GONIOMETER n.
als, or the inclination of planes. Contact, or Hand, goniometer, a goniometer having two movable arms (ab, cd), between which (at ab) the faces of the crystals are placed. These arms turn about a fixed point, which is the center of the graduated circle or semicircle upon which the angle is read off. -- Reflecting goni…
GREEN a.
sts; -- called also mountain green. -- Green ebony. (a) A south American tree (Jacaranda ovalifolia), having a greenish wood, used for rulers, turned and inlaid work, and in dyeing. (b) The West Indian green ebony. See Ebony. -- Green fire (Pyrotech.), a composition which burns with a green flame. It consists of sulp…
GREGORIAN a.
ize the civil year with the solar, and also the regulation of the time of Easter and the movable feasts by means of epochs. See Gregorian year (below). -- Gregorian chant (Mus.), plain song, or canto fermo, a kind of unisonous music, according to the eight celebrated church modes, as arranged and prescribed by Pope Gr…
HALLELUIAH; HALLELUJAH n.
Praise ye Jehovah; praise ye the Lord; -- an exclamation used chiefly in songs of praise or thanksgiving to God, and as an expression of gratitude or adoration. Rev. xix. 1 (Rev. Ver. ) So sung they, and the empyrean rung With Hallelujahs. Milton. In those days, as St. Jerome tells us,"any one as he walked in the field…