1884年国际子午线大会(the International Meridian Conference of 1884, die Internationale Meridiankonferenz 1884)上,确立了格林威治标准时间(GMT: Greenwich Mean Time),决定以通过英国伦敦的格林尼治皇家天文台(Royal Observatory in Greenwich)旧址的一台主要子午仪十字的那条经线为起始经线,称为本初子午线。 经纬仪 (...
经线(meridian, longitude, m Meridian, f laengenlinie): 也称子午线,是人类为度量和测绘假设出来的辅助线,指示南北方向。 纬线(latitude, m Breitenkreis): 和经线一样,也是人类为度量方便而假设出来的辅助线,定义为地球表面某点岁地球自转而形成的轨迹。指示东西方向。 格林威治线(本初子午线),(Greenwich line,...
If the local time at a place is 12:00 noon when it is 00:00 at the Prime Meridian, what is the longitude of that place? A. 60°E B. 90°E C. 120°E D. 180° 相关知识点: 试题来源: 解析 C。本题考查地方时和经度的计算。地球自转一周 360°,时间为 24 小时,所以经度每隔 15°...
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The longitude of the prime meridian is ___. A. 0° B. 90° C. 180° D. 360° 相关知识点: 试题来源: 解析 A。本初子午线的经度是 0 度,这是确定经度的基准线。其他选项 B 90 度、C 180 度、D 360 度都不是本初子午线的经度。反馈...
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If Lily’s hometown is located in the 10th zone of transverse Mercator projection with 6° zones, what is the longitude of the central meridian of the zone of Lily’s hometown? () A. 60° B. 57° C. 30° D. 27° 点击查看答案手机看题 AI智答 联系客服周一至周五 08:30-18:00 登录...
If the longitude of a place is 120°E, what is the angle difference from the Prime Meridian? A. 120° B. 60° C. 240° D. 30° 相关知识点: 试题来源: 解析 A。该地的经度是 120°E,与本初子午线的角度差就是 120 度,故选 A。
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