Designer materials render objects nearly invisible to
... Guided atom laser. A trapped cloud of atoms chilled into a Bose–Einstein condensate is a single coherent structure. When extracted from the trap and allowed to propagate, it acts like a laser beam, except that the coherent waves are of matter rather than light. In a typical atom laser, the atoms are ...
... Guided atom laser. A trapped cloud of atoms chilled into a Bose–Einstein condensate is a single coherent structure. When extracted from the trap and allowed to propagate, it acts like a laser beam, except that the coherent waves are of matter rather than light. In a typical atom laser, the atoms are ...
em-gravit. waves - at www.arxiv.org.
... independent pairs, one for the electric and one for the magnetic field. In 1831, in a series of experiments, Michael Faraday discovered something interesting: Whenever a magnetic field changes with time, an electric field emerges! Although there were no experimental indications at the time, Maxwell ...
... independent pairs, one for the electric and one for the magnetic field. In 1831, in a series of experiments, Michael Faraday discovered something interesting: Whenever a magnetic field changes with time, an electric field emerges! Although there were no experimental indications at the time, Maxwell ...
Waves & Oscillations Physics 42200 Spring 2014 Semester Lecture 30 – Electromagnetic Waves
... Light is an Electromagnetic Wave Speed of light was measured by Fizeau in 1849: 5 = 315,300 km/s Maxwell wrote: This velocity is so nearly that of light, that it seems we have strong reason to conclude that light itself (including radiant heat, and other radiations if any) is an electromagnetic d ...
... Light is an Electromagnetic Wave Speed of light was measured by Fizeau in 1849: 5 = 315,300 km/s Maxwell wrote: This velocity is so nearly that of light, that it seems we have strong reason to conclude that light itself (including radiant heat, and other radiations if any) is an electromagnetic d ...
Document
... Maxwell showed theoretically that when a charge accelerates the charge generates an electromagnetic wave. The moving charge generates both an electric and magnetic field that are at right angles to each other. This was proved experimentally by Hertz who detected the waves created when an inductor - ...
... Maxwell showed theoretically that when a charge accelerates the charge generates an electromagnetic wave. The moving charge generates both an electric and magnetic field that are at right angles to each other. This was proved experimentally by Hertz who detected the waves created when an inductor - ...
Do Solitonlike Self-Similar Waves Exist in Nonlinear Optical Media?
... phase chirp of each wave. The main difference between our self-similar solitary waves and those obtained in Refs. [11– 13] is that the former can be realized in practice under ...
... phase chirp of each wave. The main difference between our self-similar solitary waves and those obtained in Refs. [11– 13] is that the former can be realized in practice under ...
Optical diffraction tomography for high resolution live cell imaging
... briefly introduce Wolf’s original theory and Devaney's modification to adopt the first Rytov approximation [25]. Based on this section, we will explain the experimental implementation of these theories in section 4. With scalar field assumption, the propagation of light field, U ( R) , through the m ...
... briefly introduce Wolf’s original theory and Devaney's modification to adopt the first Rytov approximation [25]. Based on this section, we will explain the experimental implementation of these theories in section 4. With scalar field assumption, the propagation of light field, U ( R) , through the m ...
PART-B
... 3. Distinguish between spontaneous and stimulated emission. 4. What is meant by holography? 5. Distinguish between step-index and graded index fibre. 6. Calculate the numerical aperture and acceptance angle of a fibre with the core index of 1.54 and cladding 1.50. 7. What is the principle of electro ...
... 3. Distinguish between spontaneous and stimulated emission. 4. What is meant by holography? 5. Distinguish between step-index and graded index fibre. 6. Calculate the numerical aperture and acceptance angle of a fibre with the core index of 1.54 and cladding 1.50. 7. What is the principle of electro ...
X-Ray Free Electron Lasers - Stanford Synchrotron Radiation
... molecular structure of a single protein or virus. These are some of the new exciting experiments that a novel radiation source, the X-ray free-electron laser, will make possible. The free-electron laser has been developed over many years, starting from the first one built at Stanford by John Madey a ...
... molecular structure of a single protein or virus. These are some of the new exciting experiments that a novel radiation source, the X-ray free-electron laser, will make possible. The free-electron laser has been developed over many years, starting from the first one built at Stanford by John Madey a ...
EE3321 ELECTROMAGNETIC FIELD THEORY
... orthogonal components Ex and Ey have exactly the same amplitude and are exactly ninety degrees out of phase. In this case one component is zero when the other component is at maximum or minimum amplitude. ...
... orthogonal components Ex and Ey have exactly the same amplitude and are exactly ninety degrees out of phase. In this case one component is zero when the other component is at maximum or minimum amplitude. ...
Total internal reflection photonic crystal prism
... The presence of an evanescent field is the signature of near-field optics. There are two main characteristics of these waves that distinguish them from propagating waves. The first is their intensity profile, which exponentially decays away from the source that created them. This means that they are ...
... The presence of an evanescent field is the signature of near-field optics. There are two main characteristics of these waves that distinguish them from propagating waves. The first is their intensity profile, which exponentially decays away from the source that created them. This means that they are ...
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... axis of the beam) that can be ~200nm, hence allowing a new different ‘layer’ to be added every ~200nm. With the approach presented here, the height of the polymerized region depends on the DMD pattern that is used, but has generally been observed to be >10µm, and so the point-by-point approach of pr ...
... axis of the beam) that can be ~200nm, hence allowing a new different ‘layer’ to be added every ~200nm. With the approach presented here, the height of the polymerized region depends on the DMD pattern that is used, but has generally been observed to be >10µm, and so the point-by-point approach of pr ...
Lateral shearing interferometry for EUV optical testing
... such that vectors fi Є F are not mapped by D and thus represent forbidden solutions (solutions that cannot come from a real wavefront). ...
... such that vectors fi Є F are not mapped by D and thus represent forbidden solutions (solutions that cannot come from a real wavefront). ...
Question Bank Physics Class 12
... 5. It two point charges q1 and q2 are 3m apart and their combined charge is 20μC. If one repels the other with a force of 0.075 N, What are the two charges? 6. Two charges 3 X 10-8 C and -2 X 10-8 C are located 15 cm apart. At what point on the line joining the two charges is the electrical potentia ...
... 5. It two point charges q1 and q2 are 3m apart and their combined charge is 20μC. If one repels the other with a force of 0.075 N, What are the two charges? 6. Two charges 3 X 10-8 C and -2 X 10-8 C are located 15 cm apart. At what point on the line joining the two charges is the electrical potentia ...
Diffraction
Diffraction refers to various phenomena which occur when a wave encounters an obstacle or a slit. In classical physics, the diffraction phenomenon is described as the interference of waves according to the Huygens–Fresnel principle. These characteristic behaviors are exhibited when a wave encounters an obstacle or a slit that is comparable in size to its wavelength. Similar effects occur when a light wave travels through a medium with a varying refractive index, or when a sound wave travels through a medium with varying acoustic impedance. Diffraction occurs with all waves, including sound waves, water waves, and electromagnetic waves such as visible light, X-rays and radio waves.Since physical objects have wave-like properties (at the atomic level), diffraction also occurs with matter and can be studied according to the principles of quantum mechanics. Italian scientist Francesco Maria Grimaldi coined the word ""diffraction"" and was the first to record accurate observations of the phenomenon in 1660.While diffraction occurs whenever propagating waves encounter such changes, its effects are generally most pronounced for waves whose wavelength is roughly comparable to the dimensions of the diffracting object or slit. If the obstructing object provides multiple, closely spaced openings, a complex pattern of varying intensity can result. This is due to the addition, or interference, of different parts of a wave that travels to the observer by different paths, where different path lengths result in different phases (see diffraction grating and wave superposition). The formalism of diffraction can also describe the way in which waves of finite extent propagate in free space. For example, the expanding profile of a laser beam, the beam shape of a radar antenna and the field of view of an ultrasonic transducer can all be analyzed using diffraction equations.