(a) For use in a liquid crystal display, you want an electrode that is transparent to all visible light. You decide to use a doped semiconducting oxide with a mobility of 10-2 m2/V-s. What is the maximum conductivity you can expect from your oxide? Assume E = Eo
(b) You look at the sun through goggles that have been coated with a thin layer of highly-conductive metal such as silver. Briefly explain why and in which way the color of light will be altered.