Viteza luminii
Viteza luminii in
- Vid: 299.792.458 m/s
- Aer: 299.702.547 m/s
- Diamant: 124.034.943 m/s
- Apa: 228.849.205 m/s
- Gheata: 228.849.205 m/s
- Alcool etilic: 220.435.631 m/s
- Plexiglas: 198.538.052 m/s
- Sare (NaCl) : 194.670.427 m/s
- Sticla: 197.231.880 … 180.597.866 m/s
- Zircon: 156.141.905 m/s
- Bioxid de titaniu (in stare nativa): 103.127.781 m/s
- Fosfat de Galiu (GaP) : Lumina Vizibil - 88.959.186 m/s , Infrarosu - 93.685.143 m/s (variabil in fuctie de frecventa)















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