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THERMAL PROPERTIES

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THERMAL PROPERTIES OF METER 


The crocus flower is a natural thermometer. It opens when the temperature is precisely 23 degree centigrade and closes when the temperature drops.






Liquid in Glass Thermometer Construction:

A liquid in glass thermometer has a bulb whit a log capillary tube of uniform and fine bore.

PRINCIPLE    

Liquid in glass thermometer is made on he principle of expansion of heating.

      A suitable liquid is filed in the bulb. When  we touch the bulb with a hot body, the liquid in it expands and rises in the tube. the glass stem of a thermometer is thick and acts as a cylindrical lens. This makes it easy to see the liquid lever in the glass tube.


THE MERCURY IN GLASS THERMOMETERS\

Mercury freezes at -39 degree centigrade and boils at 357 degree centigrade.
Mercury has all the thermometer properties. So mercury is one of the most suitable thermometer materials. Murcury in glass thermometer are widely used in laboratories, clinic and house to measure tempertatures in the range from -10 to 150 degree centigrade.  
Location: Pakistan

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