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James Glenie  
  
99   09:14 صباحاً   date: 7-7-2016
Author : James Glenie
Book or Source : Dictionary of National Biography
Page and Part : ...


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Date: 7-7-2016 100
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Born: October 1750 in Leslie, Fife, Scotland
Died: 23 November 1817 in Chelsea, London, England

 

James Glenie's mother was Margaret Smith and his father was John Glenie, who was an officer in the army. James attended the local parish school before matriculating at the University of St Andrews where he studied the standard syllabus taken by all students which included classics, mathematics and science. However he was mainly interested in divinity since at this stage he was intending to enter the church. However he soon became fascinated by mathematics and he was briefly an assistant in mathematics at St Andrews. Eventually, however, he decided to follow his father by making a career for himself in the army.

Glenie then qualified as an engineer at the Royal Military Academy, Woolwich. He was an artillery officer when his regiment was sent out to North America in 1775 at the start of the American War of Independence. After reaching the rank of second lieutenant in the artillery in November 1776 he later transferred to the engineers, becoming second lieutenant in February 1779. During his time in North America with the army Glenie worked on mathematics. In fact, even before being sent to North America, he had discovered what he called the antecedental calculus in 1774. The was an attempt to base Newton's fluxional calculus on the binomial theorem rather than on the concept of motion. He published a number of papers on this and other topics; The division of right lines, surfaces and solids being published in the Philosophical Transactions of the Royal Society in 1776 while The general mathematical laws which regulate and extend proportion universally was published in the same journal in the following year. In 1778 the Royal Society published Glenie's paper on the antecedental calculus. In addition to these papers he had also published a book on gunnery entitled The History of Gunnery with a New Method of Deriving the Theory of Projectiles in 1776. For his achievements in mathematics and its applications he was elected a fellow of the Royal Society on 18 March 1779 while he was still based with the army in Quebec.

In 1780 Glenie returned to England and at this time he married Mary Anne Locke from Plymouth. Three years later he became involved in a serious dispute within the Royal Society which is described in detail in [3] but which we now sketch. In 1779 Hutton had became foreign secretary of the Royal Society but was forced to resign in 1783 by Sir Joseph Banks, the president of the Society. It was an unfortunate affair which led to considerable controversy. Banks claimed that Hutton had failed to carry out his duties efficiently, but many in the Society supported Hutton and felt that it was in fact Banks who had failed to manage the affairs of the Society competently. Hutton was supported by Glenie as well as by Atwood Maseres, Maskelyne, Landen, Hornsby and others. They accusing Banks of using excessive authority and of being "despotic" and Glenie made a strong speech opposing Banks and supporting his fellow mathematicians at a meeting of the Society in February 1784. It was certainly a serious affair with the mathematicians threatening to secede from the Society. In fact there was another element to the argument which reflected the rapid increase in the use of mathematics in physical sciences. Glenie, and the others in the mathematicians' mutiny, strongly supported this.

The "mathematicians' mutiny" in the Royal Society was only one of several disputes that Glenie became involved in. The next involved a dispute with the Duke of Richmond described in [1]:-

The duke of Richmond, appointed master-general of the ordnance in 1783, consulted Glenie about his plans to fortify all naval arsenals and to create lines of defence along the British coast. Glenie's somewhat tactless declaration that these plans were absurd and impracticable was ill received and led to a flurry of pamphleteering on both sides.

In many ways Glenie won the argument since the Duke's plans failed to gain the approval of Parliament in 1786. However Glenie chose to resign his commission in the army as a consequence of this dispute and emigrated with his wife and children to New Brunswick, Canada. Glenie still retained his interest in mathematics and he published his ideas in a book entitled the Antecedental Calculus (1793, 1794). He had other interests in Canada, however, serving as a member of the New Brunswick House of Assembly but failing in a business venture as a contractor for ships' timber. Eventually his political career also failed and in 1805 he returned to England with his family. He then taught at the East India Company Royal Military College at Addiscombe from 1805 to 1810. Glenie, sadly, suffered yet another major set-back [1]:-

He was summoned to testify for the crown at the prosecution of G L Wardle MP, but his evidence provoked severe censure from chief justice Lord Ellenborough, and led to his dismissal from his existing posts.

Yet again Glenie tried to succeed in another venture. He went to Copenhagen in 1812 in an attempt to purchase a large plantation, acting for a member of parliament. Perhaps, as in other ventures, Glenie was rather naive and had not set up the proper legal protections for himself. When Glenie returned he was not recompensed so he put in a claim for compensation which eventually went to arbitration. Even the arbitrators could not agree and Glenie was left financially ruined. He turned again to his mathematics, attempting to make some money by taking pupils but, like so many of Glenie's ventures, this too was not successful. He died in poverty.


 

  1. Biography by W Johnson, in Dictionary of National Biography (Oxford, 2004).

Articles:

  1. James Glenie, Dictionary of National Biography (London, 1917).
  2. J L Heilbron, A mathematicians' mutiny, with morals, in World changes, Cambridge, MA, 1990 (Cambridge, MA, 1993), 81-129.
  3. W Johnson, An introduction to the works of James Glenie, International Journal of Impact Engineering 19 (1997), 515-529.
  4. W Johnson, James Glenie in Canada and 'America' and new aspects of his life and work, International Journal of Impact
  5. Engineering 21 (1998), 203-224.
  6. Leybourn's Mathematical Repository 6 (1819), 75-76.

 




الجبر أحد الفروع الرئيسية في الرياضيات، حيث إن التمكن من الرياضيات يعتمد على الفهم السليم للجبر. ويستخدم المهندسون والعلماء الجبر يومياً، وتعول المشاريع التجارية والصناعية على الجبر لحل الكثير من المعضلات التي تتعرض لها. ونظراً لأهمية الجبر في الحياة العصرية فإنه يدرّس في المدارس والجامعات في جميع أنحاء العالم. ويُعجب الكثير من الدارسين للجبر بقدرته وفائدته الكبيرتين، إذ باستخدام الجبر يمكن للمرء أن يحل كثيرًا من المسائل التي يتعذر حلها باستخدام الحساب فقط.وجاء اسمه من كتاب عالم الرياضيات والفلك والرحالة محمد بن موسى الخورازمي.


يعتبر علم المثلثات Trigonometry علماً عربياً ، فرياضيو العرب فضلوا علم المثلثات عن علم الفلك كأنهما علمين متداخلين ، ونظموه تنظيماً فيه لكثير من الدقة ، وقد كان اليونان يستعملون وتر CORDE ضعف القوسي قياس الزوايا ، فاستعاض رياضيو العرب عن الوتر بالجيب SINUS فأنت هذه الاستعاضة إلى تسهيل كثير من الاعمال الرياضية.

تعتبر المعادلات التفاضلية خير وسيلة لوصف معظم المـسائل الهندسـية والرياضـية والعلمية على حد سواء، إذ يتضح ذلك جليا في وصف عمليات انتقال الحرارة، جريان الموائـع، الحركة الموجية، الدوائر الإلكترونية فضلاً عن استخدامها في مسائل الهياكل الإنشائية والوصف الرياضي للتفاعلات الكيميائية.
ففي في الرياضيات, يطلق اسم المعادلات التفاضلية على المعادلات التي تحوي مشتقات و تفاضلات لبعض الدوال الرياضية و تظهر فيها بشكل متغيرات المعادلة . و يكون الهدف من حل هذه المعادلات هو إيجاد هذه الدوال الرياضية التي تحقق مشتقات هذه المعادلات.