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gptkbp:instance_of
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gptkb:philosopher
gptkb:physicist
gptkb:Mathematician
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gptkbp:bfsLayer
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4
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gptkbp:bfsParent
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gptkb:Hellenistic_Empires
gptkb:Lesbos
gptkb:Ptolemaic_period
gptkb:Alexandria
gptkb:Hellenistic_Greece
gptkb:Strabo
gptkb:The_Parian_Marble
gptkb:Archimedes
gptkb:Hellenistic_Period
gptkb:The_Great_Library
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gptkbp:associated_with
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gptkb:Hellenistic_period
gptkb:Library_of_Alexandria
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gptkbp:birth_date
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c. 276 BC
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gptkbp:born
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gptkb:Cyrene
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gptkbp:contributed_to
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gptkb:Mathematician
gptkb:observatory
geography
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gptkbp:contribution
|
latitude and longitude system
estimation of the distance from the Earth to the Sun
calculation of leap years
early map-making techniques
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gptkbp:death_date
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c. 194 BC
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gptkbp:died_in
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gptkb:Alexandria
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gptkbp:famous_quote
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" He who knows the world knows himself"
" The Earth is a great sphere"
" The sun is the measure of all things"
" The world is a sphere"
" To measure the Earth is to measure the universe"
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gptkbp:field
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gptkb:Mathematician
gptkb:observatory
gptkb:geographical_feature
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gptkbp:has_influence_on
|
gptkb:Mathematician
gptkb:observatory
subsequent geographers
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https://www.w3.org/2000/01/rdf-schema#label
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Eratosthenes
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gptkbp:influence
|
gptkb:physicist
gptkb:Ptolemy
gptkb:Hipparchus
mathematical sciences
modern geography
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gptkbp:influenced_by
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gptkb:Aristotle
gptkb:Plato
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gptkbp:invention
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geographical coordinates
prime number sieve
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gptkbp:is_active_in
|
gptkb:Hellenistic_period
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gptkbp:is_associated_with
|
gptkb:ancient_Greece
gptkb:Library_of_Alexandria
Hellenistic science
|
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gptkbp:is_considered
|
the father of geography
one of the first to use the term 'geography'
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gptkbp:is_known_for
|
his contributions to mathematics
his work in geography
his calculations of the Earth's size
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gptkbp:known_for
|
gptkb:Eratosthenes'_sieve
calculating the Earth's circumference
developing the concept of latitude and longitude
developing the Sieve of Eratosthenes
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gptkbp:language
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Greek
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gptkbp:legacy
|
considered the father of geography
influenced later geographers
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gptkbp:notable_work
|
gptkb:geographical_feature
Chronography
On the Measurement of the Earth
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gptkbp:occupation
|
gptkb:chief_librarian_at_the_Library_of_Alexandria
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gptkbp:served_in
|
gptkb:chief_librarian_of_the_Library_of_Alexandria
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gptkbp:technique
|
estimating distances using the sun's angle
using shadows to measure the Earth's circumference
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gptkbp:was_a
|
gptkb:physicist
gptkb:Educational_Institution
philosopher of science
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gptkbp:wrote
|
gptkb:geographical_feature
Chronographia
Catasterismi
On the Measurement of the Earth
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