mathematical equations developed by Hendrik Lorentz and George Francis FitzGerald. These formulas, also known as the Lorentz-FitzGerald contraction, contain the hypothesis that a moving body exhibits a contraction in the direction of motion when itsvelocity is close to the speed of light. (INSERT ILLO - see printed defn in other glossaries with this illo) —Secrets of the Mest Universe Glossary (approved 26-9-90)