HERCULES_Neutron_reflectivity
... Fig. 5 shows four scattering length density profiles which would give rise to the same reflectivity within the kinematic approximation of reflection[4]. In practise it is usually possible to distinguish between the a/b and c/d pairs from knowledge of the properties of the bulk media involved, but de ...
... Fig. 5 shows four scattering length density profiles which would give rise to the same reflectivity within the kinematic approximation of reflection[4]. In practise it is usually possible to distinguish between the a/b and c/d pairs from knowledge of the properties of the bulk media involved, but de ...
Trends in Optical Fiber Sensors - IEEE Bombay Section Symposium
... The first attempts at guiding light on the basis of total internal reflection in a medium dates to 1841 by Daniel Colladon. He attempted to couple light from an arc lamp into a stream of water In 1930 the medical student Heinrich Lamm of Munich produced the first image transmitting fiber ...
... The first attempts at guiding light on the basis of total internal reflection in a medium dates to 1841 by Daniel Colladon. He attempted to couple light from an arc lamp into a stream of water In 1930 the medical student Heinrich Lamm of Munich produced the first image transmitting fiber ...
Optical properties of the human tissue
... method is widely used in tissue optics for processing the experimental data of spectrophotometry with integrating spheres. This method allows one to determine the absorption and the reduced scattering coefficients of a turbid media from the measured values of the total transmittance and the diffuse ...
... method is widely used in tissue optics for processing the experimental data of spectrophotometry with integrating spheres. This method allows one to determine the absorption and the reduced scattering coefficients of a turbid media from the measured values of the total transmittance and the diffuse ...
Fluorescence Fidelity Depends on Filters
... laser excitation source is reflected off of the sample-glass interface and directed towards the emission path. Stray light from room lighting does not present a significant problem for confocal fluorescence microscopy, due to the fact that small diameter pinholes are used. However, this source of op ...
... laser excitation source is reflected off of the sample-glass interface and directed towards the emission path. Stray light from room lighting does not present a significant problem for confocal fluorescence microscopy, due to the fact that small diameter pinholes are used. However, this source of op ...
The basic purpose of a lens of any kind is to collect the light
... the scattering angle of light passing through it – essentially how much rays are bent or refracted - and it is function of the wavelength of light. As white light enters a lens, each wavelength takes a slightly different path. This phenomenon is called dispersion and produces the splitting of white ...
... the scattering angle of light passing through it – essentially how much rays are bent or refracted - and it is function of the wavelength of light. As white light enters a lens, each wavelength takes a slightly different path. This phenomenon is called dispersion and produces the splitting of white ...
Document
... The condition below assures a ray will have enough fiber to bend back towards the center axis: ...
... The condition below assures a ray will have enough fiber to bend back towards the center axis: ...
F - mjburns.net
... A thin lens consists of a piece of glass or plastic, ground so that each of its two refracting surfaces is a segment of either a sphere or a plane Lenses are commonly used to form images by refraction in optical instruments (cameras, telescopes, etc.) ...
... A thin lens consists of a piece of glass or plastic, ground so that each of its two refracting surfaces is a segment of either a sphere or a plane Lenses are commonly used to form images by refraction in optical instruments (cameras, telescopes, etc.) ...
C-Point singularities in Poincare beams
... a field of ellipses whose semi-major axis rotates about the C-point. This divides the C-points into two classes: those that rotate with the angular coordinate about the C-point, and those that rotate counter to it. An index representing this rotation about the C-point is IC . Since ellipses’ axes ar ...
... a field of ellipses whose semi-major axis rotates about the C-point. This divides the C-points into two classes: those that rotate with the angular coordinate about the C-point, and those that rotate counter to it. An index representing this rotation about the C-point is IC . Since ellipses’ axes ar ...
YourFirstTelescope
... The focal length of the telescope is determined by the light bending design of the objective lens or the primary mirror and is measured from the point where light bending or reflecting begins and ends at the focal plane where the light rays cross. These concepts are discussed in more detail under th ...
... The focal length of the telescope is determined by the light bending design of the objective lens or the primary mirror and is measured from the point where light bending or reflecting begins and ends at the focal plane where the light rays cross. These concepts are discussed in more detail under th ...
Individually Addressable Submicron Scale Light
... fabricated into five parallel and separate fingers with widths down to 0.9 µm and lengths of several mm. A Ga:In tip controlled by a micrometer was employed as a liftable electrode. Since the Ga:In alloy does not wet the film surface well, it was quite easy to make contact within a radius of a few t ...
... fabricated into five parallel and separate fingers with widths down to 0.9 µm and lengths of several mm. A Ga:In tip controlled by a micrometer was employed as a liftable electrode. Since the Ga:In alloy does not wet the film surface well, it was quite easy to make contact within a radius of a few t ...
Optical Indicatrix
... Recall that if a cleavage rhomb of calcite is placed on a dot or other image on a piece of paper, two images appear, each composed of planepolarised light vibrating at right angles to the other. The light passing up through the calcite can be considered to be incident at right angles. Based on Snell ...
... Recall that if a cleavage rhomb of calcite is placed on a dot or other image on a piece of paper, two images appear, each composed of planepolarised light vibrating at right angles to the other. The light passing up through the calcite can be considered to be incident at right angles. Based on Snell ...
Atmospheric optics
Atmospheric optics deals with how the unique optical properties of the Earth's atmosphere cause a wide range of spectacular optical phenomena. The blue color of the sky is a direct result of Rayleigh scattering which redirects higher frequency (blue) sunlight back into the field of view of the observer. Because blue light is scattered more easily than red light, the sun takes on a reddish hue when it is observed through a thick atmosphere, as during a sunrise or sunset. Additional particulate matter in the sky can scatter different colors at different angles creating colorful glowing skies at dusk and dawn. Scattering off of ice crystals and other particles in the atmosphere are responsible for halos, afterglows, coronas, rays of sunlight, and sun dogs. The variation in these kinds of phenomena is due to different particle sizes and geometries.Mirages are optical phenomena in which light rays are bent due to thermal variations in the refraction index of air, producing displaced or heavily distorted images of distant objects. Other optical phenomena associated with this include the Novaya Zemlya effect where the sun appears to rise earlier or set later than predicted with a distorted shape. A spectacular form of refraction occurs with a temperature inversion called the Fata Morgana where objects on the horizon or even beyond the horizon, such as islands, cliffs, ships or icebergs, appear elongated and elevated, like ""fairy tale castles"".Rainbows are the result of a combination of internal reflection and dispersive refraction of light in raindrops. Because rainbows are seen on the opposite side of the sky as the sun, rainbows are more prominent the closer the sun is to the horizon due to their greater distance apart.