Why not? It is educational and it tastes good, too. [Science with Screens] has a different kind of crystal in mind: copper crystals. You can see the result in the video below. To grow pure metal ...

Copper’s optical absorption of blue light ... used for LEDs. By tweaking the crystal layers of blue-light-producing wafers and the structure of waveguides, Panasonic researchers are on the ...

Copper sheets and strips go through a carefully controlled pre-oxidization and pre-patination process to immediately provide the same brown oxidized and green or blue patinated surface that would ...