Customer Profile: |
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 CartéGraph Systems, Inc. is the leading provider of
software technologies dedicated to the collection, management, mapping and analysis of
asset data. CartéGraph software aids in the creation of detailed databases of
history, features, inspections, images, locations, reports and work activities for signs,
signals, roads, pavement markings, bridges, and sewer and water systems. -More-
Take the Trivia Challenge! Answers at bottom of page
1. Athough this ancient scientist is best known for his geography and
astronomy works, he also wrote about astrology.
2. Who was first to use the term 'atlas' for a
collection of maps?
3. Who deduced the value for the ellipticity of the Earth in 1841?
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 New!
Marinus 2.02 (formerly DLG2DWG) converts USGS DLG
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resulting data file in any defined coordinate system, regardless of the coordinate system
upon which the source data is based.
Trivia Answers: This
month's trivia answers were found on the The MacTutor History of
Mathematics Archive Web Site:
http://www-history.mcs.st-and.ac.uk/history/
1. It may seem strange to the modern reader that someone who wrote such
excellent scientific books should write on astrology. However, Ptolemy
sees it rather differently for he claims that the Almagest (his geographical works)
allows one to find the positions of the heavenly bodies, while his astrology book he sees
as a companion work describing the effects of the heavenly bodies on people's lives.
2. Mercator
published corrected and updated versions of Ptolemy's maps in 1578 as the first part of
his 'atlas'. His 'atlas' continued with a further series of maps of France, Germany and
the Netherlands in 1585.
3. Bessel,
a remarkable man who left formal education at the age of 14, made many
contributions to astronomy, mathematics, and geodesy. In 1826 he made a correction to the
seconds pendulum, the length of which is precisely calculated so that it requires exactly
one second for a swing. During 1831-32 he directed geodetical measurements of meridian
arcs in East Prussia, and in 1841 he deduced a value of 1/299 for the ellipticity of the
Earth, the amount of elliptical distortion by which the Earth's shape departs from a
perfect sphere.
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