A Water Thermometer is one which is filled with water instead of mercury, for ascertaining the precise temperature at which water attains its maximum density. This is about 39 (deg) Fahr., or 4(deg) Centigrade and from that point down to 32 (deg) Fahr., or 0(deg) Centigrade, or the freezing point, it expands. The most common use of a water thermometer today is testing the temperature of water in the home. One practical application is especially important for new parents as they use it to test the temperature of bath water to ensure that an infant is not accidentally subjected to a scalding bath. Along with checking the bath water, the thermometer can also be used to maintain a check on the temperature of the water in the household water heater.
History of the Invention
The first Water Thermometer was created during the 16th century. In the year 1593, Galileo Galilei made a better Thermometer which was basically a water thermometer. This newer version was the first type of thermometer to allow variations in temperature. Galileo found that, if he used liquid that was less dense than water, he could suspend those liquids in a vial of water, which would rise as the temperature increased. Galileo was able to take the information he discovered and developed a model of a thermoscope (earlier name of Thermometer) that used fine droplets of alcohol. These droplets maintained their cohesion in the water and would rise to the top as the temperature of the water slowly increased.
Development in the Invention of Water Thermometer
Role of Water Thermometer in the development of Human Life