kelvin invented the standard unit of measuring temperature.
kelvin invented the standard unit of measuring temperature.
who invented the standard unit of measuring temperature?
kelvin
thomson did more than any other electrician up to his time in introducing accurate methods and apparatus for measuring electricity. as early as 1845 he pointed out that the experimental results of william snow harris were in accordance with the laws of coulomb. in the "memoirs of the roman academy of sciences" for 1857 he published a description of his new divided ring electrometer, based on the old electroscope of johann gottlieb friedrich von bohnenberger and he introduced a chain or series of effective instruments, including the quadrant electrometer, which cover the entire field of electrostatic measurement. he invented the current balance, also known as the "kelvin balance" or "ampere balance" ("sic"), for the precise specification of the ampere, the standard unit of electric current. from around 1880 he was aided by the electrical engineer magnus maclean frse in his electrical experiments.
william thomson, 1st baron kelvin
many methods have been developed for measuring temperature. most of these rely on measuring some physical property of a working material that varies with temperature. one of the most common devices for measuring temperature is the glass thermometer. this consists of a glass tube filled with mercury or some other liquid, which acts as the working fluid. temperature increase causes the fluid to expand, so the temperature can be determined by measuring the volume of the fluid. such thermometers are usually calibrated so that one can read the temperature simply by observing the level of the fluid in the thermometer. another type of thermometer that is not really used much in practice, but is important from a theoretical standpoint, is the gas thermometer.
temperature measurement