Vacuum cleaner
The vacuum cleaner evolved from the carpet sweeper via manual vacuum cleaners. The first manual models, using bellows, were developed in the 1860s, and the first motorized designs appeared at the turn of the 20th century, with the first decade being the boom decade.
Victor Schumann
Victor Schumann (December 21, 1841 – September 1, 1913) was a physicist and spectroscopist who in 1893 discovered the vacuum ultraviolet.