an eyepiece consisting of two plano-convex lenses, the plane sides of which both face the eye.
[hahy-guh nz, hoi-; Dutch hoi-gens] /ˈhaɪ gənz, ˈhɔɪ-; Dutch ˈhɔɪ gɛns/ noun 1. Christian [kris-chuh n;; Dutch kris-tee-ahn] /ˈkrɪs tʃən;; Dutch ˈkrɪs tiˌɑn/ (Show IPA), 1629–95, Dutch mathematician, physicist, and astronomer. /ˈhaɪɡənz; Dutch ˈhœixəns/ noun 1. Christiaan (ˈkristiːˌaːn). 1629–95, Dutch physicist: first formulated the wave theory of light Huygens (hī’gənz, hoi’gěns) Dutch physicist and astronomer […]
noun, Optics, Physics. 1. the principle that all points on a wave front of light are sources of secondary waves and that surfaces tangential to these waves define the position of the wave front at any point in time.
[huh-zah] /həˈzɑ/ interjection 1. (used as an exclamation of joy, applause, appreciation, etc.) hurrah! noun 2. the exclamation “huzzah.”. 3. an instance of giving praise or applause; accolade: The newspaper’s review was one big huzzah for the new movie. verb (used without object) 4. to shout “huzzah.”. verb (used with object) 5. to salute with […]
[hahyt-n-with-roh-bee, ‐with‐] /ˈhaɪt n wɪθˈroʊ bi, ‐wɪð‐/ noun 1. an urban district in Merseyside, NW England, E of Liverpool.