radiant
A point source from which radiation is emitted. / (astronomy) The apparent origin, in the night sky, of a meteor shower.
A reduction in the level of, or an absence of myelinogenesis
(historical) A Brythonic tribe in Britannia who inhabited an area corresponding roughly to the modern-day county of Norfolk, from the 1st century BC to the 1st century AD.
One who adduces.
物理学者は、図に放射源を記して、放射がどこから放出されているかを示した。
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