The Physical Application of a Triangle Approximation Model.

This article proposes a triangle approximation model that can be used to explain abstract mathematical limit processes in physical problems. The model consists of three approximation laws related to a triangle: when the apex angle of an isosceles triangle tends to zero, the bottom two angles are each approximately 90°, the two sides of the triangle are approximately perpendicular to the base, and the length of the base is approximately the same as the arc length. The model is applied to various physics examples, including centripetal acceleration, Ampere's law, Young's double-slit interference, and the electric potential of an electric dipole, to demonstrate its validity and practicality. The model can help bridge the gap between abstract concepts and concrete applications in physics education. [Extracted from the article]