Classic contradiction matrix (39 engineering parameters/ 40 invention principles) | 4. Length/angle of stationary object | 6. Area of stationary object | 12. Shape | 21. Power |
4. Length/angle of stationary object | - | 17, 7, 10, 40 | 13, 14, 15, 7 | 12, 8 |
6. Area of stationary object | 26, 7, 9, 39 | - | - | 17, 32 |
12. Shape | 13, 14 | - | - | 4, 6 |
21. Power | - | 17, 32 | 29, 14 | - |