John napier mathematician
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The pH scale that measures the acidity of materials is also logarithmic. Many quantities, such as sound loudness, Earthquake strength, and pH, are measured using logarithmic scales. Craig with Napier and Longomontanus. It is to be noticed also that the invention was not the result of any happy accident. Robert Napiers says that these results would have been reduced to order and demonstrated consecutively but for his fathers death.

For example, he worked through a problem involving the computation of mean proportionals, sometimes known as the geometric mean. . Early Life John Napier was born on February 1, 1550, in Merchiston Tower, Edinburgh, Scotland. Decimal fractions had already been introduced by the Flemish mathematician Simon Stevin in 1586, but his notation was unwieldy. Napier sent a copy of his 1614 work to Henry Briggs, professor at Gresham College. He was the 8th Laird of Merchiston.

In addition, Napier recognized the potential of the recent developments in mathematics, particularly those of prosthaphaeresis, decimal fractions, and symbolic index arithmetic, to tackle the issue of reducing computation. When Napier was alive, most people could add and subtract small numbers, but very few people could multiply, and long division was considered a university subject! John Napier is also remembered for 'Napier's Bones', a calculating device that allowed the user to carry out multiplication and division. In particular, the Scottish mathematician John Napier was famous for his devices to assist with computation. He was put on the Commission of the Peace for Stirlingshire and, with others, managed the estates of his nephew, the second Lord Napier, during the Commonwealth. She was a twin of the above Agnes, but nothing else is known about her. It was in 1571 that Napier himself began to make arrangements for his own marriage but it was at nearly two years before that took place. Mr Briggs appoints a certain day when to meet at Edinburgh: but failing thereof, the Lord Napier was doubtful he would not come.

The latter probably died within days of being born, or was stillborn, hence it not having a forename. He also made important contributions to spherical trigonometry, particularly by reducing the number of equations used to express trigonometrical relationships from 10 to 2 general statements. Calculators are easy to use and widely available, and they make it simple to perform even the most complex calculations. This, with some things which to the vulgar appear rather odd, fixed on him the character of a warlock. In the criminal court of Scotland, the earl of Argyll, hereditary justice-general of the kingdom, sometimes presided in person, but more frequently he delegated his functions; and it appears that in 1561 Archibald Napier was appointed one of the justice-deputes. The first particle he set in uniform motion on the line of infinite length so that it covered equal distances in equal times.

I cannot recall the last time something like that happened in politics or religion. The reason for publishing the work is given by Napier in the dedication, where he says that so many of his friends, to whom he had shown the numbering rods, were so pleased with them that they were already becoming widely used, even beginning to be used in foreign countries. Napier's numbering rods were made of ivory, so that they looked like bones which explains why they are now known as Napier's bones. He died on January 26, 1631, aged about seventy-four years, so that at the time of the publication of the canon Mirificus he was about fifty-seven years of age. After Napiers death his manuscripts and notes came into the possession, not of his eldest son Archibald, but of his second son by his second marriage, Robert, who edited the Constructio; and Colonel Milliken Napier, Roberts lineal male representative, was still in the possession of many of these private papers at the close of the last century. The eldest son of Alexander, sixth Napier of Merchiston, was Archibald, the father of John Napier ; his second son, named Alexander,settled at Exeter, and married an English lady by whom he had two sons, the eldest of whom, Robert, was the merchant, mentioned in the note near the beginning of this article as having been created a baronet.

On one occasion when Colonel Napier was called from home on foreign service, these papers, together with a portrait of John Napier and a Bible with his autograph, were deposited for safety in a room of the house at Milliken, in Renfrewshire. The Scottish mathematician John Napier 1550-1617 discovered logarithms and effectively introduced the modern notation of decimal fractions. Memorial to John Napier in St Cuthbert's Church In addition to his mathematical and religious interests, Napier was often perceived as a magician, and is thought to have dabbled in alchemy and necromancy. John and Mary had two children, who probably died young. The Patrick who was in Virginia in the 1650s was descended from the. John Napier was actively involved in politics till the end of his life and died in 1617 at the age of 67.

Which hint Neper taking, he desired him at his return to call upon him again. He also was provost of Edinburgh at various times, and it is a remarkable instance of the esteem in which the lairds of Merchiston were held that three of them in immediate lineal succession repeatedly filled so important an office during perhaps the most memorable period in the history of the city. Napier and the Occult Apart from his mathematical and religious interests, John was often seen as a magician. John Napier, or Neper, the son of Sir Archibald Napier, was born at Merchiston Castle near Edinburgh. Much of Napier's work on logarithms seems to have been done while he was living at Gartness.

Now John Craig was physician to the king, and in 1590 James Vi. As there could have been no reason for omitting it after it had once appeared, we may assume that the copies which do not have it are those which were first issued. In the early part of this article Thomas Craig was mentioned as one of the colleagues of Sir Archibald Napier, John Napiers father, in the office of justice-depute. Elizabeth died in 1579, and Napier then married Agnes Chisholm, with whom he had ten more children. Napier presented a mechanical means of simplifying calculations in his Rabdologiae published in 1617.