Refractive index
Indice de réfraction | 屈折率／クッセツリツ | 折射率
Refractive index
The ratio of the speed of light in air and the speed of light in an optically denser medium. Each gemstone has a specific refractive index that, when legible, can identify it.
Refractive index
The ratio of the speed of light in air and the speed of light in an optically denser medium. Each gemstone has a specific refractive index that, when legible, can identify it.
Terms with the same letter
Rack Rack Radiant cut Railroad Ratchet Rate Ream Recess Red diamond Refraction Refractive index Refractometer Regulating organ (regulator) Regulating parts Regulator Repair Repairer Repassage Repeater Repoussé Resonance Retour en vol Retrograde Revolutionary Revolutionary Revolutionary calendar Rhodium plating Rhodochrosite Rim Roch cristal Rock setting Roman numeral IIII on dials Roman numerals Rose cut Rotor Rough Ruby Rutilated quartz