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 is a symptom that usually has some underlying cause. Fatigue may be described by people in different ways, and may include some combination of the following (both mental and physical): weakness, lack of energy, constantly tired or exhausted, lack of motivation, difficulty concentrating, and/or.