11. These then form a conjugate pair . 12. Both preserve the correct energy and power relationships by making power conjugate pairs of variables analogous. 13. Symbols of the same colour indicate elements of same order, which occur in conjugate pairs . 14. The eigenvectors associated with these complex eigenvalues are also complex and also appear in complex conjugate pairs . 15. All properties of physical entities exist only in pairs, which Bohr described as complementary or conjugate pairs . 16. The number of particles is, like volume and entropy, the displacement variable in a conjugate pair . 17. Thus, non-real roots of real polynomials occur in complex conjugate pairs ( " see" 18. Again, define and to be conjugate pairs , and the to be the natural variables of some potential. 19. For a real matrix the nonreal eigenvectors and generalized eigenvectors can always be chosen to form complex conjugate pairs . 20. Examples of such conjugate pairs are position and momentum of a particle and components of spin measured around different axes.