Click the Back button on your browser to Exit the Glossary diverge To move in different directions from a common point or from each other. The opposite of diverge is converge . A concave lens which has both edges bulging inward. A convex lens which has both edges bulging outward. One of the four fundamental forces in nature.
Electrons orbit the nuclei of atoms and are the principle tool of molecular bonding.
Click the Back button on your browser to Exit the Glossary electroscope A device that enables you to determine if two objects have opposite or like charges. The distance from a lens or mirror to its focal point. The focal length, f, is the defining parameter of most lenses and mirrors. See also focal length incident Falling or shining upon. When light is incident on something, the light may be reflected , refracted , absorbed, or any combination of these.