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 feeling of tiredness which is either extreme, persistent or both. The flu can cause you to feel tired and drained, particularly when your joints are aching, your nose is streaming, and you have a headache. These symptoms often appear at the start of the flu episode and may precede other symptoms.