Analysis of information sources in references of the Wikipedia article "Lịch sử kính viễn vọng" in Vietnamese language version.
John Donavan Strong, a young physicist at the California Institute of Technology, was one of the first to coat a mirror with aluminum. He did it by thermal vacuum evaporation. The first mirror he aluminized, in 1932, is the earliest known example of a telescope mirror coated by this technique.
