คำว่า ' irradiation ' ( N )
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คำนิยามในภาษาอังกฤษ (definition) :
[n.] Act of irradiating, or state of being irradiated.
[n.] Illumination; irradiance; brilliancy.
[n.] Fig.: Mental light or illumination.
[n.] 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.