Wikipedia contributors. (2023, December 27). Plasmon. In Wikipedia, The Free Encyclopedia. Retrieved March 11, 2024, from https://en.wikipedia.org/w/index.php?title=Plasmon&oldid=1192024201
And if thine eye offend thee, pluck it out, and cast it from thee: it is better for thee to enter into life with one eye, rather than having two eyes to be cast into hell fire. Matthew 18:9 KJV
Some metals, such as copper and gold, have electronic interband transitions in the visible range, whereby specific light energies (colors) are absorbed, yielding their distinct color.