从宏观和微观来看内能与应变能

View on internal energy and strain energy form macroscopy and microscopy

通过对宏观意义上和微观意义上内能定义的分析和比较,指出内能是一个相对值,单纯地考虑其某一时刻的绝对值是没有意义的.进而得出微观上粒子间距的变化是物体宏观变形的物理根源,二者的作用效果相一致的结论.

By analyzing and comparing the definition of internal energy in macroscopy and microscopy, points out internal energy is a relative value, it is nonsensical to define an absolute value of inernal energy in some time, draws the conclusion that space change of particles in microscopy is physical origin of elastic body deformation in macroscopy, both effects are identical.