Explore: Thermometers And Thermometry

Galileo thermometer to thermal imaging. Medical thermometers such as mercury-in-glass thermometers, infrared thermometers, pill thermometers, and liquid

through the mouth). The precise history of rectal thermometry is largely unknown, but medical thermometers have long been made in a tube shape that fits into

less of a problem with fast-reacting digital thermometers, but is certainly an issue with mercury thermometers, which take several minutes to stabilise their

first sealed thermometer was constructed in 1654 by the Grand Duke of Tuscany, Ferdinand II. The development of today's thermometers and temperature scales

mercury thermometers. By 1717, he was making them commercially. The superiority of his mercury thermometers over alcohol-based thermometers made them

first successful mercury-in-glass thermometers, which were more accurate than the spirit-filled thermometers of his time and of a generally superior design

They are sometimes called laser thermometers as a laser is used to help aim the thermometer, or non-contact thermometers or temperature guns, to describe

known temperature values. This works on the same principle as mercury thermometers. If a change in volume can be measured with one standard known temperature

different thermometer designs are required to cover the entire range. These include helium vapor pressure thermometers, helium gas thermometers, standard

the 19th century, the scientific and thermometry communities worldwide have used the phrase "centigrade scale" and temperatures were often reported simply