P104 ORACLE 104 Sat24 Sep ITV 2100:10         SATURDAY:  8.00 CRUCIBLE - SCIENCE IN SOCIETY Solar power research is the subject of tonight's programme. 9.00 CALEB WILLIAMS Caleb manages to reunite with his friends. 10.00 4 TRACK — LIVE Four hours of live music from a host of stars including Big Country, The Belle Stars, The Strawbs & David Essex. 2.00 CLOSEDOWN    SONY WATCHMAN  - revolutionary flat TV  screen.........PAGE 123 