Random triples
| Subject | Object |
|---|---|
| gptkb:Ultra_HD_Blu-ray | blue-violet laser |
| gptkb:CD_drives | infrared laser |
| gptkb:4K_UHD_Blu-ray | blue-violet laser |
| gptkb:4K_Ultra_HD_Blu-ray | blue-violet laser |
| gptkb:Blu-ray_Ultra_HD | blue-violet laser |
| gptkb:DVD-ROM_drives | 650 nm wavelength |