Perpendicular

(noun.) an extremely steep face.

(noun.) a Gothic style in 14th and 15th century England; characterized by vertical lines and a four-centered (Tudor) arch and fan vaulting.

(noun.) a straight line at right angles to another line.

(adj.) extremely steep; 'the great perpendicular face of the cliff' .

(adj.) intersecting at or forming right angles; 'the axes are perpendicular to each other' .

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• When a ray of light passes from water or glass into air, the refracted ray is bent away from the perpendicular so that the angle of refraction is greater than the angle of incidence. 伯莎M.克拉克. 科学通论.
• Little white villages surrounded by trees, nestle in the valleys or roost upon the lofty perpendicular sea-walls. 马克·吐温. 傻子出国记.
• These four perpendicular ranges of windows admitted air, and, the fire being kindled, heat, or smoke at least, to each of the galleries. 沃尔特·司各特. 艾凡赫.
• If the sunbeam strikes the mirror at an angle of 32° with the perpendicular, the path of the reflected ray also makes an angle of 32° with the perpendicular. 伯莎M.克拉克. 科学通论.
• The cliff arose for several hundred feet on my right, and on my left was an equal and nearly perpendicular drop to the bottom of a rocky ravine. 埃德加·赖斯·巴勒斯. 火星公主.
• It was found, however, that the perpendicular pressure of a few inches of water was quite sufficient to force the gas through the mains and small pipes of an extensive range of streets. 弗雷德里克·科利尔·贝克维尔. 伟大的事实.
• They are perpendicular borings into the ground through which water rises to the surface of the soil, producing a constant flow or stream. 佚名. 神奇的知识之书.
• At a little distance up the river rose mighty perpendicular bluffs, from the very base of which the great river seemed to rise. 埃德加·赖斯·巴勒斯. 火星战神.
• If a mirror is held so that a ray of light strikes it in a perpendicular direction, the light is reflected backward along the path by which it came. 伯莎M.克拉克. 科学通论.
• Wadsworth with his division, which had arrived the night before, lay in a line perpendicular to that held by Hill, and to the right of Hancock. 尤利西斯·格兰特. U．S．格兰特的个人回忆录.
• The angle of refraction is the angle formed by the refracted ray and the perpendicular to the surface at the point where the light strikes it. 伯莎M.克拉克. 科学通论.
• This was done by making a loop in the wire and putting it over the spike and raising the pole to a perpendicular position. 尤利西斯·格兰特. U．S．格兰特的个人回忆录.
• When light passes from air into water or glass, the refracted ray is bent toward the perpendicular, so that the angle of refraction is smaller than the angle of incidence. 伯莎M.克拉克. 科学通论.
• Where roads and streets are cut through, perpendicular banks are left and stand as well as if composed of stone. 尤利西斯·格兰特. U．S．格兰特的个人回忆录.
• The descent was steep but not perpendicular. 尤利西斯·格兰特. U．S．格兰特的个人回忆录.

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