Concept explainers
(a)
Will the visible light be transmitted or absorbed by
(a)
Answer to Problem 41AAP
The visible light will be transmitted by
Explanation of Solution
Write the equation to calculate the wavelength of the radiation
Here, energy band gap of the material is
Conclusion:
When the critical wavelength of a material is greater than the light wavelength of
The values of Planck constant and speed of light are
Refer Table 14.6, "Electrical properties of intrinsic semiconducting compounds at room temperature", select the energy band gap of the
Substitute
Thus, the visible light will be transmitted by
(b)
Will the visible light be transmitted or absorbed by
(b)
Answer to Problem 41AAP
The visible light will be transmitted by
Explanation of Solution
Conclusion:
Refer Table 14.6, "Electrical properties of intrinsic semiconducting compounds at room temperature", select the energy band gap of the
Substitute
Thus, the visible light will be transmitted by
(c)
Will the visible light be transmitted or absorbed by diamond material.
(c)
Answer to Problem 41AAP
The visible light will be transmitted by diamond material.
Explanation of Solution
Conclusion:
Substitute
Thus, the visible light will be transmitted by diamond material.
Want to see more full solutions like this?
Chapter 15 Solutions
Foundations of Materials Science and Engineering
- Calculate the energy of a photon of light with a frequency of 4.35E 14 Hz. (Planck's constant: h = 6.63 E-34 Js)arrow_forward(a) In an X-ray tube, do you expect the wavelength of the characteristic X-rays to increase, decrease, or stay thesame if the energy of the electrons striking the target is increased?(b) Choose the best explanation from among the following:I. Increasing the energy of the incoming electrons will increasethe wavelength of the emitted X-rays.arrow_forwardDetermine the expected diffraction angle (in degrees) for the first-order reflection from the (310) set of planes for BCC chromium(Cr) when monochromatic radiation of wavelength 0.0711 nm is used. (Rcr= 0.1249nm)arrow_forward
- A cell culture is covered with a 1 cm sheet of Lucite (density=1.19 g/cm^3). What thickness of lead (in cm) is needed on top of the Lucite to prevent 10MeV beta rays from reaching the culture? Use the approximate empirical formulas relating range Rin g/cm^2 to electron kinetic energy T in MeV:arrow_forwardA laser contains a Ti:sapphire rod of length 5mm and composed of a material with n=1.76 and n2=1x10-19m2 w-1 The FWHM (intensity) beam diameter is 100µm, the average intra-cavity laser power is 8W, the pulse duration is 53fs and the pulse repetition frequency is 64MHZ. By considering the optical Kerr effect, by what distance (in nm) does the center of the beam lag behind the FWHM points after propagating the length of the rod?arrow_forwardWhat is Bragg's law? How is it used in X-ray diffraction?arrow_forward
- Q1 In a parallel plate diode, the anode is at 230 V with respect to the cathode which is 4.5 mm away from it. An electron is emitted from cathode with an initial velocity of 3 x 106 m/s towards the anode. Calculate; (i) the arrival velocity of the electron at anode. (ii) time of transit. (iii) the velocity and distance travelled by the electron after 6 x 10-10 s.arrow_forwardCalculate the energy of a photon of electromagnetic radiation at the wavelengths: 0.052 nm (wavelength contained in medical X-rays)arrow_forwardConsider the Bragg equation in the x-ray diffraction. If the value of the wavelength is doubled, which of the following is NOT truearrow_forward
- a )Calculate the interplanar spacing d(111)of the (111) planes in nickel with a = 0.3524 nm. What family of planes in nickel has an interplanar spacing of 0.1246 nm? b)Explain the difference between (200) planes and (100) planearrow_forwardThe metal iridium has an FCC crystal structure. If the angle of diffraction for the (220) set of planes occurs at 69.22° (first-order reflection) when monochromatic x-radiation having a wavelength of 0.1542 nm is used, compute (a) the interplanar spacing for this set of planes, and (b) the atomic radius for an iridium atom.arrow_forward(a) Calculate the mass and linear absorption coefficients of air for Cr Ka radiation.Assume that air contains 80 percent nitrogen and 20 percent oxygen by weight and has adensity of1.29 x g/cm3. (b) Plot the transmission factor of air for Cr Ka radiationand a path length of 0 to 20 cm.Please use any table or data from the Elements of X-ray Diffraction by Cullityarrow_forward
- Elements Of ElectromagneticsMechanical EngineeringISBN:9780190698614Author:Sadiku, Matthew N. O.Publisher:Oxford University PressMechanics of Materials (10th Edition)Mechanical EngineeringISBN:9780134319650Author:Russell C. HibbelerPublisher:PEARSONThermodynamics: An Engineering ApproachMechanical EngineeringISBN:9781259822674Author:Yunus A. Cengel Dr., Michael A. BolesPublisher:McGraw-Hill Education
- Control Systems EngineeringMechanical EngineeringISBN:9781118170519Author:Norman S. NisePublisher:WILEYMechanics of Materials (MindTap Course List)Mechanical EngineeringISBN:9781337093347Author:Barry J. Goodno, James M. GerePublisher:Cengage LearningEngineering Mechanics: StaticsMechanical EngineeringISBN:9781118807330Author:James L. Meriam, L. G. Kraige, J. N. BoltonPublisher:WILEY