James Gregory

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Gregory, James


Born 1638 in Aberdeen; died 1675 in Edinburgh. Scottish mathematician and astronomer. Member of the Royal Society of London (1668).

Gregory was a professor at the University of St. Andrews (from 1669) and the University of Edinburgh (from 1674). He developed one of the first designs for a reflecting telescope. He worked out a technique for calculating the area of a sector of a circle, hyperbola, and ellipse. This was related to his attempt to prove that circular and logarithmic functions cannot be reduced to algebraic operations. He calculated areas using series. In 1668, Gregory derived the formula for approximate integration, later rediscovered by the English mathematician T. Simpson.


Wileitner, H. Istoriia matematiki ot Dekarta do serediny 19 stoletiia, 2nd ed. Moscow, 1966. (Translated from German.)
References in periodicals archive ?
Survivors include his daughter, Sandra Klein of Petersburg; son, James Gregory (Susan) Williams of Litchfield; grandchildren, Benjamin Colt Fletcher of Springfield and Haley Marie Williams of Litchfield; great-grandson, Thomas James Abner of Petersburg; and many nieces, nephews and cousins.
On target for the Sporting Club were Luke McMahon, Brian Crocker and James Gregory.
Andrew Benjamin James Gregory, 36, from Astoria Close in Thornhill, Cardiff, admitted driving while using a mobile phone, driving while disqualified and without insurance.
US government officials will visit Riyadh's King Khalid International Airport "later this week to confirm compliance there as well," spokesman James Gregory said.
This clarifying update will strengthen global aviation security and is a testament to our shared commitment to raising the baseline," said James Gregory, a spokesman for the U.
On a different scale, three miles north of Aberdeen city centre the James Gregory Centre is a serviced office centre in Aberdeen Innovation Park providing two to eight-person office suites.
Biographical drama, starring Rod Steiger, Martin Balsam, Fay Spain and James Gregory.
Before this, the far less well-known Scots astronomer and mathematician James Gregory designed a reflecting telescope which is now known as a Gregorian telescope.
But while they have, indeed, been around for quite a while, the band - founder members Preston, James Gregory (bass) and Charlie Stanley (drums), plus former Spectrals guitarist Louis Jones - are not exactly in their dotage.
JAMES GREGORY "GREG" JOLISSAINT, MD, MS, FACPE, has joined the Maryland Veterans Administration Healthcare System as director of quality, safety and improvement.
Warbreck and Waterloo Dock needed extra time and penalties to decide the outcome of their game after Shaun Clare had given Warbreck the lead only for James Gregory to smash a last minute equaliser for the Dock.
50am James Gregory, a prison guard in apartheid-era South Africa and lifelong believer in his society's racist ideology, is assigned to Robben Island prison to watch over its most famous inmate - Nelson Mandela.