-parameter which is also a unction of the density and governs the onset of Brillouin scattering effects.
		For example the density is proportional to the integrated intensity, the width of the scattering is related to the temperature of the flow, and the position of the center of the profile is related to the Doppler shift or velocity.
	www.ae.uiuc.edu /~elliottg/frs/frs.htm (5347 words)

	Atmospheric Scattering
		Scattering is the process by which "small particles suspended in a medium of a different index of refraction diffuse a portion of the incident radiation in all directions." With scattering, there is no energy transformation, but a change in the spatial distribution of the energy.
		Mie scattering is caused by pollen, dust, smoke, water droplets, and other particles in the lower portion of the atmosphere.
		Mie scattering is responsible for the white appearance of the clouds, as seen below.
	www.severewx.com /Radiation/scattering.html (499 words)

	Mie Scattering
		The optical theories applied in the present study describe the light scattering properties of an isolated spherical particle and therefore cannot be applied to systems in which the particles are crowded together and near-field interactions between particles are significant.
		is the average cosine of the scattering angle, weighted by the intensity of the scattered light as a function of angle.
		Scattering coefficient S versus sphere diameter for an optically isotropic sphere from Mie theory, using the average index approximation.
	www.lrsm.upenn.edu /~frenchrh/mie_scattering.htm (768 words)

	IRIS software features
		For a given scattering angle it calculates the Mie scattered intensity(1) which depends on the droplet diameter, wavelength of light and the complex refractive indices(2) of the droplet and surrounding medium.
		The Mie functions for each scattered polarised light component are averaged to ultimately present a simulation as would be seen by eye or camera without a polarising filter.
		In contrast to rigorous Mie theory, colour representation involves empiricism and approximations and its perception is to a greater or lesser extent subjective.
	www.atoptics.co.uk /droplets/irishwk.htm (964 words)

	[No title]
		While the scattering ratio method is usually inapplicable for polydisperse particulates, it will still work in many cases for many plasma applications, where particles stratify in different layers according to their size.
		The scattering ratio method of measuring particulates is an established technique in aerosol science, and it was recently demonstrated for particles suspended in a radio-frequency plasma by Shiratani and Watanabe (1992).
		The scattering ratio [[sigma]] is the ratio of parallel (I) and perpendicular (I^) polarized scattered intensities.
	dusty.physics.uiowa.edu /~goree/papers/PSST_scat.html (3958 words)

	Features Item: Scattered Light: New Developments in SLS Particle Sizing (Site not responding. Last check: 2007-10-11)
		The low angle, static light scattering technique as discussed here is based on Mie scattering theory as it pertains to the intensity of scattered light over a range of forward angles.
		Although Mie theory applies strictly only to spherical, isotropic particles with specific and known optical properties, it may be applied to particle suspensions that do not exactly meet all assumptions of the Mie model.
		If Mie theory is assumed to describe the scattering phenomenon produced by a properly dispersed system of real particles, and if the scattering pattern is accurately measured, then Mie theory alone is sufficient to extract particle size, particle quantity, modality and distribution information.
	www.ceramicindustry.com /CDA/ArticleInformation/features/BNP__Features__Item/0,2710,1864,00.html (2063 words)

	Light scattering characteristics for spherical particles on basis of Mie theory
		scattering amplitudes for light polarized perpendicular and parallel to the scattering plane,
		intensity of scattering for incident light polarized perpendicular and parallel to the scattering plane,
		energy of light scattered in angles from zero to theta, in pats of total scattered energy.
	www.sci-soft.net /Mie.htm (117 words)

	Micromeritics - Products - Particle Size - Saturn Digisizer
		Mie theory describes characteristics of the scattering pattern (light intensity versus scattering angle, among other things) produced by the interaction of a plane wavefront of monochromatic light with a spherical, isotropic particle suspended in a medium of known optical properties.
		Mie theory provides the fundamental light scattered by an individual particle is a function of the scattering pattern produced by spherical particles of a specific size.
		Mie theory is applied to determine the theoretical particle quantity distribution by size that is required to best reproduce the experimentally measured scattering pattern.
	www.micromeritics.com /products/saturn_digisizer_techniques_overview.aspx (872 words)

	POV-Ray 3.1g Documentation - Scattering
		The amount of light scattered by particles in the atmosphere does not depend on the angle between the viewing direction and the incoming light.
		Types 2 and 3 are Mie haze and Mie murky scattering which are used for relatively small particles such as minuscule water droplets of fog, cloud particles, and particles responsible for the polluted sky.
		The default eccentricity value of zero defines isotropic scattering while positive values lead to scattering in the direction of the light and negative values lead to scattering in the opposite direction of the light.
	maciej.crypton.pl /povdoc/pov360.htm (457 words)

	Mie Scattering: equal scattering of visible light wavelengths (Site not responding. Last check: 2007-10-11)
		Another type of scattering (called Mie Scattering) is responsible for the white appearance of clouds.
		Cloud droplets with a diameter of 20 micrometers or so are large enough to scatter all visible wavelengths more or less equally.
		Because all wavelengths are scattered, clouds appear to be white.
	ww2010.atmos.uiuc.edu /(Gh)/wwhlpr/mie_scattering.rxml?hret=/indexlist.rxml (98 words)

	Principles of Remote Sensing - Centre for Remote Imaging, Sensing and Processing, CRISP
		Scattering of electromagnetic radiation is caused by the interaction of radiation with matter resulting in the reradiation of part of the energy to other directions not along the path of the incidint radiation.
		Rayleigh scattering occurs when the size of the particle responsible for the scattering event is much smaller than the wavelength of the radiation.
		The scattering intensity and its angular distribution may be calculated numerically for a spherical particle.
	www.crisp.nus.edu.sg /~research/tutorial/scatter.htm (296 words)

	Particle Size Determination
		This Experiment uses mie scattering to determine the size of small latex spheres.
		To compare theory to the data to the theory I needed to correct the exact solutions to Maxwell's equations by considering scattering throughout the length of the entire cell.
		This includeded correcting for the refraction of the light at many locations to contribute to light scattering at a certain measured angle.
	astro.temple.edu /~whit/psize/mie.htm (338 words)

	Pale sunsets - Mie scattering
		They are larger than the wavelengths of visible light and optically they act as Mie scatterers.
		They scatter most light forwards in the general direction of the original beam.
		With the exception of rays directed in a few other specific directions, light of different colours is scattered far more equally than by the smaller Rayleigh scattering particles responsible for vivid sunsets.
	www.sundog.clara.co.uk /atoptics/sunwh.htm (106 words)

	[No title] (Site not responding. Last check: 2007-10-11)
		While both rainbows and glories result from scattering of the incident radiation, the primary rainbow arises from scattering at about 138 degrees from the forward direction, whereas the (backward) glory is associated with scattering very close to the backward direction.
		Both the scalar and the electromagnetic scattering problems are reviewed, the latter providing details about the polarization of the rainbow that the scalar problem cannot address.
		The basis for the complex angular momentum (CAM) theory (used in both types of scattering problem) is a modification of the Watson transform, developed by Watson in the early part of this century in the study of radio wave diffraction around the earth.
	www.cs.odu.edu /~keyes/colloq/adam.html (365 words)

	Mie scattering
		In general, the wave is scattered, to some extent, by the obstacle.
		However, the differential scattering cross section in any particular direction is, in general, different for different circular polarizations of the incident radiation.
		The scattering is predominately backwards, and is independent of the state of polarization of the incident radiation.
	farside.ph.utexas.edu /teaching/jk1/lectures/node103.html (679 words)

	Aerosol Size Distributions from Genetic Inversion
		Inversion of optical scattering cross-section measurements for aerosol size distributions allows critical optical parameters such as aerosol extinction, phase function and lidar ratio to be predicted as a function of wavelength using Mie theory.
		Since the molecular scatter is known, it should be possible in principle to invert the combined scattering data for the polar nephelometer calibration factor, as well as for the aerosol size distribution causing Mie scattering.
		The scattering predicted by Mie theory is calculated at each measurement angle and the "fitness" of this distribution is calculated from its mean absolute error of fit to the measured data.
	www.soest.hawaii.edu /lidar/polar_inversion_13a.htm (3439 words)

	Local Scattering Closure (Site not responding. Last check: 2007-10-11)
		Those inputs are: measured aerosol particle (1) light scattering coefficient (2) refractive index, (3) mass concentration, (4) mass density, and (5) wavelength of light scattered.
		Scattering coefficients [Mm ] at 550 nm and particle diameters < 1 µm were 0.6, 0.7, and 0.8, respectively, when the three platforms were operating as close to each other as possible.
		Data sets describing light scattering coefficients from Cape Grim, Discover, and C-130 need to be carefully evaluated and integrated to see how well the measurements were able to characterize the region.
	saga.pmel.noaa.gov /Field/ace1/hilo/scattering.html (475 words)

	New Page 2 (Site not responding. Last check: 2007-10-11)
		Light scattering by particles offers a non-intrusive way to probe colloidal or aerosol systems and it has a long and venerable history of such application.
		A key feature of our approach is to abandon the scattering angle as the independent variable and use instead the dimensionless variable qR, where q is the scattering wave vector and R is the radius of the sphere.
		The new patterns in Mie scattering will be examined with this perspective to yield a physically pleasing picture.
	www.eng.yale.edu /news/Sorensen-abstract.htm (243 words)

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