想象力,特别是科学的想象能力,从来就是科学进步的一个重要支点。著名物理学家爱因斯坦曾说过:“想象力比知识更重要,因为知识是有限的,而想象力概括着世界上的一切,推动着进步,并且是知识进化的源泉。严格地说,想象力是科学研究中的实在因素。”所以在中学物理教学中,应该把想象力作为培养学生基本思维能力的一个重要方面。一道科学想象题在“机械振动”的教学中,学生学了简谐振动的知识以后,我们上了一堂习题课,在这堂课上,只讨论了一道选编的题目: 如果沿地球两极间的地轴钻一个洞,当一物体从北极无初速地落入这无底洞时,物体将如何运动?设地球是密度均匀的圆球体,且物体在地球内部所受地球引力与地心至物体间的 Imagination, especially the imagination of science, has always been an important fulcrum of scientific progress. The famous physicist Einstein once said: “Imagination is more important than knowledge, because knowledge is limited, and imagination sums up everything in the world, promotes progress, and is the source of knowledge evolution. Strictly speaking, “Imagination is a real factor in scientific research.” Therefore, in middle school physics teaching, imagination should be used as an important aspect of cultivating students’ basic thinking skills. A scientific imagination was taught in ”mechanical vibration." After students learned the knowledge of harmonic vibrations, we took a recitation class. In this class, only one selected topic was discussed: If you walk along the earth’s poles A hole is drilled between the earth’s shafts. When an object falls from the North Pole into the bottomless hole without priming velocity, how the object will move? Let the earth be a sphere with a uniform density, and the Earth’s gravity and the earth’s center to the object. of