Secchi disk

GPTKB entity

Statements (28)
Predicate Object
gptkbp:instanceOf scientific instrument
gptkbp:attachedTo measured line
gptkbp:color white
alternating black and white quadrants
gptkbp:diameter 20 to 30 centimeters
https://www.w3.org/2000/01/rdf-schema#label Secchi disk
gptkbp:inventedBy gptkb:Angelo_Secchi
1865
gptkbp:lowered_into gptkb:water
gptkbp:material gptkb:plastic
metal
wood
gptkbp:measurement_unit Secchi depth
gptkbp:namedAfter gptkb:Angelo_Secchi
gptkbp:relatedTo water clarity
turbidity
gptkbp:Secchi_depth depth at which disk is no longer visible
gptkbp:shape circular
gptkbp:used_in oceanography
environmental scientists
citizen scientists
limnology
lake managers
gptkbp:usedFor measuring water transparency
gptkbp:bfsParent gptkb:Giovanni_Secchi
gptkb:Angelo_Secchi
gptkb:Pietro_Angelo_Secchi
gptkbp:bfsLayer 7