Question

What is Mercury thermometer

Answer 1

Answer:

thermometer consisting of mercury contained in a bulb at the bottom of a graduated sealed glass capillary tube marked in degrees Celsius or Fahrenheit; mercury expands with a rise in temperature causing a thin thread of mercury to rise in the tube.

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Answer 2

Mercury Thermometers:

• In 1714, Gabriel Fahrenheit invented  the first mercury thermometer.

Mercury is used in thermometers because of following reasons :

• Mercury remains in a liquid state  for a wide range of temperatures. It freezes  at -38.87 degree celsius and boils only at 356.58 degree celsius.
• It is relatively easy to see because  its silvery grey colour.
• It does not stick to glass.
• It is fairly uniform rate of expansion for a wide range of temperatures.