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Hebrew astrolabe
Probably Spain, about AD 1345 - 1355
This stunning instrument embodies perfectly
the peaceful exchange of knowledge and ideas between Christian,
Jewish and Muslim scholars in medieval Spain before 1492.
Ancient Greek astronomical and mathematical
texts were translated, discussed and commented upon. Instruments
based on these texts were made and ideas taken from here all across
Europe by travelling scholars.
The use of Arabic numerals and many words in
modern European languages, which still reveal their Arabic origin
(such as Algebra, Algorithm etc.) originated at this time.
An astrolabe is an astronomical instrument
that enables the user to determine the time during the day with the
help of the sun, and at night with the help of the stars. It can
also be used in the preparation of horoscopes and for surveying
purposes – to name but a few of its functions.
Scientific instruments with Hebrew markings are extremely rare
and only a handful are known to have survived. Even more
excitingly, research has shown that some of the markings on this
astrolabe are in Hebrew letters, but in Arabic language – an
indication that the instrument was made within a Jewish community
that lived within Arabic society.
Interestingly, the design of the instrument combines both
Western European motifs, such as the quatrefoil, and Islamic
decorative elements.
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