| Answer | Crossword Clue |
|---|---|
| PHAROSLIGHTHOUSE | Ptolemy's bright idea |
| BRAINSTORM | Bright idea |
| BRAINSTORM | Bright idea. |
| BRAINCHILD | Bright idea |
| ORSON | "Bright Idea" band |
| INCANDESCBULB | Edison's bright idea |
| EDISON | Man with a bright idea? |
| BULB | Symbol of a bright idea |
| EDISON | Inventor with a bright idea |
| EDISON | Inventor with a bright idea? |
