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Hace 17 horas · Gary, Indiana, was founded in 1906 by the U.S. Steel as the home for its new plant, Gary Works.The city was named after lawyer Elbert Henry Gary, who was the founding chairman of the United States Steel Corporation.. Gary was the site of civil unrest in the steel strike of 1919.On October 4, 1919, a riot broke out on Broadway, the main north-south street through downtown Gary, between steel ...
Hace 17 horas · Ultraviolet (UV) light is electromagnetic radiation of wavelengths of 10–400 nanometers, shorter than that of visible light, but longer than X-rays.UV radiation is present in sunlight, and constitutes about 10% of the total electromagnetic radiation output from the Sun.It is also produced by electric arcs, Cherenkov radiation, and specialized lights, such as mercury-vapor lamps, tanning ...
