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1.材料:①选长25cm、宽18cm、厚1cm和长20cm、宽14cm、厚1cm的两块木板。②螺钉3个、线锤一个。 2.自制方法:如下图(略) 3.使用说明:①将测量架对准太阳方向,使立竿的影子落在量度器的刻度上;②调整底座的螺丝,使线锤与测量架上的纵线重合;③观察影子顶端所指的刻度就是当时的太阳高度。 4.实验特点:制作方法简单,使用便于操作,读数直观,学生容易操作和观察,室外观察效果好。
1. Materials: ① election length 25cm, width 18cm, thickness 1cm and length 20cm, width 14cm, thickness 1cm two pieces of wood. ② screw 3, a hammer line. 2. Homemade method: The following picture (abbreviated) 3. Instructions for use: ① the measuring frame aligned with the sun, so that the shadow of the moment falls on the scale of the scale; ② adjust the base of the screw so that the hammer and the measuring frame Vertical line coincidence; ③ observation of the shadow of the top of the scale is the height of the sun. 4. Experimental features: The production method is simple, easy to use, intuitive readings, students easy to operate and observe, outdoor observation effect is good.