V2EX far-red

Far-red

释义 Definition

far-red(远红光/远红):指比可见红光波长更长、接近红外的光,通常约在700800 nm范围内;在植物学中常用于讨论光敏色素(phytochrome)对植物生长发育的调控。(注:在不同学科或文献中具体波段界定可能略有差异。)

发音 Pronunciation (IPA)

/fr rd/

例句 Examples

Far-red light can trigger shade-avoidance responses in plants.
远红光可以触发植物的避阴反应。

By manipulating the red to far-red ratio, researchers can influence seed germination and stem elongation.
通过调控红光与远红光的比例,研究人员可以影响种子萌发和茎的伸长。

词源 Etymology

far-red 是由 far(远的、更偏离中心的)+ red(红色/红光)构成的复合形容词/名词用法,字面意思是“更靠边的红色”。在光谱语境里,它表示位于红光之后、更接近红外的一段光,因此译作“远红(光)”。

相关词 Related Words

文学与典籍 Literary Works

  • Plant Physiology(Taiz & Zeiger):讨论光敏色素系统时常出现 red / far-red 的对照与“red:far-red ratio”。
  • Photomorphogenesis in Plants(Kendrick & Kronenberg):在植物光形态建成章节中频繁使用 far-red light 等术语。
  • Introduction to Plant Physiology(William G. Hopkins 等相关教材版本):在植物对光的感受与信号传导部分出现 far-red 用法。
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