Harrison's marine chronometer

GPTKB entity

Statements (28)
Predicate Object
gptkbp:instanceOf marine chronometer
gptkbp:accuracy within a few seconds over weeks at sea
gptkbp:award Longitude prize
gptkbp:awardedBy gptkb:Board_of_Longitude
gptkbp:category gptkb:navigation
scientific instrument
gptkbp:displayedAt gptkb:National_Maritime_Museum
gptkbp:first_successful_model H4
gptkbp:hasModel gptkb:H1
H3
H2
H4
https://www.w3.org/2000/01/rdf-schema#label Harrison's marine chronometer
gptkbp:influenced development of marine navigation
gptkbp:inventedBy gptkb:John_Harrison
1761
gptkbp:location gptkb:Royal_Observatory,_Greenwich
gptkbp:material brass
gptkbp:mechanismOfAction escapement
remontoire
spring balance
temperature compensation
gptkbp:purpose determine longitude at sea
gptkbp:significance solved longitude problem
gptkbp:used_in gptkb:Royal_Navy
James Cook
gptkbp:bfsParent gptkb:Pendulum_clock
gptkbp:bfsLayer 8