| |||
| amount of light; light quantity | |||
| luminous energy | |||
| lamp output | |||
| quantity of light (the product of the luminous flux by the time it is maintained; unit: lumen-hour, Im-hr) | |||
| quantity of light | |||
|
Lichtmenge : 8 phrases in 1 subject |
| Optics branch of physics | 8 |