intensity (arbitrary unit) Assuming the reflection spectrum of an object consisting of two wavelengths as shown in Fig. 2, the reflectance of the object at the wavelength of 450 nm is 60%, and that at 580 nm is 70%. Using the color matching function (CMF) values, listed in Table I, calculate the CIE coordinates of the reflected spectrum from the object. 2 400 440 480 520 560 600 Wavelength (nm)
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- What is the smallest separation between two slits that will produce a second-order maximum for 720-nm red light?(a) What is the smallest separation between two slits that will produce a second-order maximum for any visible light? (b) For all visible light?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?
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