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                    Statements (24)
| Predicate | Object | 
|---|---|
| gptkbp:instanceOf | gptkb:physical_phenomenon | 
| gptkbp:adopted_in_SI | 2019 | 
| gptkbp:category | fundamental constant | 
| gptkbp:dimensions | energy × time | 
| gptkbp:form | E = hν | 
| gptkbp:measures | joule second | 
| gptkbp:namedAfter | gptkb:Max_Planck | 
| gptkbp:reduced_Planck_constant | h/2π | 
| gptkbp:reduces | ħ (h-bar) | 
| gptkbp:relatedTo | energy and frequency | 
| gptkbp:symbol | h | 
| gptkbp:uncertainty | exact (since 2019 redefinition) | 
| gptkbp:used_in | gptkb:Planck's_law gptkb:Schrödinger_equation gptkb:photoelectric_effect gptkb:de_Broglie_wavelength gptkb:Heisenberg_uncertainty_principle quantum mechanics black-body radiation | 
| gptkbp:valuation | 6.62607015×10⁻³⁴ | 
| gptkbp:bfsParent | gptkb:Fermi_energy gptkb:Max_Planck | 
| gptkbp:bfsLayer | 4 | 
| https://www.w3.org/2000/01/rdf-schema#label | Planck constant |