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
|