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单词 primary rainbow
释义

Definition of primary rainbow in English:

primary rainbow

noun

  • The rainbow produced when light is dispersed within each raindrop by refraction with a single internal reflection, having colours ranging from red on the outside to violet on the inside, and which is the inner and usually brighter rainbow when two are seen.

Origin

Mid 17th century; earliest use found in Robert Hooke (1635–1703), natural philosopher.

Definition of primary rainbow in US English:

primary rainbow

noun

  • The rainbow produced when light is dispersed within each raindrop by refraction with a single internal reflection, having colours ranging from red on the outside to violet on the inside, and which is the inner and usually brighter rainbow when two are seen.

Origin

Mid 17th century; earliest use found in Robert Hooke (1635–1703), natural philosopher.
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更新时间：2025/2/7 3:38:31