名詞 radiometer:

1. meter to detect and measure radiant energy (electromagnetic or acoustic)

ra.di.om.e.ter

n.（名詞）
A device that measures the intensity of radiant energy, consisting of a partially evacuated glass bulb containing lightweight vertical vanes, each blackened on one side, suspended radially about a central vertical axis to permit their revolution about the axis as a result of incident radiation.
輻射計：檢測輻射能強(qiáng)度的一種裝置，裝有一個部分抽干的玻璃管，管內(nèi)有若干輕質(zhì)的垂直翼，每個翼的一邊為黑色，在一個垂直的周圍輻射懸垂，在受到投射輻射時它們可以繞軸旋轉(zhuǎn)
An instrument that detects electromagnetic radiation.
輻射儀：一種測定電磁輻射的儀器

【引伸】
ra.diom.etry
n.（名詞）