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学校科技小组活动,老师启发我们捕捉创造发明题材,我绞尽脑汁也想不出来。在一次参加发明展览时,一件小小的作品引起了我的注意:它把加热煤油用液柱高度显示对比的《焦耳定律》演示实验改进为加热密闭气体用液滴显示对比。我看到了这种“改进”的创造性:加热气体比加热液体快得
School science and technology group activities, teachers inspired us to capture the theme of creating inventions, I can not think of racking their brains. When I participated in an exhibition of inventions, I noticed a small piece of work: it improved the “Joule’s Law” demonstration experiment in which the heated kerosene was compared with the liquid column height display, and heated the closed gas with a droplet display contrast. I saw this “improved” creativity: heating gas faster than heating liquid