Reflection by thin layers. In the figure, light is incident perpendicularly on a thin layer of material 2 that lies between (thicker) materials 1 and 3. (The rays are tilted only for clarity.) The waves of rays r, and rz interfere, and here we consider the type of interference to be either maximum (max) or minimum (min). The table below provides the indexes of refraction ng. n2, and na, the type of interference, and the thinlayer thickness Lin nanometers. Give the wavelength that is in the visible range. n2 n3 Туре L 1.51 1.35 1.49 min 391 Number i Units

Reflection by thin layers. In the figure, light is incident perpendicularly on a thin layer of material 2 that lies between (thicker) materials 1 and 3. (The rays are tilted only for clarity.) The waves of rays r, and rz interfere, and here we consider the type of interference to be either maximum (max) or minimum (min). The table below provides the indexes of refraction ng. n2, and na, the type of interference, and the thinlayer thickness Lin nanometers. Give the wavelength that is in the visible range. n2 n3 Туре L 1.51 1.35 1.49 min 391 Number i Units