Slicing strategies will also be an instrument for investigating surfaces that are smooth than spheres and islands. One form that displays up usually adequate to merit consideration that is special the ring-shaped figure referred to as a torus. We come across this form when you look at the area of a donut or perhaps a bagel, together with area of a life preserver or a Life Saver candy. Because of the finish of the guide, we’ll encounter the torus into the research of configuration areas in physics plus in the generalizations of viewpoint to raised measurements, but also for now we need to give consideration to its piece history as being a geometric item in ordinary area.
Among the simplest methods to have a torus would be to produce a area of revolution.
We think about a circle as drawn for a square in a straight airplane, and now we connect one straight side of the square by hinges to a pole called the axis. Since the square rotates across the pole, the going circle traces out a torus. (좀 더…)