9.Mercury is used in digital thermometer
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Digital thermometers use a non-toxic alcohol instead of mercury to register the temperature. Explanation: Like liquid mercury, the alcohol expands in volume as it gets warmer, causing the liquid to move up the thin tube inside the glass thermometer. Digital thermometers contain a device called a thermoresistor. .. .............
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Newer technologies include non-mercury liquids-in-glass as well as digital and electronic devices that use sensors to measure temperature. Thermometers that check body temperature in the ear, across the forehead, or have a digital display do not contain mercury. ... The most concerning are mercury-containing thermometers.
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