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物理规律是物理现象和物理过程在一定条件下发生、发展和变化的必然趋势,物理规律本身是反映在一定条件下物理事物内在的必然联系,并且物理规律是在一定条件下和一定范围内总结出来的。因此,也只在这个条件下、这个范围内才成立。可见任何物理规律都有其成立的条件。而我们的学生学习和应用物理规律时,往往只知道死背条文而忽视成立的条件和适用范围,在实际应用中乱套,在遇到情况变化时就难以下手。所以,在教学中要重视讲清规律成立的条件和适用范围,让学生理解物
Physical laws are the inevitable trend that physical phenomena and physical processes occur, develop and change under certain conditions. The physical laws themselves are the inevitable connections reflected in the physical things under certain conditions, and the physical laws are concluded under certain conditions and within a certain range from. Therefore, it is only within this context that this area is established. Shows that any physical laws have their conditions established. However, when our students study and apply the laws of physics, they often only know the conditions and the scope of application of the dictation of death and they are in a dilemma in practical applications. Therefore, it is hard to start when encountering changes in circumstances. Therefore, in teaching should pay attention to clarify the law established the conditions and scope of application, so that students understand things