speedOfLightInVacuumApprox

P88274
predicate

Indicates the approximate numerical value of the speed at which light propagates through a perfect vacuum.

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Observed surface forms (2)

Surface form Occurrences
estimatedSpeedOfLight 1
speedInVacuum 1

Sample triples (3)

Subject Object
1999 Nature paper on light slowed to 17 meters per second 3×10^8 meters per second ⓘ
photon 299792458 m/s via predicate surface "speedInVacuum" ⓘ
Ole Rømer approximately 220,000 km/s via predicate surface "estimatedSpeedOfLight" ⓘ