tri-sphere earth motion instrument astronomy/simulated sun earth moon running with lights three-finger peaks_朗体模型

tri-sphere earth motion instrument astronomy/simulated sun earth moon running with lights three-finger peaks

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tri-sphere earth motion instrument astronomy/simulated sun earth moon running with lights three-finger peaks

三球仪地球运动仪天文/模拟太阳地球月球运转带灯三指峰

EXW Price: Min. order:

¥68.0
≥1/piece

¥60.0
≥8/piece

¥58.0
≥16/piece

1 piece

Exchage Rate 1 CNY ≈ 0.1404 USD
Stock num 7200 piece

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教学仪器厂家直销教委会员单位价格: 1个68元 8个60元 16个58元

它由代表太阳、地球和月球的三个球组成，并有机械联动装置，用以演示三球关系和由此产生的一些天文现象。为了模仿自然界的真实情况，中间的太阳一般采用发光的灯泡，以照亮地球和月球。地球倾斜地在轨道上绕日旋转，月球绕地球的轨道和地球绕太阳的轨道相交成一个角度。这样就可以演示日食和月食、月球的盈亏、地球的自转和公转、昼夜和四季的交替等现象。
演示要求在遮光室内进行。用手连续推动托板，地球绕太阳公转，月亮绕地球旋转

Update time：20230706173345