反はん射しゃ率りつ

noun

reflectance; reflectivity

Technical term used in physics, optics, and engineering to describe the fraction of incident light or radiation reflected by a surface.

• この塗と料りょうは反はん射しゃ率りつが高たかいので、夏なつの暑あつさを軽けい減げんできます。

  This paint has high reflectance, so it can reduce summer heat.

• 鏡かがみの反はん射しゃ率りつはほぼ100パーセントに近ちかい。

  The reflectance of a mirror is close to nearly 100 percent.