by Mark Hughes In 1961, Yuri Gagarin became the first person to venture beyond Earth's atmosphere. Since his journey, about 450 people—astronauts, civilians, and "space tourists…
(Encyclopedia) Beit, AlfredBeit, Alfredbīt [key], 1853–1906, South African financier, b. Hamburg. He went to South Africa in 1875, grew rich from the development of diamond mines, and was a colleague…
(Encyclopedia) hardness, property of matter commonly described as the resistance of a substance to being scratched by another substance. The degree of hardness is relative, different substances being…
actressBorn: 8/17/1893Birthplace: Brooklyn, New York Stage and film actress who was the queen of double entendre and exaggerated, humorous sexiness. Her films include She Done Him Wrong (1933) and…
Minerals are solid, inorganic (not living) substances that are found in and on earth. Most are chemical compounds, which means they are made up of two or more elements. For example, the mineral…
Born: 1864
Birthplace: near Diamond Grove, Mo.
Cosmetic and process of producing same; paint and stain and process of producing the same—When Carver's method of crop rotation…
Born: 1856Birthplace: Washington, Penn. Carborundum—Carborundum is the hardest surface made by humans and is second only to the diamond's hardness. Acheson created carborundum (silicon-carbide) by…
