The horizontal fraction bar was introduced by the Arabs.
Did you know?
Oliver Wendell Holmes is credited with introducing the words "anesthesia" and "anesthetic" into the English language in 1846.
Did you know?
Malaria was not eliminated in the United States until 1951. The term eliminated means that no new cases arise in a country for 3 years.
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There are more bacteria in your mouth than there are people in the world.
Did you know?
Stroke kills people from all ethnic backgrounds, but the people at highest risk for fatal strokes are: black men, black women, Asian men, white men, and white women.
Testing the reducing atmosphere hypothesis for the origin of life - the Miller and Urey experiment.
Introduction to Organic Compounds
"Dark Matter"
U.S. Life Expectancy by Year of Birth
Chlamydomonas Life Cycle
Pulse–chase labeling evidence of bidirectional DNA replication in mammalian chromosomes