September 30, 2013
A lever is the simplest of machines, which utilizes a rigid bar to rotate around a fixed pivot point called a fulcrum in order to exert force on an object (load). If the resistance or load exceeds the strength of the bar, the bar will break. Biomechanically speaking, the arm is a bar, and when the fulcrum is at or above the joint, breakage can easily occur.
July 22, 2013
A long time ago, there was a family that owned a small farm. The father worked very hard to make the farm successful so that he would be able to leave it to his two sons when he died. The elder son, who was married, was named Der-Shin, while the younger son, who was not married, was named Der-Yi.
March 19, 2013
When I was a boy, my grandmother and my martial arts teachers told me many stories. This was very common in China, especially in the old days before television and radio, and especially in previous centuries when the vast majority of the population could not read. While these stories were a main source of entertainment, they also played an important role in the moral and cultural education of the children.