The terms in bold link to topics in the AQA, Edexcel, OCR, WJEC and CCEA A-level specifications, as well as the IB, Pre-U and SQA exam specifications.
A thermometer uses a property that varies with temperature and measures its change. The thermal expansion of liquids, superposition of waves reflected from liquid crystals, thermistors with a negative temperature coefficient of resistance and the thermoelectric effect, are all exploited in clinical thermometers.
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