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Words Kanji Guides About

不ふ可か視し光こう線せん

Meanings

1

noun

invisible ray

Technical term used in physics and optics for electromagnetic radiation outside the visible spectrum, such as ultraviolet or infrared rays.

紫し外がい線せんは不ふ可か視し光こう線せんの一いっ種しゅです。
Ultraviolet rays are a type of invisible ray.

Kanji

不negative, non-, bad
可can, passable, approval
視inspection, regard as, see
光ray, light
線line, track

Similar words

可か視し光こう線せん
Refers to visible light rays, the opposite of 不可視光線.

Etymology

Compound of 不可視 (invisible) and 光線 (light ray). The exact historical derivation is uncertain, but the term follows standard Sino-Japanese word formation patterns.