|
gptkbp:instance_of
|
gptkb:plant
|
|
gptkbp:academic_programs
|
simple and effective
|
|
gptkbp:associated_with
|
gptkb:Greenwich_Mean_Time
the Prime Meridian
|
|
gptkbp:color
|
gptkb:red
|
|
gptkbp:constructed_in
|
the 19th century
|
|
gptkbp:cultural_symbol
|
of timekeeping history
|
|
gptkbp:designed_by
|
gptkb:John_Harrison_XX
|
|
gptkbp:diameter
|
1 meter
|
|
gptkbp:dropped_at
|
1 PM
|
|
gptkbp:dropped_from
|
the roof of the Royal Observatory
|
|
gptkbp:feature
|
the Royal Observatory's architecture
the Royal Observatory's public outreach
|
|
gptkbp:first_introduced
|
1833
|
|
gptkbp:function
|
signal the time
|
|
gptkbp:has_been_restored
|
gptkb:1999
|
|
gptkbp:has_public_services
|
for the community
|
|
gptkbp:height
|
2.1 meters
|
|
gptkbp:historical_event
|
the introduction of standard time
|
|
gptkbp:historical_significance
|
standardizing timekeeping
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
The Greenwich Time Ball
|
|
gptkbp:influenced
|
the development of timekeeping technology
the establishment of time zones
|
|
gptkbp:inspired
|
the Time Ball at the Royal Observatory in Edinburgh
similar time balls worldwide
|
|
gptkbp:is_a_solution_for
|
synchronizing ship's clocks
|
|
gptkbp:is_a_subject_of
|
historical studies
|
|
gptkbp:is_a_tool_for
|
navigators at sea
|
|
gptkbp:is_visible_from
|
the River Thames
|
|
gptkbp:landmark
|
in Greenwich
|
|
gptkbp:location
|
gptkb:Greenwich,_London
|
|
gptkbp:made_of
|
wood and painted
|
|
gptkbp:mechanism_of_action
|
gravity-driven
|
|
gptkbp:notable_feature
|
its public visibility
|
|
gptkbp:operated_by
|
gptkb:Royal_Observatory,_Greenwich
|
|
gptkbp:operating_hours
|
daily at noon
|
|
gptkbp:part_of
|
maritime navigation history
|
|
gptkbp:replaced_by
|
electronic time signals
radio time signals
|
|
gptkbp:symbolizes
|
the importance of timekeeping
|
|
gptkbp:used_for
|
synchronizing clocks
|
|
gptkbp:used_in
|
1936
|
|
gptkbp:used_to_mark
|
the start of the workday
|
|
gptkbp:view
|
tourists
|
|
gptkbp:was_a_demonstration_of
|
scientific progress in timekeeping
the importance of precision in timekeeping
|
|
gptkbp:was_a_public_spectacle
|
for local residents
|
|
gptkbp:was_a_signal_for
|
the arrival of trains
|
|
gptkbp:was_a_technological_advancement
|
for its time
|
|
gptkbp:was_part_of
|
gptkb:the_Greenwich_World_Heritage_Site
the Greenwich Observatory's legacy
the Victorian era's timekeeping innovations
|
|
gptkbp:weight
|
about 100 kg
|
|
gptkbp:bfsParent
|
gptkb:National_Maritime_Museum,_Greenwich
|
|
gptkbp:bfsLayer
|
5
|