spectrophotometer
分光光度計
解説 Definition
分光光度計。光の吸収を測定する科学機器。
A spectrophotometer is a scientific instrument that measures how much light a substance absorbs or passes through. It is commonly used in chemistry, biology, and laboratory testing to analyze liquids or other samples. The word is technical, but the basic idea is measuring light to learn about a material.
覚え方のコツ Memory Tip
spectrophotometer は spectro + photo + meter に分けると覚えやすい専門語です。spectro は spectrum「スペクトル」、photo は photograph と同じく「光」、meter は thermometer などと同じ「測定器」。つまり、光を波長ごとに分け、試料がどれだけ吸収・透過するかを測る機械です。化学・生物・医療検査で、溶液の濃度や反応の進み具合を数値で調べる場面に出ます。
Split `spectrophotometer` into `spectro + photo + meter`. `Photo` is about light, like in `photograph`, and `meter` means a measuring device, like in `thermometer`. Connect `spectro` with `spectrum`, and you can remember it as a machine that measures light by wavelength. It is used in science to study how much light a sample absorbs or lets through.
例文
The laboratory uses a spectrophotometer for chemical analysis.
研究所は化学分析に分光光度計を使用する。
Spectrophotometer readings help determine solution concentrations.
分光光度計の読み取りは溶液の濃度を決定するのに役立つ。
The spectrophotometer must be calibrated regularly.
分光光度計は定期的に校正する必要がある。
spectrophotometer の語源・成り立ち Etymology
spectro- はラテン語 specere「見る」由来の spectrum、photo- はギリシャ語 phos「光」、-meter はギリシャ語 metron「測るもの」です。関連語に spectator, photograph があり、「光のスペクトルを見て測る装置」と考えると分光光度計の意味がつかめます。
This word was built from three classical parts: `spectro-` from Latin *spectrum*, linked to *specere* "to look," `photo-` from Greek *phos* "light," and `-meter` from Greek *metron* "measure." The idea is "an instrument for measuring light by looking at its spectrum." Related English words include *spectator*, *spectrum*, and *photograph*.
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