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在物理实验和解题中,利用图像往往可以起到“化难为易、化否为能”的妙用.一般说来,两个物理量间的关系有很多都不是一次函数关系,若直接以这两个物理量为坐标,所画出的图像就不是直线,这样就无法根据图像找出两个物理量间的定量关系,也很难利用图像来解决实际问题.因此,在实验和解题中,如果两个物理量间的关系不是一次函数关系,我们就需要去寻找呈一次函数关系的自变量和因变量,再以这两个变量为坐标画图,将图像由曲线转变为直线,进而利用直线型图像来确定物理量间的定量关系或解决实际问题,这就是“化曲为直”的思想.基于此,笔者结合
In physics experiments and problem solving, the use of images often can play a magical effect of “making things difficult and not able to work.” Generally speaking, many of the relations between two physical quantities are not a linear function, The two physical quantities are coordinates and the drawn image is not a straight line, so that it is impossible to find the quantitative relationship between two physical quantities according to the image, and it is very difficult to use the image to solve the actual problem.Therefore, in the experiment and problem solving, If the relationship between the two physical quantities is not a linear function, we need to find independent variables and dependent variables that are a linear function. Then we draw the two variables as coordinates and draw the image from the curve to the straight line, Image to determine the quantitative relationship between physical quantities or to solve practical problems, which is “Construe to Straight ” Based on this, the author combined