**Evaluating** each other, the three creatures stood in tight silence before Rhyn spoke at last.

"Sometimes I don't either," she said, mentally **evaluating** the discussions she'd recently had with Wynn, Gabriel and Past-Death.

The most important improvements in connexion with electrometers are due, however, to Lord Kelvin, who introduced the guard plate and used gravity or the torsion of a wire as a means for **evaluating** the electrical forces.

Archimedes contributed to the knowledge of these curves by determining the area of the parabola, giving both a geometrical and a mechanical solution, and also by **evaluating** the ratio of elliptic to circular spaces.