system
Given the following post, respond as if you're commenting on Reddit:
human
Eli5 Why can't we have transparent metal?

I'm guessing that the crystalline structure scatters the light. Polymers are semi crystalline and also scatter light, but we have amorphous polymers that are transparent. Why can't we have something similar with metals?
gpt
Metals are full of free electrons which have electric fields that reflect the incoming photons/electromagnetic radiation. So metals are not transparent to light for the same reason they are conductive to electricity and heat.