The lead architect on the design team of a new skyscraper decides that the outer surface of the building's windows need to be coated with a reflective layer in order to lower airconditioning costs. MgF2 is chosen for the reflective layer, which has a refractive index n=1 1.38. Assume that the refractive index of the window glass is 1.5 and that the reflective coating should work optimally at the peak of the sunlight spectrum, 500 mm. You may want to review (Page). For related problem-solving tips and strategies, you may want to view a Video Tutor Solution of grease as a thin film. ▾ Part A What is the minimum thickness of film that is needed? Express your answer in nanometers to three significant figures. t= Submit Part B Parts for Part Ndo for Part redo foart. A reor Part A keyboard shortcuts for Part A help for Part A Suppose the layer needs to be thicker than 200 mm in order to hold up to the weather. What other thicknesses would also work? Give only the three thinnest ones. Enter your answers in nanometers, separated with commas, to three significant figures. for Part B for Past Edo for Part redo folent 8 reor Part B keyboard shortcuts for Part 8 help for Part 8 1₂. ts. to= Submit Request Answer Request Answer nim

The lead architect on the design team of a new skyscraper decides that the outer surface of the building's windows need to be coated with a reflective layer in order to lower airconditioning costs. MgF2 is chosen for the reflective layer, which has a refractive index n=1 1.38. Assume that the refractive index of the window glass is 1.5 and that the reflective coating should work optimally at the peak of the sunlight spectrum, 500 mm. You may want to review (Page). For related problem-solving tips and strategies, you may want to view a Video Tutor Solution of grease as a thin film. ▾ Part A What is the minimum thickness of film that is needed? Express your answer in nanometers to three significant figures. t= Submit Part B Parts for Part Ndo for Part redo foart. A reor Part A keyboard shortcuts for Part A help for Part A Suppose the layer needs to be thicker than 200 mm in order to hold up to the weather. What other thicknesses would also work? Give only the three thinnest ones. Enter your answers in nanometers, separated with commas, to three significant figures. for Part B for Past Edo for Part redo folent 8 reor Part B keyboard shortcuts for Part 8 help for Part 8 1₂. ts. to= Submit Request Answer Request Answer nim

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter36: Applications Of The Wave Model

Section: Chapter Questions

Problem 15PQ

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To save money on making military aircraft invisible to radar, an inventor decides to coat them with a nonreflective material having an index of refraction of 1.20, which is between that of air and the surface of the plane. This, he reasons, should be much cheaper than designing Stealth bombers. (a) What thickness should the coating be to inhibit the reflection of 4.00-cm wavelength radar? (b) What is unreasonable about this result? (c) Which assumptions are unreasonable or inconsistent?
Unreasonable Results To save money on making military aircraft invisible to radar, an inventor decides to coat them with a non-reflective material having an index of refraction of 1.20, which is between that of air and the surface of the plane. This, he reasons, should be much cheaper than designing Stealth bombers. (a) What thickness should the coating be to inhibit the reflection of 4.00-cm wavelength radar? (b) What is unreasonable about this result? (c) Which assumptions are unreasonable or inconsistent?
Q3/A/We wish to coat a glass surface with an appropriate dielectric layer to provide total transmission from air to the glass at a free-space wavelength of 570 nm. The glass has refractive index n, = 1.45. Determine the required index for the coating and its minimum thickness.
Q3/A/We wish to coat a glass surface with an appropriate dielectric layer to provide total transmission from air to the glass at a free-space wavelength of 570 nm. The glass has refractive index n3 = 1.45 . Determine the required index for the coating and its minimum thickness.
A new type of transparent plastic has been developed. When light travels through it, it only travels at 2x10^7 m/s. What is the refractive index (n) of this plastic?
The atmosphere of Jupiter is more than 1000km thick .from the surface of Jupiter would you expect to see a white sun?
An optical coating with an index of refraction of 1.23 is applied to glass with an index of refraction of 1.50. If the thickness of this coating is 184nm, what wavelength(s) of visible light in air are most strongly reflected from this surface? Visible wavelengths range from 350nm to 700nm.
A beam of green light enters glass from air, at an angle of incidence = 24 degrees. The frequency of green light = 559 x 1012 Hz. Refractive index of glass = 1.56. Speed of light in air = 3 x 10° m/s. What will be its wavelength inside the glass? Write your answer in terms of nanometers.
Q: A material has an index-of-refraction that decreases with increasing frequency. EM waves at f = 1000 Hz and 1500 Hz are incident from air on the material at same incidence angle. Which frequency, if either, bends more from the path of its incident ray? Q: A light ray with 10 W/m2 intensity moving in the x-direction is polarized at 45° to both the y- and z-axes. It passes through a polarizer whose transmission axis is aligned with the y-axis. What is the intensity of the transmitted light?
To reduce the loss of light when reflected from the glass surface, the latter is covered with a thin layer of a substance, the refractive index of which is n '= sqrt (n), where n is the refractive index of the glass. At what minimum thickness d (min) of this layer will the reflectivity of glass in the normal direction be minimal for light with a wavelength λ?
A colloid consists of particles of one type of substance dispersed in another substance. Suspensions of electrically charged microspheres (microscopic spheres, such as polystyrene) in a liquid such as water can form a colloidal crystal when the microspheres arrange themselves in a regular repeating pattern under the influence of the electrostatic force. Colloidal crystals can selectively manipulate different wavelengths of visible light. Just as we can study crystalline solids by using Bragg reflection of x rays, we can study colloidal crystals through Bragg scattering of visible light from the regular arrangement of charged microspheres. Because the light is traveling through a liquid when it experiences the path differences that lead to constructive interference, it is the wavelength in the liquid that determines the angles at which Bragg reflections are seen. In one experiment, laser light with a wavelength in vacuum of 650 nm is passed through a sample of charged polystyrene…
A colloid consists of particles of one type of substance dispersed in another substance. Suspensions of electrically charged microspheres (microscopic spheres, such as polystyrene) in a liquid such as water can form a colloidal crystal when the microspheres arrange themselves in a regular repeating pattern under the influence of the electrostatic force. Colloidal crystals can selectively manipulate different wavelengths of visible light. Just as we can study crystalline solids by using Bragg reflection of x rays, we can study colloidal crystals through Bragg scattering of visible light from the regular arrangement of charged microspheres. Because the light is traveling through a liquid when it experiences the path differences that lead to constructive interference, it is the wavelength in the liquid that determines the angles at which Bragg reflections are seen. In one experiment, laser light with a wavelength in vacuum of 650 nm is passed through a sample of charged polystyrene…