OPTICS
| Date | Clue |
|---|---|
| 2020-06-23 | Way things look to the public, informally |
| 2020-06-07 | Concern for a P.R. team |
| 2020-01-07 | Public perception, in political lingo |
| 2018-02-17 | Public perception |
| 2014-01-02 | Science of light |
| 2005-12-01 | Field of vision? |
| 2001-06-07 | Field of vision? |
| 1999-05-08 | High-tech subject |
| 1997-08-21 | Branch of physics |
| 1994-06-19 | Study of light |