Abstract :
Auto headlamps and outdoor, floodlight reflectors that are said to be as efficient as freshly silvered glass mirrors have been developed by using a coating of polished chromium. This metal, unlike aluminum, silver or nickel, will not tarnish or corrode although subjected to constant exposure, and is so hard that gritty waste may be used in cleaning it without danger of scratching. It need not be coated with lacquer to protect it from the atmosphere; hence the full benefit of its brightness is obtained.
