半はん値ち全ぜん幅はば

noun

full width at half maximum; FWHM

Technical term in physics and signal processing; used to describe the width of a peak at half its maximum height.

• このピークの半はん値ち全ぜん幅はばは約やく0.5nmです。

  The full width at half maximum of this peak is about 0.5 nm.