Strip thermometer. Boy using a strip thermometer to measure his temperature from his forehead. His temperature is displayed by the green area, which i
Strip thermometer. Boy using a strip thermometer to measure his temperature from his forehead. His temperature is displayed by the green area, which in this case shows 38 degrees Celsius. This indicates that he has a slight fever: normal body temperature is a degree lower than this. The cells in the strip each contain liquid crystals in a tight helix. The crystals are designed so that they expand and begin to reflect light at a specific activation temperature. Each cell's crystals have a slightly different activation temperature. Fevers can be reduced with drugs, but most are short-lived and harmless. Skin thermometers are less accurate than mercury or digital types.
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Photo credit: © ANDREW LAMBERT PHOTOGRAPHY/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: boy, care, checking, child, colour, colours, crystal, crystals, diagnosing, diagnosis, fever, forehead, healthcare, ill, lcd, liquid, male, measurement, measuring, medical, medicine, patient, sick, strip, thermochromic, thermometer, unwell, young
