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Updated: May 23, 2025
Prince Maurice, the son and successor of the Landgrave, continued, with the assistance of able observers, to keep up the reputation of the observatory of Hesse-Cassel; and the observations which were there made were afterwards published by Snellius.
Willebrod Snellius, mathematical professor of Leyden, introduced the true method of measuring the degrees of longitude and latitude, and Huygens, who had seen his manuscripts, asserted that Snellius had invented, before Descartes, the doctrine of refraction.
He lost his father in his infancy, and was indebted, for the first rudiments of his education, to a clergyman, who had imbibed some opinions of the reformed religion. Under his tuition, Arminius studied, during some time, at Utrecht. After the clergyman's decease, Rudolphus Snellius, a clergyman of eminence, took Arminius under his protection, and, in 1575, placed him at Marpurgh.
STEVINUS. A somewhat larger ring-plain, S. of Snellius, with a border rising on the S. to more than 11,000 feet above a dark interior, which includes a bright central mountain. REICHENBACH. A very abnormally-shaped ring-plain, about 30 miles in diameter, with a rampart nearly 12,000 feet high.
Willebrod Snellius, mathematical professor of Leyden, introduced the true method of measuring the degrees of longitude and latitude, and Huygens, who had seen his manuscripts, asserted that Snellius had invented, before Descartes, the doctrine of refraction.
Willebrod Snellius, mathematical professor of Leyden, introduced the true method of measuring the degrees of longitude and latitude, and Huygens, who had seen his manuscripts, asserted that Snellius had invented, before Descartes, the doctrine of refraction.
Among the mountains W. of Borda there is a peak more than 11,000 feet in height. SNELLIUS. A very fine ring-plain, 50 miles in diameter, S.E. of Petavius, with terraced walls, considerably broken on the S.E. by craters, &c. It rises on the E. nearly 7000 feet above a dark floor, which contains a central mountain.
Willebrod Snellius, mathematical professor of Leyden, introduced the true method of measuring the degrees of longitude and latitude, and Huygens, who had seen his manuscripts, asserted that Snellius had invented, before Descartes, the doctrine of refraction.
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