(a) A possible means for making an airplane invisible to radar is to coat the plane...
A possible means for making an airpolane invisible to radar is to coat the plan with an anti-reflective polymer. The radar waves have a wavelength of 4.23 cm and the index of refraction of the polymer is 1.64. What is the minimum thickness required to make the coating? Assume that the plane is made of metal, so electromagnetic waves will have a phase change upon relfections from the plane's surface. Answer in units of cm
A jeweler wishes to show off the intrinsic brilliance of their prize diamond by giving it an antireflective coating for light of wavelength 565 nm in air. What is the minimum thickness the jeweler needs for a coating material with an index of refraction of 1.45? The index of refraction of diamond is 2.41.
a) Young's double-slit experiment is performed with 595-nm light and a distance of 2.00 m between the slits and the screen. The tenth interference minimum is observed 7.40 mm from the central maximum. Determine the spacing of the slits (in mm). Answer: 1.5277 mm (b) What If? What are the smallest and largest wavelengths of visible light that will also produce interference minima at this location? (Give your answers, in nm, to at least three significant figures. Assume the visible...
Sometimes a nonreflective coating is applied to a lens, such as a camera lens. The coating has an index of refraction between the index of air and the index of the lens. The coating cancels the reflections of one particular wavelength of the incident light. Usually, it cancels green-yellow light (λ 546.0 nm) in the middle of the visible spectrum. (a) Assuming the light is incident perpendicular to the lens surface, what is the minimum thickness of the coating in...
My question is related to Optics- Interference from thin films: If we wish to coat flat glass [ index of refraction (n)=1.50] with a transparent material (n =1.25) so that reflection of light at wavelength 600 nm is eliminated by interference.What minimum thickness can the coating have to do this? I know that the waves will experience a phase change of pi rad or (0.5 wavelength) since the first medium has a small index of refraction. How does this connect...
2. -/5 points KatzPSE1 36.P.015 My Notes Ask Your Teacher Sometimes a nonreflective coating is applied to a lens, such as a camera lens. The coating has an index of refraction between the index of air and the index of the lens. The coating cancels the reflections of one particular wavelength of the incident light. Usually, it cancels green-yellow light (à - 552.0 nm) in the middle of the visible spectrum. (a) Assuming the light is incident perpendicular to the...
When viewing a piece of art that is behind glass, one often is affected by the light that is reflected off the front of the glass (glare), which can make it difficult to see the art clearly. One solution is to coat the out surface of glass with a film to cancel part of the glare. a.) if the glass has a refraction index of 1.62 and you use TiO_2, which has an index of refraction of 2.62, as the...
Sometimes a nonreflective coating is applied to a lens, such as a camera lens. The coating has an index of refraction between the index of air and the index of the lens. The coating cancels the reflections of one particular wavelength of the incident light. Usually, it cancels green-yellow light (λ = 543.0 nm) in the middle of the visible spectrum. (a) Assuming the light is incident perpendicular to the lens surface, what is the minimum thickness of the coating...
The rhinestones in costume jewelry are glass with index of refraction 1.50. To make them more reflective, they are often coated with a layer of silicon monoxide of index of refraction 2.00. What is the minimum coating thickness needed to ensure that light of wavelength 539 nm and of perpendicular incidence will be reflected from the two surfaces of the coating with fully constructive interference?
the formula for reflected light form thin film layer 2 m m 0,1,2..where t is the film thickness the wavelength of the light and n is the index of refraction, can be used to determine a) constructive interference only b) b) destructive interference c) c) both destructive and constructive interference. The following picture shows wave fronts of a wave propagating in the transparent materials A and B. What can you tell about the speeds V, Vs of the wave and...