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.
The Fission Process in the Nuclear Reactor. A neutron colliding with a 235 U nucleus causes it to split into two nuclei (fission fragments, typically one heavier and one lighter nucleus) and several free neutrons (fission neutrons).