Napier, John

Napier, John 8n Neper [Napier], John 8n Neumann, Johann (John) von 114n Newton, Sir Isaac 34n... 

Napier, John (1550-1617) Scottish mathematician, who is best known for devising logarithms, announced in 1614. His tables. 

Napier John (1550-1617) Scot, math., best known inventor of logarithm, originator of Napier s rules of eircular parts for solution of spherieal triangles and also Napier s bones (antecedent of a logarithmic rule) Nernst Hermann Walther (1864—1941)... 

MSS. Note. The Translator (see the Epistle Dedicatory) was evidently a native of Scotland. His Initials R. N. E. might stand for Robert Napier Esq (or of Edinbrough ) a younger son of Napier of Marchiston. London Printed by John Haviland for Henrie Skelton, and are to be sold at his shop a little within Allgate. 1623."... 

Small, J. Sketches of later Scottish alchemists John Napier of Merchiston - Robert Napier - Sir David Lindsay, First Earl of Balcarres - Patrick Ruthven - Alexander Seton -and Patrick Scot. Proc Soc Antiq Scot 11, no. 2 (1875-1876) 410-438. 

Forman appealed to Lady Hertford further, this time asking her to write to Sir John Popham, the Lord Chief Justice, and his son. Sir Francis Popham. As he told Napier ... 

John Higinbotham, School of Applied Mathematical and Physical Sciences, Napier University, 10 Colinton Road, Edinburgh EH10 5DT, UK... 

Calculators have made multiplication and division as easy as adding and subtracting. Before calculators were invented, however, what did people do In 1614, John Napier (1550-1617) invented logarithms to help people multiply and divide large numbers. 

Logarithms may not seem like a major discovery, but John Napier also evaluated logarithms for numbers such as 2, 3, 5, and 764. (Table E.l has more examples of logarithms.) Enter 2 into your calculator, and press the log key. The display will show 0.3010, to four significant digits. This means that io°-3010 = 2. Repeat to find the log of 3. The display will show 0.4771. This means that io0 4771 = 3. 

Logarithms were used for 350 years to do many complex calculations. Even today, calculators are programmed to do mathematical manipulations with logarithms. So, indirectly, we are still using John Napier s invention. 

The base of natural logarithms, < , is named after Leonhard Euler, 1707-1783, a great Swiss mathematician. Naperian logarithms are named after John Napier, 1550-1617, a Scottish landowner, theologian, and mathematician, who was one of the inventors of logarithms. 

John Napier (or Neper) (1550-1617) Scottish mathematician and physicist Edinburgh, UK. 

Logarithms (John Napier) Napier s logarithms allow the simplification of complex multiplication and division problems. 

Sutton, G.A., Napier, S.T., John, M. and Taylor, A. (1993). Uranium-238 decay chain data, Sci. Total Environ., 13W141, 393 01. 

Throughout this period astronomy held onto its reputation as the best route to the understanding of the world and so came to colour the mathematics passed down to us. Much mathematical invention and discovery, such as John Napier s (1550-1617) algorithms, was in response to the immediate requirements of observational astronomy and the changing cosmology. Much of modern mathematics as it has developed is an indirect reflection of the heavens which in turn influence engineering by that indirect route. 

Natural logarithm of the ratio of two quantities with same name is neper. This dimensionless unit is called after John Napier (1550-1617), Scottish mathematician, inventor of logarithm. Usually decibels measure sound pressure levels (SPL). Sound intensity is compared with the least 10 - usually 10 = 0.01 W which human ear can hear. The ratio of measuring sound intensity to the least is possible to calculate but the range is too wide that cause inconvenience. This is removed by introducing of logarithmic scale with decimal multiplier 0.1 1 g (I/Io). 

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