| 光量 | [光 量] quantity of light; luminosity [Add to Longdo] |
| 光量 | [こうりょう, kouryou] (n) intensity (e.g. radiation, light); amount of light (radiation) [Add to Longdo] |
| 光量計 | [こうりょうけい, kouryoukei] (n) actinometer; actinograph [Add to Longdo] |
| 光量子 | [こうりょうし, kouryoushi] (n) light quantum [Add to Longdo] |