屈折率(くっせつりつ)

くっせつりつ
noun
refractive index; index of refraction
1. refractive index; index of refraction
A physical measure of how much light bends, or slows, when it passes into a material. A higher value means light is refracted more strongly.
ガラスの屈折率(くっせつりつ)を測(はか)る。
To measure the refractive index of glass.
水(みず)とガラスでは屈折率(くっせつりつ)が違(ちが)う。
Water and glass have different refractive indices.
レンズの設計(せっけい)では材料(ざいりょう)の屈折率(くっせつりつ)が重要(じゅうよう)になる。
In lens design, the refractive index of the material is important.

A physics term expressing how strongly a transparent medium bends light relative to a vacuum. Diamonds appear brilliant because of their very high refractive index.

Common collocations

Related words

Related Words

Related: 反射(はんしゃ) (reflection)
general
Added 2026.5.16 12:10 · Revised 2026.9.2 13:02
27500/27662_kussetsuritsu