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Newton`s Rings - Manchester HEP
Newton`s Rings - Manchester HEP

... interference of light will be used to determine the wavelength,  , of a light source. The interference fringe system here is a pattern of concentric circles, the diameter of which you will measure with a travelling microscope (which has a Vernier scale). If a clean convex lens is placed on a clean ...
chapter 22 - Cobb Learning
chapter 22 - Cobb Learning

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FA15Lec16 Optical Trap

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... that our numerical calculations are in good agreement with the van Cittert – Zernike result. Our calculations demonstrate that the spectral degree of coherence of the f ield generated by an incoherent source takes on its far-zone behavior at distances immediately beyond the near zone of the source a ...
Chapter 35 – Interference and Diffraction
Chapter 35 – Interference and Diffraction

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... depend upon the modal distribution of optical power within the optical fibre - and will only be a fraction of the total light transmitted (although more severe for singlemode than multimode optical fibres). Macro-bends may be identified by such losses when measured by an OTDR, but the losses may be ...
lab9 - University of Puget Sound
lab9 - University of Puget Sound

... What happens to a well-focused image when a portion of the lens is blocked? Does the left side of the image disappear when the left half of the lens is covered? Or the right half, or what? Explain your observations. Describe what happens when the object distance is less than the focal length. Can yo ...
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... Isolator: used in systems at the output of amplifiers and lasers to prevent reflections Filter: to multiplex and demultiplex wavelengths in a WDM system, and to provide equalization of the gain and filtering of noise in optical amplifier MUX & DEMUX: MUX combines signals at different wavelengths on ...
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Universal Description of Spherical Aberration Free Lenses

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the P3 `bus stop`

... Because ultrasound waves partially reflect at the boundary between two media, they are used to scan foetuses to check up on their development. The time it takes for a narrow beam of ultrasound to return to a detector is measured and used to produce an image. The narrower the beam, the more detail is ...
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Velocity of sound in liquids

... Fig. 2 shows the relationship between variations in sound pressure %p and the location x for four phases of a stationary wave. The refractive index of the liquid also changes because of the pressure variations, and the change in refractive index %n can be regarded as proportional to the pressure var ...
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Optical Term Definitions

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1. Which of the following statement are true about "LED life" term?

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... parallelograms meet with obtuse angles. There will be two blunt corners. In a uniaxial crystal there is only one optic axis. There some other crystals with more than one optic axis and they may be called biaxial crystals. It should be remembered that, optic axis is not a single line. It is a directi ...
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Exam 3 Solutions
Exam 3 Solutions

... on  the  other  side  of  the  mirror  when  the  object  is  inside  the  focal   point.  (You  can  also  derive  this  by  following  the  incoming  rays     which  intersect  the  top  of  the  object  parallel  to  the  cen ...
Building The optimal optical guitar
Building The optimal optical guitar

... M. Norgia and A. Pesatori, “Laser Pitch-Detection for Electric Guitar,” in Proc. IEEE Instrumentation and Measurement Technology Conference, May 2010. Mark French and Keith Lewis, “Modal Analysis of an Acoustic Guitar,” presented at the 13th Int. Modal Analysis Conf., Nashville, Tennessee, 1995. Pau ...
lab sheet - Faculty of Engineering
lab sheet - Faculty of Engineering

... Figure 2(d) Schematic view of Brewster angle experiment 3) Set the rotation stage (RSP-IT) angle to 0. Rotate the stage so that the beam reflected from the slide is sent back along the input beam (normal incidence). (Note: You can use the index card with the hole in it to set the beam). Tighten the ...
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Retroreflector



A retroreflector (sometimes called a retroflector or cataphote) is a device or surface that reflects light back to its source with a minimum of scattering. In a retroreflector an electromagnetic wavefront is reflected back along a vector that is parallel to but opposite in direction from the wave's source. The angle of incidence at which the device or surface reflects light in this way is greater than zero, unlike a planar mirror, which does this only if the mirror is exactly perpendicular to the wave front, having a zero angle of incidence.
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