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Did you know?
During the twentieth century, a variant of the metric system was used in Russia and France in which the base unit of mass was the tonne. Instead of kilograms, this system used millitonnes (mt).
Did you know?
Ether was used widely for surgeries but became less popular because of its flammability and its tendency to cause vomiting. In England, it was quickly replaced by chloroform, but this agent caused many deaths and lost popularity.
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Illicit drug use costs the United States approximately $181 billion every year.
Did you know?
The average office desk has 400 times more bacteria on it than a toilet.
Did you know?
The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.