noun
half-value width; full width at half maximum
Technical term in physics and signal processing; often abbreviated as FWHM.
このピークの半値幅は約0.5nmです。
The half-value width of this peak is about 0.5 nm.
半値幅から分解能を推定できる。
The resolution can be estimated from the full width at half maximum.
Compound of 半値 (half value) + 幅 (width). A calque from English 'half-value width'.