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物理规律反映的是物理现象及过程中各种因素的内在联系,在探究这些因素之间的关系时,往往需要寻找连结它们的桥梁与纽带,也就是中介。引入中介是我们探究物理规律常用的一种重要的思想方法,这种通过引入中介来探究两个物理量之间关系的思想方法,在历年高考中均有涉及。一、引入第三者作为中介在探究两个物理量之间的关系时,有时需要引入与两者都有直接联系的第三者。如放在水平桌面上静止的物体,探究其对桌面的压力与受到的重力
The laws of physics reflect the internal relations among the physical phenomena and various factors in the process. When exploring the relations among these factors, they often need to find the bridges and ties that link them, that is, the intermediaries. The introduction of intermediaries is an important method of thinking that we commonly use to explore the laws of physics. This method of thinking, which explores the relationship between two physical quantities through the introduction of intermediaries, has been covered in the college entrance exams over the years. I. INTRODUCING A THIRD PARTY AS AN INTERMEDIATE In exploring the relationship between two physical quantities, sometimes it is necessary to introduce a third party with direct contact with both. Such as resting on a horizontal tabletop, explore the pressure on the desktop and the gravity it receives