论文部分内容阅读
高中物理教材第二册第十一章改变内能的两种方式一节中设计了两则实验:其一,用空气压缩点火仪演示,压缩气体做工内能增加,效果很好;其二,气体对外做功内能减少。由于没有现成的仪器,我们在教材给出的装置基础上加以改进,制作了一台教具来演示该实验,实验效果较好。1 材料设计与制作(图1)(1)密闭容器用2 mm 厚,d=12 cm,h=20 cm 铁管及等厚度铁板焊接而成,底为法兰盘加胶垫用螺母紧固密
High school physics textbooks Volume II, Chapter XI Two ways to change internal energy In the section, two experiments were designed: First, demonstration with an air compression ignition instrument, the compressed gas workmanship can be increased, and the effect is good; secondly, Gas can do less work internally. Because there are no ready-made instruments, we have improved on the basis of the devices given in the teaching materials. We have produced a teaching aid to demonstrate the experiment. The experiment has good results. 1 Material design and production (Figure 1) (1) Closed container with 2 mm thick, d = 12 cm, h = 20 cm Iron tube and equal thickness of iron plate welded together, the bottom of the flange plus pad nut Solid