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Physics of light

Xem 1-20 trên 90 kết quả Physics of light
  • “Diffraction” of light can be understood as any deviation of light rays from their geometrical propagation line (that is straight in a homogeneuos material) An example (shown in the picture):The edge of shadow is never perfectly sharp. Some light appears in the geometrical shadow, and there are dark and light fringers in the area of illumination.

    pdf38p thanhan 22-07-2009 81 15   Download

  • Interference and diffraction of light are arguments for wave charactiristics of light. We know that there are two types of wave processes: transverse & longitutional waves →to what are light waves belong ? Study of polarization of light makes clear that This conclusion is in according to the concept that light waves are electromagnetic waves with a definte band of frequencies. Recall that electromagnetic waves are transervse waves in which e-vectors & m-vectors oscillate in such follwing directions...

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  • Monte Carlo calculation method can be used for resolving particle transport in matter, and particularly the transport of neutrons in the environment of the reactor core. The method has become more efficient because of high accuracy of updated nuclear data and fast development of advanced super-computing system. In this work, we would like to present calculations for kinematic characteristics of neutron transport in a typical configuration of the pressurized water reactor (PWR) fuel assembly based on the Monte-Carlo simulation method.

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  • At the end of the 19-th century, physics was at its most confidence situation. Classical phyics, as formulated in Newton’s law of mechanics and Maxwell’s theory of electromagnetism, have proved very successful in solving every problem. →At that time there seemed to be no question for which physics could not provide an answer !!! But then it came as a great shock when some simple phenomena were observed which could not be explained by classical physics →a new theory, quantum theory, was developed at the beginning of the 20-th century...

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  • (bq) part 1 book "physical foundations of cosmology" has contents: kinematics and dynamics of an expanding universe, propagation of light and horizons, the hot universe, the very early universe.

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  • The sign of the chirality per unit energy of a HE or EH mode is the same as or opposite to, respectively, the sign of the phase circulation direction. When the fiber radius is large enough, the field in a quasicircularly polarized hybrid mode can be superchiral outside the fiber. In particular, outside a fiber with a radius of 600 nm, the fields in the quasicircularly polarized HE11, HE21, and HE31 modes are superchiral.

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  • Flipped classroom is a blended learning strategy in which the conventional notion of classroom-based learning is inverted, so that students can acquire knowledge through given materials before class, with classroom time then being used to practice and apply concepts and ideas through interaction with peers and teachers as well as to solve some difficult problems.

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  • n this work, we review recent research works concerning multiple EIT and some related applications such as controlling group velocity of light, giant Kerr nonlinearity, optical bistability. The special attention of the review is also on analytical interpretations of the results to give physics insight and suitable applications. From an experimental point of view, the latest development for measuring multiple EIT spectrum and its dispersion in hot medium is presented and compared to the theoretical analytical representations.

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  • Dramatic progress has been made in all branches of physics since the National Research Council's 1986 decadal survey of the field. The Physics in a New Era series explores these advances and looks ahead to future goals. The series includes assessments of the major subfields and reports on several smaller subfields, and preparation has begun on an overview volume on the unity of physics, its relationships to other fields, and its contributions to national needs.

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  • Ancient Hebrew and Christian tradition relates that the universe was created in six days, following which there was a day of rest. What the old chronicles never recorded was that, on the eighth day, the Creator must have dropped back into the lab to do some tidying up. Only then, coming across his rough notes for Maxwell’s and the acoustic wave equations, did the thought occur that the creation of light and sound could be logically extrapolated to x-rays and ultrasound.

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  • Physical aspects light, depth, and chemistry of the open ocean, microbes and plants essential organisms in the open ocean, sponges, cnidarians, and worms animals of the ocean surface and seafloor, mollusks, crustaceans and echinoderms advanced invertebrates of the open ocean,... is the main content of the book The open ocean. Invite you to consult

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  • The physical basis of color exists in the interaction of light with matter, both outside and inside the eye. The sensation of color depends on physiological activity in the visual system that begins with the absorption of light in photoreceptors located in the retina of the eye and ends with patterns of biochemical activity in the brain. Perceived color can be described by the color names white, gray, black, yellow, orange, brown, red, green, blue, purple, and pink. These 11 basic color terms have unambiguous referents in all fully developed languages.

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  • Ads for one Macintosh computer bragged that it could do an arithmetic calculation in less time than it took for the light to get from the screen to your eye. We find this impressive because of the contrast between the speed of light and the speeds at which we interact with physical objects in our environment. Perhaps it shouldn’t surprise us, then, that Newton succeeded so well in explaining the motion of objects, but was far less successful with the study of light.

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  • Color is a psychological property of our visual experiences when we look at objects and lights, not a physical property of those objects or lights, color is the result of interaction between physical light in the environment and our visual system. To help you understand more about this issue, invite you to consult the lecture content "Color". Hope this is useful references for you.

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  • The first historical test on the theory has been the deflection of light grazing the solar surface (Eddington 1919): the compatibility of the theory with this first experiment together with its ability to explain the magnitude of the perihelion advance of Mercury contributed strongly to boost acceptance and worldwide knowledge.

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  • This method allows production of fine white powder at low temperature with high efficiency. XRD has been used to determine the structure of the prepared nanopowders. The obtained materials exhibit sufficient sensibility to UV radiation and may be useful in UV light measurements.

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  • This book is designed to serve as a first course in an electrical engineering or an electrical engineering and computer science curriculum, providing students at the sophomore level a transition from the world of physics to the world of electronics and computation. The book attempts to satisfy two goals: Combine circuits and electronics into a single, unified treatment, and establish a strong connection with the contemporary worlds of both digital and analog systems

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  • Electric charge and a measure for the quantity of charge Any household electrical appliance – be it a light bulb, a motor, or a television set – has two contacts which have to be plugged in to get the device to operate. This common characteristic, that an electrical apparatus must have two wires connecting it to a source of electricity, gave the rise in the eighteenth century to the idea that when an electrical device is working, something is moving through it. That something is called electric charge. When you pull out a plug, turn off a switch, or disconnect...

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  • It has been known from the previous chapter that light, and in general, electromagnetic waves have particle behavior. Some latter time than the quantum theory of light, it was discovered that particles show also wavelike behavior. The wave-particle duality of matter is the fundamental concept of modern physics Newton’s classical physics should be replaced by the new mechanics which is able to describe the wave nature of particles

    pdf34p thanhan 22-07-2009 122 16   Download

  • Essentials of Applied Physicsby Royal M. FryePublisher: Prentice Hall 1947ISBN/ASIN: 1406703702Number of pages: 346Description:This textbook is designed to meet the needs of schools where a more concise course is given than is found in the average college physics textbook. The orthodox arrangement of, first, mechanics, then sound, heat, electricity, and light is followed. Numerous illustrative pro......

    pdf346p chieckhanpieu 25-03-2013 63 13   Download

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