Who invented doctors thermometer

Gabriel Fahrenheit was the first person to make a thermometer using mercury. The more predictable expansion of mercury combined with improved glass working techniques led to a much more accurate thermometer. Fahrenheit used the newly discovered fixed points to devise the first standard temperature scale for his thermometer.

Fahrenheit divided the freezing and boiling points of water into degrees. It is sometimes suggested that Fahrenheit divided his scale into degrees using blood temperature incorrectly measured and the freezing point of water as fixed points — this is not true. The Fahrenheit scale is still in use today.

In a Swedish scientist named Anders Celsius devised a thermometer scale dividing the freezing and boiling points of water into degrees. Celsius chose 0 degrees for the boiling point of water, and degrees for the freezing point. In Sir William Thomson, Baron Kelvin of Largs, Lord Kelvin of Scotland — proposed the absolute temperature scale with zero degrees being the theoretical lowest temperature possible where molecular motion ceases. Kelvin defined 1 Kelvin degree as being equal to one Celsius.

Since it has been known simply as the kelvin K. Are you looking for any product in particular? We offer a vast array of thermometers for different temperature measurement across all sectors and a multitude of applications. In , another Italian inventor, Santorio Santorio, used a numerical scale on the thermoscope but it was very rudimentary. The more modern thermometer was invented in by Daniel Fahrenheit. It was an enclosed glass tube that had a numerical scale, called the Fahrenheit scale.

The early version of this thermometer contained alcohol and in Fahrenheit developed a mercury thermometer using the same scale. He assigned the freezing point of water at 32 degrees, the boiling point of water as degrees and the normal body temperature as Who had discovered oxygen? Who had given the phenomena of Blood Circulation? Who had given the theory of Plate tectonics? Who had invented zero? Who introduced metric system? Search Go! The content on R4R.