Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
(A) Picture of the crucibles taken out of the furnace and left to crystallize on a sheet of stainless steel. The left crucible shows a sample of pure salt (white) (60/40 ratio–NaNO3/KNO3) whilst the next three samples (left to right) contain increasing concentrations of copper oxide calculated to be 0.32, 0.98 and 1.65 wt. %; (B) Top view of 0.98 wt. % CuO samples; (C) View of the underside of 0.98 wt. % CuO solid salt mixture.
