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By an anodizing process, a transparent f...

By an anodizing process, a transparent film of aluminium oxide of thickness `t = 250` nm and index of refraction `n_(2) = 1.80 ` is deposited on a sheet of polished aluminium What is the color of utenslis made from this sheet with observer in white light? Assume normal incidence of the light.

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To determine the color of utensils made from a sheet of polished aluminum with a transparent film of aluminum oxide, we will analyze the phase change upon reflection and calculate the wavelength of light that will be constructively interfered. ### Step-by-Step Solution: 1. **Identify the Given Data:** - Thickness of the aluminum oxide film, \( t = 250 \) nm. - Refractive index of aluminum oxide, \( n_2 = 1.80 \). - Refractive index of air (for simplicity), \( n_1 = 1.00 \). ...
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