To do this, we utilize an item known as a viewport. A viewport is a shape (usually a rectangle but can be any shape) that is drawn into paper space. Think of them as a TV screen. Inserting a viewport into paper spaces places a camera into model space.
Nuclear fusion and nuclear fission are different types of reactions that release energy due to the presence of high-powered atomic bonds between particles found within a nucleus.
Nuclear fusion is when two small atoms combine to form a larger, more stable nucleus. This releases even more energy than nuclear fission. Light nuclei fuse together into a larger nucleus, but the larger nucleus has less mass than the total of the lighter nuclei. The mass is lost as energy.