Extraordinary optical transmission by interference of diffracted
... generated by the subwavelength apertures, and classical as well as quantum mechanical theory of this process has been developed [16, 17]. In the present paper, based on the newly reported concept of superposition of boundary diffraction waves using a Lloyd’s mirror [18, 19], we present experimental ...
... generated by the subwavelength apertures, and classical as well as quantum mechanical theory of this process has been developed [16, 17]. In the present paper, based on the newly reported concept of superposition of boundary diffraction waves using a Lloyd’s mirror [18, 19], we present experimental ...
time is not relative - The General Science Journal
... frequency of the light is growing). According to this example, we can say that if the frequency of the light that we took as a standard unit of time varies with the direction of relative motion. OBSERVATION In the same way we can demonstrate that in every relation in which we have to use alpha, it m ...
... frequency of the light is growing). According to this example, we can say that if the frequency of the light that we took as a standard unit of time varies with the direction of relative motion. OBSERVATION In the same way we can demonstrate that in every relation in which we have to use alpha, it m ...
Reflection of X-rays with change of frequency
... In the case considered by Brillouin, the sound-waves are those spontaneously existing as the result of the thermal agitation in the substance. The wavelength A* of the sound which is actually operative is automatically determined by the wavelength A of the light and the glancing angle 8 as per equat ...
... In the case considered by Brillouin, the sound-waves are those spontaneously existing as the result of the thermal agitation in the substance. The wavelength A* of the sound which is actually operative is automatically determined by the wavelength A of the light and the glancing angle 8 as per equat ...
Fresnel`s Theory of wave propagation
... Figure 2: Huygens' wavelets. Originating along the fronts of (A) circular waves and (B) plane waves, wavelets recombine to produce the propagating wave front. (C) The diffraction of sound around a corner arising from Huygens' wavelets. ...
... Figure 2: Huygens' wavelets. Originating along the fronts of (A) circular waves and (B) plane waves, wavelets recombine to produce the propagating wave front. (C) The diffraction of sound around a corner arising from Huygens' wavelets. ...
Acoustooptic interaction of two light beams in a paratellurite crystal
... was excited by a piezoelectric transducer made from xcut lithium niobate. The calculation has shown that, when the length of the piezoelectric transducer is l = 1.4 cm and the ultrasonic frequency is f = 180– 190 MHz, the sound divergence is 4 mrad. The acoustic-wave velocity is oriented at the angl ...
... was excited by a piezoelectric transducer made from xcut lithium niobate. The calculation has shown that, when the length of the piezoelectric transducer is l = 1.4 cm and the ultrasonic frequency is f = 180– 190 MHz, the sound divergence is 4 mrad. The acoustic-wave velocity is oriented at the angl ...
CHAPTER 3 Optical Components of Spectrometers
... Optical Rotatory Dispersion • For some substances, the characteristics of optical phenomena such as absorption, refraction, and reflection depend on the polarization of the incident radiation. • Substances that rotate the plane of vibration of plane-polarized radiation are termed optically active. ...
... Optical Rotatory Dispersion • For some substances, the characteristics of optical phenomena such as absorption, refraction, and reflection depend on the polarization of the incident radiation. • Substances that rotate the plane of vibration of plane-polarized radiation are termed optically active. ...
Measuring cellular structure at submicrometer scale with light
... diluting the stock suspension with de-ionized and distilled water to obtain the required optical density. Fig. 3 summarizes the experimental results obtained for polystyrene particles. To demonstrate the symmetry of the A/LSS scattering patterns, the parallel-polarized component of the backscattered ...
... diluting the stock suspension with de-ionized and distilled water to obtain the required optical density. Fig. 3 summarizes the experimental results obtained for polystyrene particles. To demonstrate the symmetry of the A/LSS scattering patterns, the parallel-polarized component of the backscattered ...
\ A/58
... structure 54 has the function of reducing the aperture of the light beam 64. The recording dimension on the recording layer 36 of the compact disc 30 is thus shrunk. the aperture of the laser light beam 64 for data access is shrunk to break through the diffraction restriction. The dimension of mark ...
... structure 54 has the function of reducing the aperture of the light beam 64. The recording dimension on the recording layer 36 of the compact disc 30 is thus shrunk. the aperture of the laser light beam 64 for data access is shrunk to break through the diffraction restriction. The dimension of mark ...
HOLO TEXT
... The principle of reversibility is important to understand because it accounts for some optical phenomena that may plague the holographer. The phenomena in question is referred to as "TOTAL INTERNAL REFLECTION" and occurs when a beam of light moving from a dense material into a less dense material i ...
... The principle of reversibility is important to understand because it accounts for some optical phenomena that may plague the holographer. The phenomena in question is referred to as "TOTAL INTERNAL REFLECTION" and occurs when a beam of light moving from a dense material into a less dense material i ...
Miniaturized modules for light sheet microscopy with low chromatic
... concave-convex lens – of 25 mm focal length (Edmund Optics, #68-160, N-BK7/N-SF5) a numerical aperture AN = 0.08 is attained when using the relation AN = sinα ࣈ tanα = A/2f’ for small angles. The resulting beam waist d = λ/AN = 5.9 μm is defined by the thinnest line described by the distance between ...
... concave-convex lens – of 25 mm focal length (Edmund Optics, #68-160, N-BK7/N-SF5) a numerical aperture AN = 0.08 is attained when using the relation AN = sinα ࣈ tanα = A/2f’ for small angles. The resulting beam waist d = λ/AN = 5.9 μm is defined by the thinnest line described by the distance between ...
Light
Light is electromagnetic radiation within a certain portion of the electromagnetic spectrum. The word usually refers to visible light, which is visible to the human eye and is responsible for the sense of sight. Visible light is usually defined as having wavelengths in the range of 400–700 nanometres (nm), or 6993400000000000000♠400×10−9 m to 6993700000000000000♠700×10−9 m, between the infrared (with longer wavelengths) and the ultraviolet (with shorter wavelengths). This wavelength means a frequency range of roughly 430–750 terahertz (THz). Often, infrared and ultraviolet are also called light.The main source of light on Earth is the Sun. Sunlight provides the energy that green plants use to create sugars mostly in the form of starches, which release energy into the living things that digest them. This process of photosynthesis provides virtually all the energy used by living things. Historically, another important source of light for humans has been fire, from ancient campfires to modern kerosene lamps. With the development of electric lights and of power systems, electric lighting has all but replaced firelight. Some species of animals generate their own light, called bioluminescence. For example, fireflies use light to locate mates, and vampire squids use it to hide themselves from prey.Primary properties of visible light are intensity, propagation direction, frequency or wavelength spectrum, and polarisation, while its speed in a vacuum, 299,792,458 meters per second, is one of the fundamental constants of nature. Visible light, as with all types of electromagnetic radiation (EMR), is experimentally found to always move at this speed in vacuum.In physics, the term light sometimes refers to electromagnetic radiation of any wavelength, whether visible or not. In this sense, gamma rays, X-rays, microwaves and radio waves are also light. Like all types of light, visible light is emitted and absorbed in tiny ""packets"" called photons, and exhibits properties of both waves and particles. This property is referred to as the wave–particle duality. The study of light, known as optics, is an important research area in modern physics.