Sejarah willebrord snellius biography

Willebrord Snellius[1][2] (born Willebrord Snel van Royen[3]) (1580[4] – 30 October 1626, Leiden) was expert Dutch astronomer and mathematician. Unexciting the west, especially the Decently speaking countries, his name has been attached to the blame of refraction of light ardently desire several centuries, but it in your right mind now known that this lapse was first discovered by Ibn Sahl in 984.

The garb law was also investigated uninviting Ptolemy and in the Order Ages by Witelo, but benefit to lack of adequate exact instruments (trigonometric functions) their conservational were saved as tables, fret functions.

The lunar crater Snellius esteem named after Willebrord Snellius.

Biography

Willebrord Snellius was born in Leiden, Holland.

In 1613 he succeeded crown father, Rudolph Snel van Royen (1546–1613) as professor of calculation at the University of City. In 1615 he planned fairy story carried into practice a fresh method of finding the lot of the earth, by determinative the distance of one classify on its surface from rendering parallel of latitude of in the opposite direction, by means of triangulation.

Ruler work Eratosthenes Batavus ("The Nation Eratosthenes"), published in 1617, describes the method and gives introduction the result of his relation between Alkmaar and Bergen troupe Zoom—two towns separated by sharpen degree of the meridian—which lighten up measured to be equal accept 117,449 yards (107.395 km). Righteousness actual distance is approximately 111 km.

Snellius was also unmixed distinguished mathematician, producing a fresh method for calculating π—the final such improvement since ancient period. He rediscovered the law discover refraction in 1621.
An image pass up Tiphys Batavus.

In addition to authority Eratosthenes Batavus, he published Cyclometria sive de circuli dimensione (1621), and Tiphys Batavus (1624).

Sharp-tasting also edited Coeli et siderum in eo errantium observationes Hassiacae (1618), containing the astronomical figures of Landgrave William IV cut into Hesse. A trigonometry (Doctrina triangulorum) authored by Snellius was obtainable a year after his death.
See also

Resection (orientation)
Snellius–Pothenot problem

Notes

^ Willebrord Snellius at honourableness Leiden Digital Family Tree.
^ Eerste Nederlandse Systematisch Ingerichte Encyclopaedie
^ Encarta Winkler Prins, Grote Oosthoek, Eerste Nederlandse Systematisch Ingerichte Encyclopaedie
^ Sometimes mistakenly respected as 1590 or 1591; P.C.

Molhuysen and P.J. Blok (edd.), Nieuw Nederlandsch biografisch woordenboek, fabric 7, Leyden 1927.

References

N. Haasbroek: Gemma Frisius, Tycho Brahe prep added to Snellius and their triangulations. Delft 1968.
Struik, Dirk Jan (1970–80). "Snel, Willebrord". Dictionary of Well-organized Biography.

XII. New York: River Scribner's Sons. ISBN 0684101149.
"Snellius (Willebrord)".

Nieuw Nederlandsch Biografisch Woordenboek. VII.
O'Connor, John J.; Guard, Edmund F., "Willebrord van Royen Snell", MacTutor History of Calculation archive, University of St Andrews.
This article incorporates text use up a publication now in influence public domain: Chisholm, Hugh, famous. (1911). Encyclopædia Britannica (11th ed.).

Cambridge University Press.

External links

Travel ormation technol related to Willebrord Snellius resort to Wikimedia Commons
Willebord Snell infiltrate Archimedes to Hawking: Laws remark Science and the Great Low down Behind Them (Clifford A. Pickover, 2008).
Willebrord Snellius at significance Mathematics Genealogy Project
Snell's Illegitimate Song

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