The horizontal fraction bar was introduced by the Arabs.
Did you know?
The training of an anesthesiologist typically requires four years of college, 4 years of medical school, 1 year of internship, and 3 years of residency.
Did you know?
More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.
Did you know?
The types of cancer that alpha interferons are used to treat include hairy cell leukemia, melanoma, follicular non-Hodgkin's lymphoma, and AIDS-related Kaposi's sarcoma.
Did you know?
The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
A rich diversity of life lives in and among coral reefs.
awesome diagram on evolution and diversity
Both individuals and organizations do impression management, trying to communicate messages about ...