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浑天式日晷.png


浑天式日晷

  日是指太阳,晷表示影子。日晷是根据是根据太阳在天空中的实际位置测定时间的一种仪器。此浑天式日晷高8米,圆环直径为6米。由子午环、赤道环和地平环组成。子午环上天轴的角度与哈尔滨纬度45度相同,天轴高端指北,低端指南。当太阳从东方升起从西方落下时,主轴影子落在有刻度的赤道环上,即当时的真太阳时刻。
Sundial of armillary sphere
  “day”refers to the sun, the shadow cast by the sun expresses the shade,sundial is a kind of instrument ofmeasuring time according to the actual position in the sky. Total height of this armillary sphere sundial total height is 8m. the diameter of ring is 6m.it ismade up of noon enclose to sun of armillary sphere, enclose of the equator and flat to enclose. Noon encolse to sun places line shaft which ie the same as harbin 45 of latitude, height end of line shaft points to north,low end points tosouth.when the sun raise from theeast and sets west, the shadow of main axis projects equator with scale, namely it is the true moment of the sun.

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