What Types of Radiation Are There? The radiation one typically encounters is one of four types: alpha radiation, beta radiation, gamma radiation, and x radiation. Neutron radiation is also encountered in nuclear power plants and high-altitude flight and emitted from some industrial radioactive sources. Alpha Radiation.
Fatigue: A condition characterized by a lessened capacity for work and reduced efficiency of accomplishment, usually accompanied by a feeling of weariness and tiredness. Fatigue can be acute and come on suddenly or chronic and persist.
Fatigue may be described by people in different ways, and may include some combination of the following (both mental and physical): 1  weakness, 2  lack of energy, 3  constantly tired or exhausted,  lack of 1  motivation, difficulty concentrating, and/ 2 or. difficulty starting and completing tasks.