Thermometer Development
The first one thermometer
The first thermometer Galileo invented in the 16th century.
But it was not until 300 years after the
design easy to use, reliable thermometer.
Mercury stored in the end of the mercury ball.
When the...
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Thermometer Development
The first one thermometer
The first thermometer Galileo invented in the 16th century.
But it was not until 300 years after the
design easy to use, reliable thermometer.
Mercury stored in the end of the mercury ball.
When the
mercury is heated, it will swell and rise along a very narrow glass tube.
Therefore, small changes
in body temperature will lead to a substantial increase of the mercury inside the glass tube.
The
amount of finished body temperature of not swinging the thermometer, the mercury back to the
mercury ball.
1714 -1988
In 1714, Gabriel Fahrenheit developed the mercury thermometer scale set in the freezing point of
water and human body temperature range.
A Dutch doctors use it to patients with fever in body
temperature, but the thermometer is still too large, most doctors can not use it soon.
In 1868, Wen Deli Xi the German professor published a book of the disease and body temperature
", the book has recorded 25,000 cases of the patient s
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