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初中物理下册第二章第七节,利用观察气体热膨胀的演示实验装置,来说明黑色表面的物体对太阳辐射的吸收本领比白色表面的物体强,针对此实验见效时间较长,可见度较小的弱点,我们以全新的思路,重新设计了一个较理想,取材方便和相当实用的演示仪器——热辐射吸收本领演示仪。利用泡沫塑料受热熔化的性质,竭力使学生在最短的时间内直观、深刻地
The seventh chapter of the second chapter of the junior high school physics textbook uses a demonstration experimental device for observing the thermal expansion of gas to illustrate that the objects on the black surface have stronger absorption of solar radiation than the objects on the white surface. The results for this experiment are longer and the visibility is smaller. Weaknesses, we have redesigned a more ideal, easy-to-use, and practical demonstration instrument, the heat radiation absorption ability demonstration instrument, with a new idea. Utilizing the properties of foam melting by heat, it strives to make students intuitive and profound in the shortest possible time.