Isaac Greenwood
Encyclopedia
Professor Isaac Greenwood (11 May 1702 Boston, Massachusetts – 22 October 1745 Charleston, South Carolina
Charleston, South Carolina
Charleston is the second largest city in the U.S. state of South Carolina. It was made the county seat of Charleston County in 1901 when Charleston County was founded. The city's original name was Charles Towne in 1670, and it moved to its present location from a location on the west bank of the...

 ) was the first Hollisian Professor of Mathematics and Natural Philosophy
Hollis Chair of Mathematics and Natural Philosophy
The Hollis Chair of Mathematics and Natural Philosophy is an endowed professorship established at Harvard College in 1727 by Thomas Hollis.The incumbents have been:* Isaac Greenwood * John Winthrop * Samuel Williams...

 at Harvard College
Harvard College
Harvard College, in Cambridge, Massachusetts, is one of two schools within Harvard University granting undergraduate degrees...

.

He graduated at Harvard in 1721, and was instrumental in the smallpox inoculation controversy of that year, speaking out in favour of inoculation. He travelled to London and met with Thomas Hollis
Thomas Hollis
Thomas Hollis was an English political philosopher and author.-Early life:Hollis was educated at Adams Grammar School until the age 10, and then in St. Albans until 15, before learning French, Dutch and accountancy in Amsterdam. After the death of his father in 1735, his guardian was a John...

, who wished to endow a Chair at Harvard College for him. Hollis later fell out with Greenwood, over his lack of financial prudence. However, back in Boston, Greenwood was eventually appointed to the new Hollis Chair in 1727.

During his tenure, he wrote anonymously the first natively-published American book on mathematics – the Greenwood Book, published in 1729. This book made the first published statement of the short scale
Long and short scales
The long and short scales are two of several different large-number naming systems used throughout the world for integer powers of ten. Many countries, including most in continental Europe, use the long scale whereas most English-speaking countries use the short scale...

 value for billion in the United States, which eventually became the value used in most English-speaking countries.

He was removed from the Chair for intemperance (drunkenness) in 1737.

Unable to support his family, he joined the Royal Navy
Royal Navy
The Royal Navy is the naval warfare service branch of the British Armed Forces. Founded in the 16th century, it is the oldest service branch and is known as the Senior Service...

 as a chaplain – HMS Rose in 1742, and later HMS Aldborough in 1744. He was released from service in Charleston, South Carolina, on 22 May 1745.

He drank himself to death a few months later on 22 October 1745.

Family

He married Sara Shrimpton Clarke, daughter of Dr John Clarke, on 31 July 1729, and had five children, of whom the eldest, Isaac, became a noted dentist.
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