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单词 chemical ray
释义

Definition of chemical ray in English:

chemical ray

noun
historical

  • An invisible constituent of light which acts on a photographic plate and has other chemical effects; an actinic ray; an ultraviolet ray; usually in plural.

Origin

Early 19th century; earliest use found in Journal of Natural Philosophy, Chemistry and the Arts.

Definition of chemical ray in US English:

chemical ray

noun
historical

  • An invisible constituent of light which acts on a photographic plate and has other chemical effects; an actinic ray; an ultraviolet ray; usually in plural.

Origin

Early 19th century; earliest use found in Journal of Natural Philosophy, Chemistry and the Arts.
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更新时间：2025/6/19 15:18:42