Mimicking celestial mechanics in metamaterials ARTICLES *
... metal nanoparticles19 and Bose–Einstein condensates20 . Furthermore, close to the centre singularity, the ray picture fails and one cannot trust the predictions as per Fig. 1b,c. However, experimental observation of the main optical phenomena related to systems such as PBH or gravitational black hol ...
... metal nanoparticles19 and Bose–Einstein condensates20 . Furthermore, close to the centre singularity, the ray picture fails and one cannot trust the predictions as per Fig. 1b,c. However, experimental observation of the main optical phenomena related to systems such as PBH or gravitational black hol ...
Efficiency enhancement in a light
... FIG. 4. Scanning electron micrographs of 共a兲 center AuZn electrode surrounded by triangular lattice PC, and 共b兲 airholes with many nanometer-size projections on the bottom. ...
... FIG. 4. Scanning electron micrographs of 共a兲 center AuZn electrode surrounded by triangular lattice PC, and 共b兲 airholes with many nanometer-size projections on the bottom. ...
A301.Ch5.Telescopes
... mirror constantly and rapidly adjusts its orientation and shape (sometimes thousands of times per second!) in order to compensate for scintillation. (See discussion sec. 5.4) Another way is to just get above the earth’s atmosphere: space telescopes (Hipparcos, IRAS, Hubble Space Telescope HST, SIRTF ...
... mirror constantly and rapidly adjusts its orientation and shape (sometimes thousands of times per second!) in order to compensate for scintillation. (See discussion sec. 5.4) Another way is to just get above the earth’s atmosphere: space telescopes (Hipparcos, IRAS, Hubble Space Telescope HST, SIRTF ...
Extinction Coefficient Measurements of Turbid Media
... A 1 mW He–Ne laser source emitting at 632.8 nm operating in continuous wave (cw) [which has proved suitable for low-power laser interaction with matter], was directed horizontally to a cell (glass box) of thickness 25 mm containing the sample . The collimated transmitted (unscattered ) light was det ...
... A 1 mW He–Ne laser source emitting at 632.8 nm operating in continuous wave (cw) [which has proved suitable for low-power laser interaction with matter], was directed horizontally to a cell (glass box) of thickness 25 mm containing the sample . The collimated transmitted (unscattered ) light was det ...
20170327_AH_Interference
... Superposition and interference is what separates waves from particles. The other wave properties like diffraction can be carried out by particles. Waves can pass through one another without being affected in any way. So if two stones are dropped into a calm pond, two sets of circular waves are produ ...
... Superposition and interference is what separates waves from particles. The other wave properties like diffraction can be carried out by particles. Waves can pass through one another without being affected in any way. So if two stones are dropped into a calm pond, two sets of circular waves are produ ...
What you will need to remember from year 10…
... Words – communications, internally, large, transparent, signal ...
... Words – communications, internally, large, transparent, signal ...
Modellistica 3D di Componenti Cellulari
... Hooke had discovered plant cells -- more precisely, what Hooke saw were the cell walls in cork tissue. In fact, it was Hooke who coined the term "cells": the boxlike cells of cork reminded him of the cells of a monastery. Hooke also reported seeing similar structures in wood and in other plants. I ...
... Hooke had discovered plant cells -- more precisely, what Hooke saw were the cell walls in cork tissue. In fact, it was Hooke who coined the term "cells": the boxlike cells of cork reminded him of the cells of a monastery. Hooke also reported seeing similar structures in wood and in other plants. I ...
3-D wave structuring and applications
... •High spatial parallelism and spatial bandwidth. •Not compatible with high temporal bandwidth due to skew ...
... •High spatial parallelism and spatial bandwidth. •Not compatible with high temporal bandwidth due to skew ...
Electromagnetic forces and torques in nanoparticles irradiated by
... multipole formalism to calculate both torques and forces, which can be applied to complex geometries involving more than one particle, as illustrated below for forces acting on metallic spheres in the presence of neighboring particles of different shapes. For practical applications in the context of ...
... multipole formalism to calculate both torques and forces, which can be applied to complex geometries involving more than one particle, as illustrated below for forces acting on metallic spheres in the presence of neighboring particles of different shapes. For practical applications in the context of ...
Reflection of X-rays with change of frequency
... is small compared with that of light, this change of frequency is also small. Nevertheless, it has been established experimentally for the case of lightscattering in liquids, and more recentlyS also in crystals (Raman and Venkateswaran 1938). It should be remarked, that the optical principles on whi ...
... is small compared with that of light, this change of frequency is also small. Nevertheless, it has been established experimentally for the case of lightscattering in liquids, and more recentlyS also in crystals (Raman and Venkateswaran 1938). It should be remarked, that the optical principles on whi ...
Lab 11 - Optical Ray Tracing
... Ray tracing is a way of generating optical path in a system based on the laws of geometric optics. By successively applying the laws of reflection and refraction on the optical surface (lens, mirror, screen, iris, etc.), a light ray can be propagated from the source to they target and thereby genera ...
... Ray tracing is a way of generating optical path in a system based on the laws of geometric optics. By successively applying the laws of reflection and refraction on the optical surface (lens, mirror, screen, iris, etc.), a light ray can be propagated from the source to they target and thereby genera ...
Section 9.4: Light: Wave or Particle?
... Grimaldi’s beliefs about diffraction of light. Newton argued that Grimaldi’s observations of light diffraction were a result of collisions between light particles at the edges of the slit, and not a result of waves of light spreading out. By the time Newton wrote Opticks, his book on light, he expla ...
... Grimaldi’s beliefs about diffraction of light. Newton argued that Grimaldi’s observations of light diffraction were a result of collisions between light particles at the edges of the slit, and not a result of waves of light spreading out. By the time Newton wrote Opticks, his book on light, he expla ...
Chapter 12: Light
... • The colors of the visible spectrum differ from one another in terms of wavelength • Each combination of wavelengths has its own special sense of color • When white light strikes most objects certain colors are absorbed and certain colors are reflected, the reflected light is the color you see • Th ...
... • The colors of the visible spectrum differ from one another in terms of wavelength • Each combination of wavelengths has its own special sense of color • When white light strikes most objects certain colors are absorbed and certain colors are reflected, the reflected light is the color you see • Th ...
Introduction Reflection of Light
... reduced real images. A convex mirror forms only reduced virtual images. Refraction, or bending, of light occurs when light passes from one medium to another at an angle other than 90° and the speed of light changes in the new medium. The greater the change in speed, the more light bends. Lenses are ...
... reduced real images. A convex mirror forms only reduced virtual images. Refraction, or bending, of light occurs when light passes from one medium to another at an angle other than 90° and the speed of light changes in the new medium. The greater the change in speed, the more light bends. Lenses are ...
Slow Light - Duke Physics
... ng is the group index of the material. We see that ng differs from the phase index by a term that depends on the dispersion of the refractive index dn/dω. Slow-light effects invariably make use of the rapid variation of refractive index that occurs in the vicinity of a material resonance. Slow light ...
... ng is the group index of the material. We see that ng differs from the phase index by a term that depends on the dispersion of the refractive index dn/dω. Slow-light effects invariably make use of the rapid variation of refractive index that occurs in the vicinity of a material resonance. Slow light ...
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.