Both XRD and WDS are analysis equipment using Bragg diffraction law. Explain the differences in applying the diffraction law
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Both XRD and WDS are analysis equipment using Bragg diffraction law. Explain the differences in applying the diffraction law.
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- You measure the distance between the finges of a diffraction pattern as follows: Distance (mm): 3.01, 3.27, 3.28 You measure the distance eight additional times to obtain the following ten values: Distance (mm): 3.01, 3.27, 3.28, 3.31, 3.16, 3.17, 3.15, 3.25, 3.18, 1.46 What values for the distance and uncertainty would you report using the first three measurements and the entire set of ten measurements? Group of answer choices First three: (3.22 ± 0.03) mm, All ten: (3.22 ± 0.02) mm First three: (3.19 ± 0.09) mm, All ten: (3.0 ± 0.2) mm First three: (3.186667 ± 0.07216237) mm, All ten: (3.201000 ± 0.02613236) mm First three: (3.216667 ± 0.02880329) mm, All ten: (3.216000 ± 0.02379916) mm First three: (3.240000 ± 0.04082483) mm, All ten: (3.217000 ± 0.02702036) mm First three: (3.24 ± 0.04) mm, All ten: (3.22 ± 0.03) mmQuestion A4 The mineral schreibersite is often found in iron-nickel meteorites. One sample was found to have a body-centred tetragonal structure with a = 9.0168 Å and c = 4.4491 Å. Calculate the scattering angle and the multiplicity for the first (lowest 0) diffraction peak, using Cu Ka radiation of wavelength X = 1.5406 Å.Question A2 Red light of vacuum wavelength 650 nm is travelling in a non-magnetic dielectric glass of refrac- tive index ng = 1.60. Calculate the impedance of the glass, the wavelength of light in the glass, and the critical angle 0c for total internal reflection at a glass-air interface. Question A3 Light is incident from air onto a horizontal surface of water of refractive index nw = 1.33. Calculate the Brewster angle at which the reflectance for the TM polarisation is zero. Also, cal- culate the power reflection coefficient RTE for TE-polarised light incident at this Brewster angle.
- Light from a He-Ne laser of wavelength is 633 nm passes through a circular aperture of diameter 114 mm. The width of the central maximum on the screen is 54.2 mm. How far is a screen from the circular aperture? A. 1.54 m B. 4.88 m C. 8.00 m D. 9.76 m E. 4.00 mI Review I Constants An astronomer who is studying the light from a galaxy has identified the spectrum of hydrogen but finds that the wavelengths are somewhat shifted from those found in the laboratory. In the lab, the H., line in the hydrogen spectrum has a wavelength of 656.3 nm. The astronomer is using a transmission diffraction grating having 5608 lines/cm in the first order and finds that the first bright fringe for the H, line occurs at + 23.41" from the central spot. How fast is the galaxy moving? Express your answer In m/a and as a percentage of the speed of light. Is the galaxy • Part C Find the wavelength of the Ha spectral line in the received light. Express your answer with the appropriate units. • View Available Hint(s) moving toward us or away from us? AR = Value Units Submit Part D Rewrite the equation of Doppler effect as a formula for the velocity v of the galaxy in terms of the received wavelength and the wavelength emitted by the Source. Express your answer in terms…A double-slit arrangement produces interference fringes that have an angular separation of 5.14 × 10-3 rad for light with a wavelength of A = 429 nm. For what wavelength would the angular separation be 14.6% greater? Number i Units
- When illuminating the observation screen directly, without any slits, you notice that the laser has a spread, meaning that the light on the screen becomes larger as you increase the distance between you and the screen. Determine the angular spread of the 710.5 nm wavelength laser beam if the circular aperture of the laser is 0.7 mm in diameter. Enter your answer in milli-rad with 2 decimal place precisionIf you can read the bottom row of your doctor's eye chart, your eye has a resolving power of one arcminute, equal to 1.67×10−2 degrees. if this resolving power is diffraction-limited, to what effective diameter of your eye's optical system does this correspond? Use Rayleigh's criterion and assume that the wavelength of the light is 540 nmnm . Express your answer in millimeters to three significant figures. in nm3. A Cu target emits an X-ray line of wavelength = 1.54 Å. a) Given that the Bragg angle for reflection from the (111) planes in Al is 19.2°, compute the interplanar distance for these planes. Recall that aluminum has an fcc structure. b) Knowing that the density and atomic weight of Al are, respectively, 2.7 g/cm3 and 27.0, compute the value of Avogadro's number.
- Incident nA = SQ + QT (3.19) na = dnki sin 0+ dnki sin 0 (3.20) = 2drki sin 0 H.W. Derive equation 3.20 (Bragg's Law) from equation 3.19 using trigonometry formulas.** 38. Two plastic plates (index of refraction n = 1.3) are separated by an air gap of 0.9 µm. Analyze the reflections of light of wavelength 600 nm and conclude whether it will be brightly reflected or not. 0.9 um gap ** 39. The air gap in the previous problem is now filled with a mineral oil whose index of refraction is n = 1.5. Analyze the reflections of light of wavelength 600 nm and conclude if it will be brightly reflected or not.Information is stored on an audio compact disc, CD-ROM, or DVD disc in a series of pits on the disc. These pits are scanned by a laser beam. An important limitation on the amount of information that can be stored on such a disc is the width of the laser beam. Explain why this should be, and explain how using a shorter-wavelength laser allows more information to be stored on a disc of the same size.