| Answer | Crossword Clue |
|---|---|
| MAGNITUDE | Star brightness measure |
| IQTEST | Brightness measure |
| LUMEN | Brightness measure |
| IQTEST | Measure of brightness |
| WATT | Bulb-brightness measure |
| IQTESTING | Way to measure brightness |
| LUMEN | Measure of light's brightness |
| INDIAQUEBEC | Brightness measure, to a pilot |
| IQTESTS | Battery used to measure brightness? |
| luminance | the measure of the brightness of a surface |
| luminances | LUMINANCE, the measure of the brightness of a surface |
