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铃铃铃,铃铃铃。物理探究课开始了。物理老师端坐在实验室的讲台上,睿智的小眼睛扫了我们一眼,便开始有条不紊地介绍探究活动的情景了:大家都见过老式摆钟吧,摆钟运转计时是靠那个左右不停摆荡的摆锤。但是,上完发条后的摆钟,几天后摆锤会振幅减小,越摆越近,可它仍能准确计时,试探究其内在原因。霎时,实验室里静得连一根针掉在地里都听得见。老师的话如一根磁针,吸引着每个人的心,突然,实验室里沸腾了,大家都认真地探究起来。我得先将摆锤模型简化出来。用什么器材呢?有了,就用铁架台、细线和小球便可模拟摆锤的真实情景。将小球用细线拴住,绑在铁架台上。拨动
Bells, bells, bells Physics inquiry class began. The physical teacher sat on the podium in the lab and the little wispy eyes glanced at us and began to systematically introduce the exploratory scene: we all saw the old-style pendulum clock, Swinging pendulum However, after winding the clock, after a few days the amplitude of the pendulum will decrease and the closer it is, the more accurate the timing can be. Suddenly, even in the laboratory, a needle fell in the ground can be heard. The teacher’s words, like a magnetic needle, attracted everybody’s heart. Suddenly, the lab was boiling, and everybody seriously studied. I have to simplify the pendulum model first. With what equipment? Yes, with the iron platform, thin lines and small ball can simulate the real situation pendulum. Will be small ball tied, tied to the iron stand. Dial