How much does a 1 carat diamond weigh?
A 1 carat diamond weighs 200 milligrams, or 3.086 grains troy.
The measurement originally represented the weight of a seed of the carob tree.
The first such house of prostitution on record may have been Ka-Kum. It was located in the city of Erech (or Uruk) in Sumer and dating back to about 3000 B.C. The first brothels in Europe were located in Athens about 600 B.C. These non-profit operations sanctioned by the leader Solon charged men 1 cent…
The first blood bank was not opened until 1940 in New York City. It was designed and operated by American surgeon Richard Charles Drew (1904-1950). He could not contribute blood to the bank because he was black.
The first skyscraper was the 10-story Home Insurance Company Building in Chicago It was designed by William Le Baron Jenney and completed in 1885. The first tall building to be supported by an internal frame of iron and steel rather than by thick masonry walls, it was demolished in 1931.
The first person to die in the gas chamber was Gee Jon. He was convicted of assassinating a member of a rival Chinese tong and died in a gas chamber in Nevada State Prison in Carson City on February 8, 1924. The idea of the gas chamber was introduced by Major D. A. Turner of…
The first news event to be televised was the nomination of Alfred E. Smith for the presidency in Albany, New York, on August 22, 1928. The program was transmitted by Schenectady’s WGY. The first regular news reports were 15-minute daily programs transmitted over New York’s WCBS and WNBT, beginning on July 1, 1941. The First…
To assess voters’ preferences in the 1824 presidential election, citizens were asked whom they preferred. This was the first public opinion poll. The results, published in the Harrisburg Pennsylvanian on July 24, 1824, gave Andrew Jackson a commanding lead over John Quincy Adams and all others. However, Adams won the election.