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Did you know?
The horizontal fraction bar was introduced by the Arabs.
Did you know?
Certain chemicals, after ingestion, can be converted by the body into cyanide. Most of these chemicals have been removed from the market, but some old nail polish remover, solvents, and plastics manufacturing solutions can contain these substances.
Did you know?
There are 20 feet of blood vessels in each square inch of human skin.
Did you know?
Excessive alcohol use costs the country approximately $235 billion every year.
Did you know?
In 1835 it was discovered that a disease of silkworms known as muscardine could be transferred from one silkworm to another, and was caused by a fungus.