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                    Statements (12)
| Predicate | Object | 
|---|---|
| gptkbp:instanceOf | gptkb:scientific_instrument | 
| gptkbp:component | gptkb:reservoir resonance tube tuning fork | 
| gptkbp:field | acoustics | 
| gptkbp:namedAfter | gptkb:Henry_Briggs | 
| gptkbp:principle | resonance of sound waves | 
| gptkbp:usedFor | measuring the speed of sound in air | 
| gptkbp:usedIn | physics experiments | 
| gptkbp:bfsParent | gptkb:Lyman_James_Briggs | 
| gptkbp:bfsLayer | 4 | 
| https://www.w3.org/2000/01/rdf-schema#label | Briggs' apparatus |