John Napier

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John Napier
Image:John Napier (Painting).jpeg
John Napier (1550-1617)
Born1550
Merchiston Tower, Edinburgh, Scotland
Died4 April, 1617
Edinburgh, Scotland
ResidenceImage:Flag of Scotland.svg Scotland
NationalityImage:Flag of Scotland.svg Scottish
FieldMathematician
Alma materSt Andrews University
Known forLogarithms
Napier's bones
Decimal notation
InfluencesHenry Briggs
Religious stanceProtestant


For other people with the same name, see John Napier (disambiguation).

John Napier of Merchistoun (1550 – 4 April 1617) - also signed as Neper, Nepair - nicknamed Marvellous Merchiston, was a Scottish mathematician, physicist, astronomer/astrologer and 8th Laird of Merchistoun, son of Sir Archibald Napier of Merchiston. He is most remembered as the inventor of logarithms and Napier's bones, and for popularizing the use of the decimal point. Napier's birth place, Merchiston Tower, Edinburgh, Scotland, is now part of Napier University. After dying of gout, Napier was buried in St Cuthbert's Church, Edinburgh.

Contents

[edit] Advances in mathematics

Napier is relatively little-known outside mathematical and engineering circles, where he made what is undoubtedly a key advance in the use of mathematics. Logarithms made calculations by hand much easier and quicker, and thereby opened the way to many later scientific advances. His work, Mirifici Logarithmorum Canonis Descriptio, contained thirty-seven pages of explanatory matter and ninety pages of tables, which facilitated the furtherment of astronomy, dynamics, physics, and astrology. He also invented Napier's bones, a multiplication tool using a set of numbered rods.

[edit] Theology

Napier used some of his mathematical talents for theology, as he used the Book of Revelation to predict the Apocalypse, in A Plaine Discovery of the Whole Revelation of St. John, which he regarded as his most important work. Napier believed that the end of the world would occur in 1688 or 1700. He is also sometimes claimed to have been a necromancer; however, it was common for scientifically talented people of the period to be accused of such things without basis.

[edit] Astrology and the Occult

Image:John Napier.JPG
John Napier

In addition to his mathematical and religious interests, Napier was commonly believed to be a magician, and is thought to have dabbled in alchemy and necromancy. It was said that he would travel about with a black spider in a small box, and that his black rooster was his familiar spirit. [1] [2]

Napier was able to use his black rooster to tell which of his servants had been stealing from his home. He would shut the suspects in a room with the rooster one at a time and told them to stroke it and it would then tell Napier who had done it. In actual fact what would happen is that he would cover the rooster in charcoal and the servants who were innocent would have no problem stroking it but the guilty would pretend he had and when Napier examined their hands, the one with the clean hands was guilty. [3]

Another occasion which may have contributed to his reputation as a sorcerer was one involving a neighbor, whose pigeons were found to be eating Napier's grain. Napier warned his neighbor that he intended to keep any of the pigeons that he found on his property. The next day, it is said, Napier was witnessed scooping up the passive pigeons and putting them in a sack. In fact, he had sown peas soaked in brandy, which the pigeons then ate, making themselves too inebriated to fly. [4]

Also of note is that a contract still exists between John Napier and one Robert Logan of Restalrig to search Fast Castle (by means of magic) for treasure allegedly hidden there, and wherein it is stated that Napier should
"...do his utmost diligence to search and seek out, and by all craft and ingine to find out the same, or make it sure that no such thing has been there."[5]

[edit] Eponyms

An alternative unit to the decibel used in electrical engineering, the neper, is named after John Napier, as is Napier University in Edinburgh.

Neper crater, on the Moon, is also named after him,[1] as was a 1992 asteroid, 7096 Napier.

[edit] List of works

  • (1593) A Plaine Discovery of the Whole Revelation of St. John.
  • (1614) Mirifici logarithmorum canonis descriptio (a translation into English by Edward Wright was published in 1616).
  • (1617) Rhabdologia (published posthumously).
  • (1619) Mirifici logarithmorum canonis constructio (written before the 'Descriptio', but published posthumously by his son Robert)

[edit] See also

[edit] Notes

  1. ^ http://news.scotsman.com/scitech.cfm?id=523542005 Scotsman article about John Napier
  2. ^ http://heritage.scotsman.com/myths.cfm?id=41962005 Scotsman article specifically about Napier's interest in the occult
  3. ^ http://www.johnnapier.com/john_napier_and_the_devil.htm John Napier and the Devil
  4. ^ http://www.twinfield.net/teachers/buret/documents/biographies/Napier.pdf A Biography of John Napier
  5. ^ http://www.siol-nan-gaidheal.com/manuscripts/3/LXXV-3.htm Scans of the original charter and a later typed translation

[edit] References


Persondata
NAME Napier, John
ALTERNATIVE NAMES
SHORT DESCRIPTION Scottish mathematician, physicist, astronomer/astrologer and 8th Laird of Merchistoun
DATE OF BIRTH 1550
PLACE OF BIRTH Merchiston Castle, Edinburgh, Scotland
DATE OF DEATH 4 April 1617
PLACE OF DEATH
br:John Napier

de:John Napier es:John Napier eo:John Napier fr:John Napier ko:존 네이피어 id:John Napier ia:John Napier it:John Napier he:ג'ון נפייר lt:Džonas Neperis hu:John Napier mk:Џон Непер nl:John Napier ja:ジョン・ネイピア no:John Napier pl:John Napier pt:John Napier ro:John Napier ru:Непер, Джон sk:John Napier sl:John Napier sr:Џон Непер fi:John Napier sv:John Napier tr:John Napier uk:Непер Джон zh:約翰·納皮爾

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