Irradiation
Part of speech: noun
Definition: An act of irradiating, or state of being irradiated. illumination; irradiance; brilliance. fig.: mental light or illumination. the apparent enlargement of a bright object seen upon a dark ground, due to the fact that the portions of the retina around the image are stimulated by the intense light; as when a dark spot on a white ground appears smaller, or a white spot on a dark ground larger, than it really is, esp. when a little out of focus. a process of sterilisation whereby radiation is passed through a bag containing food, utensils, etc., to sterilise the contents.
Radiation
Part of speech: noun
Definition: The shooting forth of anything from a point or surface, like the diverging rays of light; as, the radiation of heat.The process of radiating waves or particles.The transfer of energy via radiation (as opposed to convection or conduction)Radioactive energy
Example sentence: My Miyoshi studio in Japan is located in the northern part of Saitama, which puts it in quite close proximity to Fukushima. As such, we can feel the effects of radiation.