You searched for: “thermometer
thermometer
An instrument for measuring temperature, especially one having a graduated glass tube with a bulb containing a liquid, typically mercury or colored alcohol, that expands and rises in the tube as the temperature increases.

In general, substances expand slightly when heated, and shrink when cooled. This fact gave mankind its first tool for measuring temperature accurately; that is, the mercury thermometer. Thermometer comes from the Greek words therm, "heat" and metron, "measure"; so, it is an instrument "to measure heat".

This entry is located in the following unit: Centigrade (page 1)
(historical perspectives of thermoscopes to thermometers: Daniel Fahrenheit, Galileo Galilei, Anders Celsius, and Lord Kelvin; among others, were major contributors to temperature calculations as we know them today)
Word Entries containing the term: “thermometer
Thermometer and Temperature Scales
Historical perspectives of thermoscopes to thermometers.
This entry is located in the following unit: Words at Work in the Print Media: INDEX (page 1)
Thermometer and Temperature Scales
The historical background of Thermometer and Temperature Scales.
This entry is located in the following unit: Index of Scientific and Technological Topics (page 2)