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 fission (division) of certain large unstable atomic nuclei results in usable energy. Nuclear fission also occurs in a nuclear bomb, but for nuclear energy the fission process is controlled and takes place in a nuclear fission reactor (Cattenom is pictured). There are various types of nuclear fission reactors. See references for details.